The MyoQuip Blog - rugby & strength sports, variable resistance strength equipment

A glimpse of rugby's future - physical imposition by big, fast backs.

2009-12-01T16:11:00.002+11:00

The Marseille game between France and the All Blacks was a wonderful display of purposeful ball-in-hand rugby and a clear demonstration of the importance of physical dominance in the backs. There was limited but very judicious kicking and a notable absence of the cut-out pass. Players on both sides were prepared to engage tacklers before off-loading.

In the backs the French were outweighed by nearly 7kg per man, putting them at a serious disadvantage in what developed into an intense, fast-paced physical contest. After 20 minutes France led 9-7 courtesy of three penalty goals; however in the final 20 minutes France failed to score while the All Blacks ran in two tries against a very weary defence.

Former Wallaby coach Bob Dwyer enthused: "New Zealand is now playing the style of rugby that I love. It is ambitious, confident and accurate in its execution - shorter passes, straight running, finding opportunity on the outside or, when closed off, picking up a support player on the 'natural loop'. Beautiful in its simplicity and effective in its outcome!"

Dwyer pointed out that the All Blacks had exposed the French through the channel between the half and five-eighth, noting that for opportunities to open up out wide, it was important to occasionally threaten, or appear to threaten, through this channel. Significantly, the All Black half, Jimmy Cowan, outweighed his counterpart, Julien Dupuy, by 14kg, while Dan Carter had a 9kg advantage over François Trinh-Duc.

Dwyer rates inside centre Ma'a Nonu as the most improved player in world rugby. While retaining his 'crash and bash' approach he "has added finesse and a real appreciation of the ways to 'fix' defenders and is now a far more difficult proposition altogether." The heaviest back on the field at 104kg, Nonu outweighed Yannick Jauzion by 9kg.

New Zealand, the traditional home of the 'two five-eighths game', has now developed an outstanding backline which features a big, powerful direct-running 12. The players outside Nonu; Conrad Smith, Sitiveni Sivivatu, Cory Jane and Mils Muliaina are all committed to bending or breaking the defensive line when appropriate as well as exploiting defensive gaps. The players also consistently and enthusiastically back one another up.

I am convinced that this Kiwi backline is a forerunner of what will become increasingly common in the next few years. Modern training methods are producing a new generation of seriously big, powerful and quick players. The most effective way of exploiting their comparative advantage is to play a very direct ball-in-hand attack coupled with brick wall defence and to maintain this pattern over the full 80 minutes. Smaller and weaker opponents may be able to withstand this type of pressure for long periods but eventually physical and mental fatigue will cause them to yield.

There will always be a place in rugby for the very skillful smaller player like Matt Giteau, but loading up backlines with physically inferior so-called playmakers, particularly if they are tackle-shy, is not the way forward.

Wallabies' illegal scrum tactics against Scotland

2009-11-22T06:49:00.000+11:00

A great gutsy win against the odds to Scotland.

One very blatant tactic adopted by the Australian scrum was to prematurely wheel on Scotland's feeds.

Law 20.1 (k) states:

Stationary and parallel. Until the ball leaves the scrum half’s hands, the scrum must be stationary and the middle line must be parallel to the goal lines.

The Australian pack was systematically shifting left meaning they were neither stationary nor parallel before the ball was put into the scrum. That this was a deliberate tactic was made obvious by the fact that the Wallabies stayed square whenever the referee moved to the non-feed side of the scrum.

Nine-a-side rugby – a game for boofy blokes

2009-11-17T19:40:00.000+11:00

For many rugby aficionados the sevens version of the game is deeply unsatisfying; a skim milk, decaffeinated, lukewarm concoction. At the same time there are aspects of the fifteen-a-side game that currently make it a very boring spectacle; in particular the time wasting and over-emphasis on kicking.

What I want to propose is a shortened form of the game designed for knockout carnivals which would retain most of the elements that make rugby so distinctive. There would be strong emphasis on physical engagement and the scoring of tries.

Essential elements of nines rugby

The Laws of the Game would apply to the nine-a-side game, subject to the following variations:

Playing field The field of play is narrowed from not more than 70 metres to not more than 40 metres. There is no need for goal posts and crossbars.

Player numbers At any time each team has no more than nine players on the field. Teams also have to have at least two replacements/substitutes suitably trained and experienced to play in the front row. The total number of replacements/substitutes nominated cannot exceed five of whom only three can be used in a match.

Method of scoring Tries are the only method of scoring.

Duration of matches A match consists of two halves of not more than ten minutes playing time plus lost time and extra time. However, the two halves of a competition final match may last no longer than fifteen minutes plus lost time and extra time. There will be an interval of not more than one minute at half-time, or two minutes during a competition final.

When scores are tied at full-time, extra time is played in periods of five minutes. After each period, the teams change ends without an interval. In extra time, the team that scores points first is immediately declared the winner, without any further play.

Replacement of front row players If a front row forward leaves the field and the team cannot provide a suitably trained replacement, a penalty try will be awarded against the team and the match will be continued with three-man scrums.

If the referee has signalled for a scrum to take place and a front row forward is unable to take part in the scrum without delay the referee may require that that player be temporarily replaced.

Foul play Temporary suspension of a player will be for a period of three minutes.

Mark Marks may be claimed anywhere within the field of play or in the team’s own in-goal.

Throw-in When a player anywhere in the field of play kicks directly into touch other than from a penalty, there is no gain in ground.

Five-man scrum A scrum must have five players from each team.

Lineout The player throwing the ball into the lineout shall have a maximum of twenty seconds from when the lineout begins to form to throw the ball in.

With these variations to the Laws we would have a game which is played with minimum time wasting and delays. Features which make rugby so distinctive, namely serious scrums, lineouts, rucks and mauls, are retained. And importantly the only method of winning games is to score tries.

The amount of kicking would be reduced, firstly because teams gain no advantage from kicking out on the full from their own 22, and secondly the use of the up-and-under is largely negated by the defending side being able to claim a mark anywhere on the field. At the same time teams would continue to be rewarded for accurate kicking where the ball bounces in the field of play before going into touch.

Narrowing the field of play is appropriate because the number of backline players is effectively reduced from seven to four.

Reduction in player numbers is likely to be of benefit to the fifteen-a-side game because players will have to focus on correct technique at the breakdown with referees having a much clearer view of what is going on. Spectators and viewers will also be better able to see the intricacies of scrums, lineouts and breakdown contests, which may have the effect of winning new supporters for the code.

Nine-a-side rugby will be a fast-moving, physically demanding and entertaining form of rugby which is complementary to sevens but likely to appeal to a different player and supporter base.

Too old at 30 - Australian rugby's "scrapheap" policy

2009-11-12T18:32:00.000+11:00

The Australian rugby coach and his selectors appear to be following a quite deliberate policy of favouring emerging players over those with significant international playing experience. One consequence of this is that the Australian Super 14 franchises are being denuded of senior players who traditionally mentor and guide those who are just learning their craft.

In the Test against Ireland, the Wallabies do not have a single player aged 30 or more in their starting fifteen. Their opponents have eight, a majority of the team! The average age of our 22-man squad is 25.2 years; theirs is 27.5. Our oldest starter is 28.

Consider the average age of the most recent teams of the top ten rugby countries, i.e., Tri-Nations, Six Nations plus Argentina. Every other side's players are more than a year older than the Wallabies. And every other country has two or more starting players who are at least 30 years old.

Rugby is an unusually complex game. It takes players years to achieve real competency. And yet we are seeing a new generation of talented youngsters rushed from school into professional football and then on to the international level. A minority manage to establish themselves at the top, but I wonder whether even they achieve their full potential. In their development years they should be playing in an environment where they can dominate instead of one where they constantly struggle to survive.

Because of the centralised control of the sport by the ARU, the premature discarding of experienced players has extremely adverse impacts at the Super 14 levels and even down through the clubs. The central body dictates how much players can be paid by the franchises who are basically mendicants surviving on handouts from the centre. It is therefore only those players who are on ARU contracts who earn large incomes. Once taken off the national list players have little choice but to round out their careers in Europe or in the Bermuda Triangle of Japanese rugby.

The effect of this is that all their accumulated wisdom and experience is lost to their Super 14 teams and their clubs; basically to Australian rugby. And then people say that we don't have a large enough talent pool in Australia. The main way in which the great minds who control our sport have dealt with this problem is to buy in so-called rugby league marquee players who then spend years trying to master the fundamentals of our sport. How can young players benefit by playing with extravagantly paid blow-ins who know vastly less than they do?

It has been observed that rugby is basically war without the guns. When you're forced to slog it out in the trenches, who would you want with you? A grizzled battle-scarred veteran or an over-excited kid who believes all the hype and publicity generated about him. Small wonder that we can't string wins together.

Rugby's Age of the Low Skinfold Giants

2009-11-07T19:48:00.009+11:00

In 1991 England's international rugby forwards and backs weighed, on average, 100 kg and 83 kg respectively. Their counterparts in 2003 weighed 109 kg and 90 kg. (England Rugby Injury and Training Audit 2002-04)

By comparison in this year's Test against the Wallabies the England squad's average weight had further risen to 113.4 kg for the forwards and 93.4 kg for the backs. Thus in just 18 years elite level forwards had increased their weight by some 13 kg and the backs by 10 kg. And a much greater proportion of the bulk of the modern player is lean body mass.

Present day players are not just bigger, but also stronger and fitter and, certainly with the forwards, much quicker than those of the pre-professional era. Thus there is massively greater force being generated in the game's collisions, even without taken account of the modern two-on-one techniques of tackling. Little wonder then that the coaches' preferred teams have been decimated by injury from both playing and training.

For this Test the Wallaby forwards were outweighed by about one kg per man and the backs by two kg. But there was a very significant weight discrepancy in the front row. England's engine room five averaged a massive 119 kg while their opponents were a relatively puny 114 kg.

One of the greatest differences between the squads was in the players' ages. Ten of the home team's squad of 22 were aged 29 or older. By contrast the Australians, who seem to be taking the view that anyone over 30 is ready for the Golden Oldies, had just three.

There is a ten-year age gap between the ages of the reserve outside backs. Ayoola Enrile is 29 while James O'Connor is just 19. But this is inconsequential compared to the massive difference in their body weights. Enrile weighs 110 kg, a full 30 kg heavier than O'Connor!

Small wonder then that The Australian in late October attributed to Robbie Deans the view that "there could come a time when the Matt Giteaus, James O'Connors and Will Genias of the game simply find themselves too small to survive at the top level.”

The tackle-shy Bledisloe

2009-10-31T11:36:00.003+11:00

The Tokyo Bledisloe match featured the clash of two backlines who basically can't tackle to save themselves. Both the Wallabies and All Blacks backs fall off one in four tackles they attempt.

Let's look at the Wallabies first, using calculations derived from 2009 Super 14 stats compiled by Verusco Technologies. The first figure is the average number of tackles made per 80 minutes played, and the figure in brackets is the percentage of missed tackles:

Wallabies backs
Will Genia 7.5 (27.0)
Matt Giteau 10.0 (15.6)
Digby Ioane 7.3 (25.6)
Adam Ashley-Cooper 7.2 (25.0)
Ryan Cross 7.9 (19.0)
Peter Hynes 5.7 (19.5)
James O'Connor 8.5 (14.5)
Luke Burgess 9.7 (15.7)
Drew Mitchell 4.2 (33.3)
Quade Cooper 8.8 (42.0)
Average 7.7 (23.7)

All Blacks backs
Jimmy Cowan 6.3 (17.7)
Dan Carter - (-)
Sitiveni Sivivatu 5.4 (20.5)
Ma'a Nonu 8.7 (16.4)
Conrad Smith 8.5 (20.0)
Cory Jane 5.6 (21.7)
Mils Muliaina 4.2 (22.0)
Brendan Leonard 7.1 (27.6)
Stephen Donald 5.6 (40.0
Tamati Ellison 6.5 (25.6)
Average 6.4 (23.5)

And the situation gets worse with the rest of the injured and non-selected Wallabies backs:

Berrick Barnes 9.6 (25.7)
Kurtley Beale 7.5 (33.3)
Rob Horne 8.9 (29.2)
Richard Kingi 5.6 (33.3)
Stirling Mortlock 6.1 (38.0)
Tyrone Smith 8.6 (29.8)
Matt Toomua 9.1 (28.9)
Average 7.9 (31.2)

And the man who can't get a guernsey no matter how many players break down? Tom Carter averaged 12.7 tackles per 80 minutes and missed just 6.7%.

Scatter-gun or clustering―where is the logical location for Australian rugby’s fifth Super franchise?

2009-03-07T09:36:00.004+11:00

[Summary: In considering locations for a fifth Australian Super franchise, the Australian Rugby Union appears to be neglecting the option of basing it in the heartland of Australian rugby―the inner city suburbs of Sydney. Both the ARL and AFL have the majority of their clubs located in the city in which their game developed.

Given that this week’s SANZAR board meeting was held in Dubai one should not expect too much respect to be paid to location theory in determining the next site for expanding the Super 14 competition.

Australian Rugby Union supremo John O’Neill has justifiably argued strongly for the fifteenth franchise to be granted to Australia, but where should such a team be based? Perhaps an examination of the location of professional teams in other football codes in Australia might be illuminating.

The Australian Rugby League has sixteen Premiership clubs. Nine of these (56%) are located in Sydney; four (25%) in other traditional rugby league areas; and three (19%) in what might be classed as expansion areas, namely Melbourne, New Zealand and the Gold Coast.

The Australian Football League also has sixteen Premiership clubs. Nine of these (56%) are located in Melbourne; five (31%) in other traditional Australian Rules areas; and two (13%) in expansion areas, namely Sydney and Brisbane.

It can be seen that in both of the major codes with which rugby competes the majority of teams are located in the city in which their game developed. By contrast Australian rugby has just four professional teams; one in Sydney where the game has its Australian roots (25%); one in Brisbane, a traditional rugby area(25%); and two in expansion areas, namely Canberra and Perth(50%).

John O’Neill has been quoted as saying that in choosing a location for the additional team “the Gold Coast, Melbourne and West Sydney boasted the necessary prerequisites, while also mentioning Gosford and Newcastle.” Let’s look at the logic of these five sites.

Starting with Gosford, its main attraction would appear to be that it has an underutilised stadium, apparently constructed by John Singleton in “Field of Dreams” mode. Well he built it but they didn’t come. The area lacks critical population mass, is devoid of major corporations to provide sponsorship support, and lacks an underlying club competition of anything remotely like an appropriate standard.

Newcastle would also seem to be deficient in terms of population, business support and strength of its club competition. In fact, a Newcastle team competed in the Sydney Club Premiership competition for a few seasons in the late 1990s but folded due to lack of support from the Newcastle public.

Placing a team in Melbourne would create many of the same problems faced by the Western Force, namely being in a city where the overwhelming majority of the population have no interest in rugby and don’t really know the difference between rugby and rugby league, and not having an underpinning club competition of anywhere near acceptable standard.

Giving a franchise to the Gold Coast, an area that supports just one team in the Brisbane Premiership club competition, means that the South-East Queensland conurbation, essentially Greater Brisbane, would have two Super 15 clubs while Sydney would have only one. Giving their relative populations, strength of their club football competitions and business clout, this does not make sense.

So that just leaves West Sydney―or does it? John O’Neill has, if I recall correctly, mentioned both Blacktown and Parramatta as possible locations, but where is rugby’s heartland in Sydney? It has always been in the inner city suburbs, basically clustered around the harbour.

Of the last fifty Sydney First Grade Premierships, twenty-three have been won by Randwick and ten by Sydney University. If we then add in those won by other harbour-side clubs―Norths, Gordon, Manly and Easts―45 of the last 50 Premierships or 90% have been won by rugby-heartland clubs. Only five or 10% have been won by clubs which could be regarded as part of West Sydney―three by Eastwood and two by Parramatta.

In addition the great bulk of the wealthy private schools which have been the major nursery for Australian rugby players are located in the heartland suburbs.

Club rugby has always struggled in West Sydney, and even the club which has enjoyed success in recent years, Eastwood, is facing a financial crisis partly due to a rapidly changing demographic unfavourable to rugby.

If we had a central Sydney team in addition to the NSW Waratahs where would it play? The obvious answer is the Football Stadium. Very few professional football teams own their own grounds; it makes much better economic sense to hire an existing facility.

Would there be sufficient support to sustain two teams in the one city? Apart from the obvious examples from the ARL and the AFL, English cities such as Liverpool and Manchester, both much smaller than Sydney, have dual soccer clubs as well as numerous other clubs clustered nearby. The proximity of rivals seems to promote fierce tribalism and increased interest in the sport.

In discussing a new Australian franchise John O’Neill spoke about the possibility of a “’hybrid team’ including Pacific Islanders, Australia expats and league converts.” Ignoring the wisdom or otherwise of sourcing players in this way, why might there be a deficiency of professional standard rugby players in Australia? Precisely because there are so few opportunities for rugby players to ply their trade in their own country.

As mentioned above, there are sixteen fully professional clubs in both the ARL and the AFL. By contrast there are only four Australian Super 14 clubs. In broad terms this means that there are four times as many opportunities for rugby league and Australian football players to play professionally here as there are in rugby. Given time, the additional demand for players created by a fifth franchise will produce the necessary supply. That process will take much longer than it should because, with a few notable exceptions, player development has been grossly neglected by the administrators of rugby in Australia.

Daniel Vickerman rates MyoQuip strength machines as "absolutely fantastic"

2009-01-14T05:53:00.010+11:00

Dan Vickerman is recognised as one of the top lineout forwards in world rugby. Born in South Africa, he has the unusual distinction of having represented both South Africa and Australia at the Under-21 level. In 2002 he made his debut for the Wallabies against France, going on to make 55 Test appearances. He played Super Rugby with the ACT Brumbies from 2001 to 2003 and the NSW Waratahs from 2004 to 2008.

Having been forced to study online throughout his first degree, a Bachelor of Financial Planning through Open Universities Australia (RMIT), he responded to the opportunity to study at Cambridge by suspending his international rugby career to enjoy the luxury of full time study. He is now reading for a degree in Land Economy at Cambridge's Hughes Hall.

At 204cm, Dan's limb geometry is unsuited for exercises such as the squat. Not surprisingly he acknowledges that "I have suffered from back injuries in the past due to the nature of some exercises in the gym." In fact, a very high proportion of professional rugby forwards avoid squatting because of back problems.

Fortunately, for the past four seasons both in the Waratah's gym and at Camp Wallaby at Coff's Harbour, Vickerman has had access to the MyoQuip ScrumTruk which he describes as "an asset to me during my rugby career." Recently, when forced by injury to take a break from national representation after the Super 14 Final, he went back to his club, Sydney University, to undertake rehabilitation with strength and conditioning guru Martin Harland. At the Uni gym he made extensive use of both the ScrumTruk and the HipneeThrust lying leg press before setting off for Cambridge.

"For me the two machines, the ScrumTruk and the HipneeThrust, have been absolutely great," Vickerman says. "The use of these machines gives the ability to build strength without putting strain on one's lower back. As a forward the strength gained transfers well onto the field due to their practicality and specificity to what we do during the game."

(The Sydney University gymnasium has now replaced its ScrumTruk and HipneeThrust machines with the more advanced MyoTruk and MyoThrusta)

The essence of rugby

2009-01-05T21:35:00.002+11:00

Rugby football is a game I can't claim absolutely to understand in all its niceties, if you know what I mean. I can follow the broad, general principles, of course. I mean to say, I know that the main scheme is to work the ball down the field somehow and deposit it over the line at the other end, and that, in order to squelch this programme, each side is allowed a certain amount of assault and battery and do things to its fellow-man which, if done elsewhere, would result in fourteen days without the option, coupled with some strong remarks from the Bench.

P.G. Wodehouse, Very Good, Jeeves, 1930

Rugby scrum mechanics, technique and strength training: links to articles

2009-01-02T16:51:00.004+11:00

[Summary: Here is a collection of links to articles, posts and web pages about rugby scrum technique and strength training. Arranged alphabetically by title, each of them conforms to the commons principle by being freely available for viewing without payment and by not being password-protected.]

"Andy Sheridan - an aberration or is prodigious strength the future of rugby?" Bruce Ross
"[Andy Sheridan's] example suggests that players with appropriate genetic endowment can achieve massive strength specific to the demands of their sport through the long term application of strength training techniques. However, in order to do so, these players currently have to almost defy the rugby world's orthodoxy in relation to strength and conditioning."
MyoQuip Blog

"Assessment of scrummaging performance" Stuart Mills and Paul Robinson
"with the new era of professional rugby and an increased scientific approach, rugby clubs should evaluate the validity of the physical tests they currently use and consider adopting rugby specific tests that measure scrummaging performance directly. This would increase confidence in the validity of the test data and result in the real weaknesses being addressed, thereby improving the preparation of players for competition."
Coaches' Infoservice

"The attacking scrum" Angus Baker
"the scrum, if applied correctly, becomes an essential attacking platform to the modern game and maximises attacking options."
www.rugby.com.au

"Body height in the rugby scrum: the value of equal hip and knee joint angles" Bruce Ross
"an optimal configuration of body position and limb alignment on engagement involves hip and knee angles each set at 90° with both trunk and shank being parallel to the ground. During the scrum, hip and knee joints should move synchronously so that their angles remain equal."
www.myoquip.com.au

"Building the scrum" Graham Smith
"A dominant scrummage ... not only provides your team with excellent possession, but it is also a vehicle which can exhaust the opposition pack, and demotify and dispirit the opposition backs, for they will always be on the back foot, always under pressure."
www.coachingrugby.com

"The guru and the scrum
"No foot in the scrum should move from its starting position. The way your feet are before you actually engage is the way they must stay so you do not get a destabilised scrum as players try to readjust their feet."
Rugby365.com

"Introducing the ScrumTruk rugby strength builder" Bruce Ross
"In exercising with ScrumTruk, the lower spine adopts moderate curvature necessary for effective pushing and avoidance of lower back strain. This
position also triggers isometric contraction of the stabilising muscles of the pelvic and abdominal regions."
MyoQuip Blog

"The mechanics of the scrum and implications for the role of the tight head prop, right lock and right flanker." David Docherty
"An important aspect of scrummaging is understanding the way in which the scrum will tend to move or wheel and how it can used to advantage or needs to be resisted."
Eastern Rockies Rugby Football Union

"Prop-specific strength training at the shove" Conrad Comer
"It cannot be over-stressed how important it is for players in such a vulnerable position to train through the full range of movement."
www.community-rugby.com

"Scrum mechanics, technique and problem solving - or, helping the 'girls' understand the 'dark arts.'" Mark Calverley
"In this article I am ... trying to apply mechanics to the scrum, but without using biomechanics jargon."
www.community-rugby.com

"Scrums - have we got it right?" Andrew Beattie
"about 8.3 minutes of a game of Rugby Union is devoted to scrums."
www.rugby.com.au

"Static neck stretches"
"simple exercises ... will develop the neck muscles and help against the chance of doing irreparable damage during a game or training."
www.nswrugby.com.au

"The scrum" Martin Hynes
"Squat weight-lifting principles are very important in scrummaging and a player's basic technique can be checked in weight training ... or simply by getting the player to hold a stick across his shoulders so that he can demonstrate his squat style/technique."
www.community-rugby.com
www.nswrugby.com.au

"The Scrum" Matt Ryan
"it is my belief that you should not be coaching Rugby Union unless you can coach a safe scrum collapse procedure. This is an extremely dangerous part of the game."
Singapore Rugby Union Technical Director

"Tight five
scrummaging - it's all about body shape" Mark Bell
"This discussion paper will address the role of the tight five and identify how good body shape and correct scrummaging can significantly reduce the fatigue caused to players by scrummaging."
www.rugby.com.au

"Total impact method: a variation on engagement technique in the rugby scrum" Doug McClymont
"The principle of conservation of momentum ensures that the pack that is moving faster at impact will apply a greater force, and that pack will tend
to maintain its position rather than being moved back."
Coaches' Infoservice

I would be grateful for any suggestions of other articles that could be added to this list or for any comments on any of the articles.

Strong glutes for the 'horsepower' factor

2008-12-26T17:23:00.008+11:00

Kelly Baggett is an Arizona-based "performance consultant" who specialises in "increasing raw explosiveness, acceleration and jumping ability." In an article on his site Higher-Faster-Sports.com titled "The plague of the mediocre athlete; no glutes equals no results," he claims that the main difference between average and good athletes is in "the functionality of the feet, as well as the strength, development, and function of the glute musculature."

Baggett argues that the glutes are mainly responsible for the 'horsepower' factor and does not believe that an athlete can have too much glute strength. He maintains that "due to their natural strength and the leverage advantage they have over your legs, the glutes should always be the primary muscles that drive lower body movement.

Inhibited glutes and overshadowed glutes

In extreme cases the glutes may be inhibited to the extent that they don't contract when walking, standing or even playing sport, but the more common problem for the athlete is having "overshadowed glutes":

Here the glutes DO fire correctly, but are not as strong as other lower body muscles (like the quadriceps), thus the body will use other muscles to do what the glutes SHOULD be doing, resulting in inefficient
performance and often some type of pain or injury over the long haul. Whenever you perform a movement such as a squat, lunge, deadlift, jump, sprint, or any exercise that involves several different muscle groups, the majority of work will tend to be done by the strongest of those muscle groups.

People who don't have superior glute activation patterns and whose glutes are not naturally stronger than their thighs perform exercises in the weightroom that should be strengthening their glutes but typically end up with most of the strengthening occurring in the thigh muscles. Then "when you throw them into an athletic environment the body will naturally use the strongest muscles to control movements, so now their quads and other muscles will want to do what the glutes should be doing." People who tend to easily develop massive quadriceps are usually not very impressive athletically:

A person with overly developed quadriceps and lack of hamstring and glute development will tend to be a heel to toe runner and have trouble gliding, planting, and getting off on the balls of their feet. ... Even if the posterior chain is developed, in someone that has massive quadricep development, they will still struggle with ideal movement patterns because their body will try to do things that favor the stronger muscle groups.

Extensor dominant movement for speed

In another article, "Squats and speed development?" Baggett suggests that blazing speed derives from "extensor dominant movement." He advises:

for speed development you get away from focusing on exercises where you "bend your knees" and focus on exercises where you extend your hips. So, get away from squatting and focus on extending, where the focus is high RPM strength, which I truly believe a person can never have enough of. That means everything on the backside of your body becomes more important.

Hip-joint-specific strength apparatus

MyoQuip's latest release, the MyoHip, provides a biomechanically efficient means of exercising and strengthening the hip extensors - glutes and hamstrings - without activating the knee extensors. In addition it is very effective in strengthening and enhancing the functionality of the hip flexors, which are the antagonists of the hip extensors.

World champion rower uses the MyoThrusta and MyoTruk for strength training

2008-12-21T22:54:00.005+11:00

Dual world champion sculler Bronwen Watson has been making extensive use of the MyoThrusta and MyoTruk machines installed at Sydney University's athletes' gymnasium. Watson who won gold in the Lightweight Women's Quad Scull at the 2007 World Rowing Championships at Munich, Germany repeated the achievement at the 2008 Championships at Linz Ottensheim, Austria.

She had 'retired' from rowing after winning bronze at the 2003 World Championships, then took it up again socially in England in 2005 before coming back to Australia to take up a Head Coaching position as a Sydney girls' school, but "I found sitting in the speed boat a really frustrating way to be on the water so started doing a bit of paddling. Before I knew it I was spending more time in lycra and training 6 days a week!"

Now aged 31, she intends to continue rowing for a few more years:

Rowing is a sport where you are continually trying to find the perfect stroke and the perfect mental approach - which all takes time and a lot of determination. I guess that's part of the reason some of the great rowing athletes have endured for so many years - it's a sport of patience and perseverance. So, even though I have been around for a while and developed a good base, I still think I have a lot to improve on!

Rowing training is particularly gruelling, with long sessions on the water supplemented by hour-long ergometer rows, heavy gym training and bike rides that extend for hours. Lower lumbar injuries are an extremely common problem for elite rowers, making it difficult to continue doing the traditional lower limb multi-joint extensor exercises such as the squat and deadlift. Having access to equipment that creates maximum tension in glutes and quads without appreciable spinal loading is a huge benefit.

During the second half of 2008 Bronwen had commenced a new career, working as Executive Assistant to Sydney Uni Sport & Fitness Executive Director, Rob Smithies, but the move was short-lived when she was given the opportunity to take up a full-time scholarship at the Australian Institute of Sport.

Announcing the MyoHip - the ultimate hip joint strength machine from MyoQuip

2008-12-20T16:36:00.006+11:00

At last! A single simple-to-operate apparatus that effectively develops the all-important muscles of the body's great hinge mechanism - the hip joint - in both opening and closing; extending and flexing.

Despite its critical importance for human motion and posture, the hip joint has been basically neglected in terms of specific exercises and apparatus to improve its strength and functioning.

The primary hip extensor, the gluteus maximus, is the largest muscle in the human body. Very coarse in texture, it is heavily endowed with fast-twitch fibres. As a result it plays a central role in sports which involve sprinting and jumping. Conventional methods of strenthening and developing the glutes such as the barbell squat simultaneously activate the knee extensors or quadriceps. As a result optimal development of this vital muscle group is rarely achieved.

The MyoHip is unique as it is an accommodating or variable resistance machine which isolates the glutes and its synergistic muscles. Therefore the exerciser can focus on developing that muscle group. The possible range of movement for the exerciser on the MyoHip is 45° either side of the vertical, meaning that the included angle of the hip joint can extend from 45° to 135°, sufficient to ensure strong muscle activation.

The sequence below shows the apparatus being used in extension mode with the exerciser's back to the roller pads:

With modern sedentary lifestyles and the general aversion to walking anywhere, it is not surprising that many people have tight hip flexors which do not function effectively.

In order to use the MyoHip to develop and strengthen the hip flexors the exerciser simply changes their seating position to face the roller pads. The handgrips can be used if the pressure of the roller pads on the chest is uncomfortable. As in extension mode the exercise range can extend from 45° to 135° included angle of the hip joint.

In both extension and flexion modes the variable resistance mechanism compensates for gravitational attraction on the user's upper body. At the start of either movement the user has to overcome the effect of gravity on their trunk and head, while at the finish gravity makes it easier to push the roller pads. Therefore the machine's resistance is configured to become progressively greater throughout the exercise movement.

The sequence below shows the apparatus being used in flexion mode with the exerciser facing the roller pads:

Strengthening and developing the human body's great hinge, the hip joint

The MyoHip is an important addition to the exerciser's arsenal of strength-building equipment. For too long the muscles of the hip joint have been largely ignored. To some extent this could be because most exercises were originally developed and popularised by body builders whose desired body shape does not include large buttocks. They also have little interest in the hip flexor muscles since they are deep-seated and not visible.

However, for a large range of sports the hip extensors and flexors are vital. These include those sports where sprinting or jumping is involved and also rowing where the trunk swing is a major contributor to the power of the rowing stroke

Even more importantly a large proportion of the population experiences hip joint dysfunction. The MyoHip offers a very convenient and effective way to avoid these problems or to undertake rehabilitation.

Contact MyoQuip for further information or to obtain a quotation on the MyoHip. If you are located outside Australia we can quote in your own currency with alternative shipment options.

BBC (Broad Biomechanical Correspondence) Technology - the effect of varying pin settings on the operation of MyoQuip machines

2008-11-28T08:08:00.007+11:00

MyoQuip's BBC Technology is designed as a compensation mechanism for biomechanical disadvantage. When a limb is fully flexed, i.e., the foot or hand is close to the trunk, the muscles of that limb are operating in a position of considerable biomechanical disadvantage, but as the limb extends away from the trunk it moves into a progressively more biomechanically efficient orientation.

An example of this changing biomechanical efficiency can be seen with the barbell squat. When the hip and knee joints are flexed as in the deep position of the squat, the lifter's capacity to cope with resistance is considerably reduced; but as they rise and the joints fully extend, the amount of resistance that can be coped with increases dramatically. This is why there is a very strong tendency for unsupervised and inexperienced lifters to perform only partial squats and why the squat does not effectively work the leg extensor muscles through their full range.

MyoQuip's machines such as the MyoThrusta and the MyoTruk use Broad Biomechanical Correspondence Technology to provide increasing resistance throughout the exercise movement. This enables the exerciser to operate comfortably and effectively in the region of biomechanical disadvantage. In addition the technology exposes them to substantial effective loading and high-range muscle fibre recruitment throughout the whole range of movement.

BBC technology is an easily adjustable form of accommodating resistance. The rate at which the effective resistance changes is varied by selecting different pin positions on the machine's adjustment bar.

Mid-range pin settings

These are designed to broadly compensate for the improvement in biomechanical advantage throughout the exercise movement. The increase in effective load from the start of the movement to full lockout is intended to match the body's capacity to handle resistance, so that the exerciser has to expend basically the same degree of effort throughout the movement; in other words to provide broad biomechanical correspondence between the exerciser's load-bearing capacity and the effective load. This can be contrasted with the barbell squat where considerable effort is required at the bottom of the movement and very little at the top end.

Thus with a mid-range pin setting on apparatus such as the MyoThrusta the leg extensor muscles experience substantial activation throughout the whole range of movement.

Low-range pin settings

Here the increase in effective load from start to finish of the exercise movement is greatly increased. These notch settings are ideal for practising explosive or ballistic movements. The exerciser chooses a weight load they can comfortably handle at the start of the movement and then attempts to perform the concentric part of the exercise as rapidly as possible. However, as they move toward full leg extension the effective load is rapidly increasing thus slowing their momentum. As a result there is a "ballistic braking" effect toward the end of the movement, eliminating the need to decelerate. Because of this the exerciser can utilise explosive strength over the full range of the movement.

This range of settings is particularly useful with the MyoThrusta where concentration on plyometric-type movements can be expected to produce significant improvements in vertical leap.

High-range pin settings

The increase in effective load from start to finish of the exercise movement is greatly reduced. High pin settings are ideal when the focus is on overcoming inertia, i.e., moving a heavy load from a position of rest. A typical real world application is in rugby when there is the need to "shunt" the opposing pack. A similar situation applies in the rugby lineout when a lifter with poor vertical jumping ability has to be rapidly hoisted.

High-range pin settings are also useful when the MyoTruk or MyoThrusta is being used to improve performance in the barbell squat, because the additional loading at the start of the movement conditions the leg extensors to operate more effectively in the region of greatest biomechanical disadvantage, e.g., in the deep squat position.

Benn Robinson popping Phil Vickery in the scrum

2008-11-20T14:45:00.004+11:00

I know it's impolite to gloat and tempting the fates for an Australian to boast about Wallaby scrummaging but the Green and Gold Rugby blog site has the most extraordinary footage of the Wallabies tearing apart the English pack and in particular Benn Robinson turning Phil Vickery inside out. The sequence cycles endlessly in the post, Robinson smashes Vickery showing very clearly the delivery of force from the players behind the dominant prop.

It is the most wonderful feeling when you are the 'popper' and both humiliating and often frightening when you are the 'poppee'. I don't know whether that's a word but it is now.

At last! A dominant Wallaby scrum

2008-11-18T08:28:00.003+11:00

Aussie aficionados of trench-warfare rugby will enjoy the video, "Wallabies scrums from Twickenham video highlights" posted on Green and Gold Rugby - THE Aussie Rugby Blog.

It's been a long time between drinks for the Aussie engine room, and great to see them vindicated after the bagging they copped pre-game from the English press and frontrowers. Considering the improved scrummaging on this tour, perhaps the fact that the Wallabies and all four Australian Super 14 franchises use the ScrumTruk is beginning to pay dividends.

Still one egg doesn't make an omelette, and the Green and Golds have to show they can do it again against the French this weekend. I am not sure that the English front row, Andy Sheridan in particular, are going to be in too good a shape to back up again against the Springboks.

Fast-tracking the development of young rugby players in the four "esses" - size, strength, speed and skill

2008-11-05T22:29:00.011+11:00

A two-year program of accelerating the physical and skill development of young players at Sydney University has returned big dividends.

Within days of losing the 2006 First Colts Grand Final due to being out-muscled at the breakdown, University coach Nick Ryan met with his team and together they made a pact to never again be pushed off the ball. The players allowed themselves a mere three weeks break before getting back into training for the 2007 season at a level of intensity not seen before in Sydney club rugby. The off-season training regimen consisted of 4 weights sessions and 3 field sessions per week, switching to 3 weights and 2 to 3 field sessions during the playing season plus regular individual video analysis and field sessions with the coach.

The central ingredient of the training has been the strength and conditioning components devised by Martin Harland and administered by him and his assistant, Tim Leahy. "I guess we have two training tenets" Harland explains, "that is to always train hard and to train hard in the right areas. Thus developing the culture of no short cuts and to attend to the things in a prioritized plan from what we lack the most or what will help us the most on the park." Harland's programs for rugby players place a high degree of emphasis on basic strength development, increased bodyweight and speed. At the same time, given the year-round training commitment, great care is taken to guard against player burnout.
"We are consistently monitoring signs of overtraining," says Leahy. "Our in-season training structure does differ from our pre-season regime. The two key factors that help us guard against overtraining and player burnout is to firstly ensure our players are educated and understand the importance of post-game recovery strategies. "Secondly a close working relationship with coaching staff to ensure on field and gym volumes are of an optimal load. All variables as well as player’s subjective observation of energy, fatigue levels and contra indicators to injury are taken into account when prescribing volumes."

With a strong strength and fitness foundation laid, Nick Ryan and his team coaches are free to focus on technical proficiency and team cohesion. "The aim of our training sessions," says Ryan, "is to up-skill and empower the players, so that when they take the field not only can they read the game and make the right decisions, but then execute and finish off the activity with the help of team mates who are on a similar skill level and wave length." The payoff in terms of enhanced performance from the integration of strength and rugby coaching has been dramatic.

In the 2007 season University First Colts lost just one game out of 25 in winning both Minor and Major Premierships. Seconds and Under-19 Colts also won both Minor and Major awards. The dramatic improvement in the physical development of players can be seen from the Table below. As compared with the 2006 First Colts team, the 2007 forward pack's average bodyweight increased 5kg to 104.3kg; the backs 5.8kg to 86.2kg; and the team as a whole 5.3kg to 95.8kg.

The second year of intensive training produced even more impressive results. In the 2008 season all three Colts grades won both Minor and Major Premierships, with First Colts remaining undefeated throughout their 24-game season. Despite the age limit for Colts having dropped from Under-21 to Under-20, players' bodyweights again increased by 0.2kg for the forwards; 2.8kg for the backs; and 1.5kg overall.

"physical domination ... has enabled us to build a very strong defensive wall and to implement a highly structured game plan which we can maintain for the full 80 minutes."

To put the 2008 figures in perspective the Table also shows the bodyweights of the best professional rugby players in Australia, the current Wallabies squad. They outweigh this club-level Under-20 team by just 6kg per man in the forwards and 4.4kg in the backs. And this team of university students is currently on an unbroken 34-game winning streak! It is almost time for the administrators of Australian rugby to recognise and to take seriously the great experiment that is going on in their own backyard.

Colts coach Nick Ryan has the extraordinary record of taking his team to the Grand Final in each of the 7 years he has coached; with his only loss the 4 point defeat in 2006. He says, " A very important outcome from the intensive training regime of the past 2 years has been our ability to achieve physical domination in matches. This has enabled us to build a very strong defensive wall and to implement a highly structured game plan which we can maintain for the full 80 minutes." As with the weight training, Ryan ensures that the field sessions are short and frequently varied, with the emphasis on having his team peak on Grand Final day in September. He certainly achieved this in 2008 with the winning scoreline 39-5.

In the regular season in 2008 Ryan's team averaged a 40-point winning margin and conceded only 8 points per game. Seconds and Thirds Colts also conceded just 8 and 5 points respectively per game.

A distinctive feature of the Sydney University rugby program has been its reliance on the MyoQuip range of strength building equipment. For the past four years the University gymnasium has been the primary development site for these machines. Not surprisingly MyoQuip's ScrumTruk and Hipnee Thrust* have been extensively used for lower body strength development. Martin Harland says, "These two lower limb extensor machines have been integral to training a wide cross-section of athletes in different sports at the University. In rugby they enable us to reduce the deleterious effects of heavy lower leg extensor exercises and on-field running loads. Traditional heavy squats & deadlifts are great for strength and size but are only moderately compatible with higher running loads for field or court sports. and incompatible with a sizeable subset of your player population for various reasons. To be able to de-load players spines while building hip & knee extensor strength through range of motion means more athletes able to train intensely in the gym and front up for intense speed & fitness work in the same week.” "

The combination of an intensive, well-structured and coordinated training regimen and the use of strength apparatus with high specificity for rugby can be seen to have produced accelerated physical development which has enabled players to perform at a consistently high standard.

*In recent months the University gymnasium has replaced its ScrumTruk and HipneeThrust machines with the more advanced and compact MyoTruk and MyoThrusta models.

The MyoTruk replaces the ScrumTruk in the MyoQuip range

2008-10-19T12:57:00.008+11:00

MyoQuip is proud to announce the release of the MyoTruk, the second release in our Myo range of strength equipment embodying direct-linkage force transmission through heavy-duty industrial bearings.

The MyoTruk replaces the ScrumTruk, the first and only rugby-specific strength machine. The ScrumTruk has proven effective in safely enhancing the strength, power and body mass of rugby players, both backs and forwards, as well as athletes in other sports. Unlike most variable resistance machines the ScrumTruk was designed for complex, multi-joint and large muscle mass movement.

In rugby the ScrumTruk has been adopted by the Wallabies; Emirates Western Force; HSBC Waratahs; Queensland Reds; Auckland Blues; Northampton Saints; Sharks; Golden Lions and other leading clubs and schools.

Already its successor, the MyoTruk, has been adopted by the CA Brumbies; the New South Wales Institute of Sport (NSWIS); and Sydney Uni Sport & Fitness

Find out more about the MyoTruk

Comparative Bodyweight of Australian Professional Rugby Union and Rugby League Players

2008-10-06T16:20:00.007+11:00

Over the past few decades Australian Rugby Union and Rugby League players have been getting progressively heavier. Contributing factors have included an increased emphasis on heavy weight training, the use of dietary supplements and the high proportion of Pacific Islanders in teams of both codes. Nevertheless there remains a clear tendency for professional Union players to be heavier than League players as the following table illustrates:

Comparative Bodyweight of Australian Professional Rugby Union and Rugby League Forwards and Backs
Squad/Team (2008)	Av Weight (kg) - Forwards	Av Weight (kg) - Backs	Difference(kg)
Rugby Union Australian Wallabies - Squad	110.5	93.4	17.1
NSW Waratahs - Squad	110.9	93.2	17.7
ACT Brumbies - Squad	110.0	93.8	17.2
Rugby League
Manly Sea Eagles – Grand Final Team	101.1	89.4	11.7
Melbourne Storm – Grand Final Team	103.7	92.6	11.1

Like Soccer and Australian Football, Rugby League is a continuous-flow type game, whereas Rugby Union is characterised by frequent stoppages with a significant time lapse before play restarts. Thus Union players require a lower level of aerobic fitness. Not surprisingly then, Union players whether backs or forwards tend to be heavier than their League counterparts.

The table indicates that the difference between the body weights of professional Union and League backs is not particularly great, whereas it is much more substantial in the case of forwards. One reason for this is the need for tall, heavy lineout forwards in Union, who are often around 200cm in height with corresponding body mass. With their high centre of gravity, such players are generally unsuited for Rugby League.

But the main reason for the weight disparity relates to the fundamentally different dynamics of the modern forms of each code. As I pointed out in a 2006 article, "Rugby - the most strength-oriented code of football":

"Rugby players spend considerably more playing time in physical contact and contest with opponents than players in other forms of football.

"Much of this contact involves extended grappling and wrestling, but what is also characteristic of rugby is the amount of time spent attempting to drive forward under loads considerably heavier than bodyweight. Obviously this is so in the scrum and maul, but also at the tackle. Both ball-carrier and tackler may strive to drive one another backward for an extended time after engagement. American football and rugby league are also primarily collision sports, but their tackles tend to terminate much more quickly."

There is an obvious advantage in having greater body mass where the sport requires extended physical engagement, although this may have a cost in terms of reduced mobility. Thus it can be confidently anticipated that Union forwards will always tend to be heavier than League forwards.

Those who advocate or foresee a merging of the two codes of Rugby fail to comprehend the fundamentally different physical demands placed on forwards in Union and League.

Champion Australian rugby club powered by MyoQuip strength equipment

2008-09-29T01:21:00.009+10:00

Australia's premier rugby club, Sydney University, has completed another outstanding season in 2008. A significant factor in its success in recent years has been its use of the MyoQuip ScrumTruk and HipneeThrust to build the size and strength of its players.

Some of the Club's achievements:

Has won the Sydney First Grade Premiership for the past four years
Has defeated the Brisbane Club Premiers in both 2007 and 2008 to claim the title of Australian Club Champions
Has won the last five Sydney Club Championships as well as the last four Colts Club Championships
Has won Premierships in all three Colts Grades in both 2007 and 2008
Was undefeated in 24 matches in First Grade Colts in 2008

In June 2006 I wrote an article titled "Building bigger and stronger rugb y players - the Sydney University experiment" drawing attention to the increasing emphasis on size and strength in modern rugby:

"Modern defensive alignments and strategies have transformed rugby matches into contests of attrition where bigger and stronger teams tend to wear down their smaller and physically weaker opponents over the course of a game. Perhaps the most notable change has been the increased importance of physical dominance in the backline.

"Responding to this, Sydney University's rugby club has been able to demonstrate that with the right combination of coach and infrastructure, it is possible to fast track the physical development of players outside a professional playing environment. In fact within a couple of seasons these players are able to achieve a body mass comparable to that of seasoned professionals together with a solid foundation of basic strength."

Current-year data confirms that this is still the case. Based on the player data listed on their websites the average body weights of the current squads for the Wallabies, Waratahs and Brumbies are 103.0, 103.3 and 102.0kg respectively. The average body weight for Sydney University's starting fifteen in this month's First Grade Grand Final was 101.5kg. It is true that this team included three Wallabies in Phil Waugh, Al Campbell and Dean Mumm, but even with these players excluded the team's average body weight was still 100.1kg. It can be seen that the young, part-time, unpaid Sydney University players weigh only a couple of kilograms less than seasoned professionals.

For the past five years the University Club has been operating an Elite Development Squad (EDS) program for its top Grade and Colts players. Utilising one of the best equipped gymnasiums in Australian rugby, players train for eleven months of the year and undertake four weights sessions per week off-season and two to three while playing.

The program's strength and conditioning components have been devised by Martin Harland and administered by him and his assistant, Tim Leahy. Harland's programs for rugby players place a high degree of emphasis on basic strength development and rugby-specific fitness. A distinguishing feature of his approach is a concentration on heavy lower body work. In the past couple of years he has decreased the amount of squatting and deadlifting and and made more intensive use of the MyoQuip ScrumTruk and HipneeThrust, apparatus that targets the large mass leg extensor muscles, specifically the gluteal and quadriceps groups.

Exposing backline players to basic strength training

Another distinctive feature of Martin Harland's rugby training regimen is his requirement that backs undertake the same rigorous basic strength routines as forwards. Many strength and conditioning coaches reserve the heavy "grunt" work for forwards, or even restrict it to the tight five.

Exposing backs to very serious weight training has produced quite significant results at Sydney University, as evidenced by the following table comparing body weights of forwards and backs for the Wallabies, two of the four Australian Super 14 franchises and Sydney University:

Comparative Bodyweight of Forwards and Backs
Squad/Team (2008)	Av Weight (kg) - Forwards	Av Weight (k) - Backs	Difference (kg)

Wallabies - Squad	110.5	93.4	17.1
NSW Waratahs - Squad	110.9	93.2	17.7
ACT Brumbies - Squad	110.0	93.8	17.2
Sydney University – Grand Final Team	107.3	94.9	12.4

Not surprisingly, the University's young forwards are outweighed by each of the professional squads. However, in the backs the situation is reversed with the University players outweighing the national and provincial squads.If we look at the column showing the difference in bodyweight between backs and forwards it can be seen that for Sydney University it averages 12.4kg, against 17.1 to 17.7kg for the professional squads, a very substantial difference.

The Sydney University experiment seems to be providing clear evidence that the bodyweight of rugby backs can be dramatically increased through serious weight training, and the results achieved by the Club in competition suggest that there has been no adverse impact on their playing performance.

The main justification for building heavier backs with superior leg drive lies in the already mentioned importance of physical dominance in the backline. With the modern emphasis on structure and coordination in defensive alignments, bigger and stronger backs are better able to continually repel opposition attacks and also over the course of a game are likely to create physical and mental fatigue in their counterparts.

Martin Harland has also regularly used both the ScrumTruk and the HipneeThrust in conditioning the University's rowers and female basketballers. The Rowing Club is currently ranked No. 1 in Australia, while the Sydney University Flames have appeared in the two most recent Grand Finals of the Australian Women's National Basketball League. The MyoQuip apparatus would appear to have strong applicability to not only these sports but also to other football codes such as American football, Australian football and rugby league.

(In recent months the Sydney University Gymnasium has replaced its ScrumTruk and HipneeThrust machines with the more advanced and compact MyoTruk and MyoThrusta models.)

MyoQuip releases the MyoThrusta leg extensor strength builder

2008-09-23T10:46:00.011+10:00

MyoQuip has released the first of its Myo range of strength equipment. The Myo technology embodies direct-linkage force transmission through heavy-duty industrial bearings rather than the cables and pulleys used in our previous models.

The MyoThrusta replaces the HipneeThrust but takes up 40% less floor space and eliminates problems of cable slack and increasing friction with extended operation.

Unique features and performance characteristics of the MyoThrusta:

· Fully recumbent exercise position.

· Comfortable and natural body position throughout the full range of movement ensuring no adverse loading on spine, hips or knees.

· Exercise movement range from extreme flexion of hip and knee joints to full extension.

· Uses MyoQuip’s patented technology providing effective activation of hip and knee extensors over the full range of movement

· Synchronised joint angles distribute load evenly between hip and knee extensors.

· Pin adjustment of the rate of change of load providing multi-functionality of the apparatus.

· Intuitive operation - no requirement for instruction in correct technique.

· No danger of exerciser being trapped under excessive load.

· No stress on ankle joint - no imposed dorsiflexion of the ankle.

· Ideal for rehabilitation of hip or knee joints.

High functionality for developing and strengthening leg extensors

The leg extensors - primarily the gluteus maximus and quadriceps - constitute the body's largest and most powerful muscle group. They are also vitally important for a wide range of athletic and sporting activities.Traditional methods of developing and strengthening leg extensors include the barbell squat and the leg press and leg extension machines. However each of these has significant limitations. They do not adequately exercise the muscles from full flexion to full extension, and there are also issues associated with adverse loading and excessive shear forces on the lumbar region and knee joints.The MyoThrusta has been designed to overcome these problems.

As can be seen in the figure above the athlete operates from a supine position so that the action of the extensors can be effectively isolated. The recumbent position also means that the spine can comfortably cope with the compressive forces generated.The arc through which the foot plate of the machine moves is designed to closely parallel the path that the feet would normally traverse if moved from flexion to extension without resistance. It also creates a natural tendency for the two joint angles to vary synchronously so that they are effectively sharing the load throughout the exercise movement.

Exercises the total range of limb movement

It can be seen that at the start position both hip and knee joints can be tightly flexed. As the feet move forward the trunk and shanks remain virtually parallel until the legs are fully extended. Thus the potential range of movement is from included angles of around 30° to 180°. (In fact, by starting with the feet placed low on the footplate it is possible to hyper-extend the hips beyond 180°.) Throughout this extreme range of movement high range muscle fibre recruitment is achieved by means of our patented technology.

With an exercise like the squat or a machine such as the conventional leg press, exercisers attempting heavy loads tend to restrict themselves to modest degrees of hip and knee flexion. This is because as joint flexion increases, the exerciser's capacity to cope with resistance decreases. By contrast, with the MyoThrusta the effective load is automatically reduced when the joints are flexed and increased as they extend.

Multi-functionality

The rate at which the effective resistance changes is varied by selecting different pin positions on the adjustment bar.

With mid-range pin settings the effective load from the start of the movement to full lockout is intended to match the body's capacity to handle resistance, so that the exerciser has to expend basically the same degree of effort throughout the movement.

With low-range pin settings the increase in effective load from start to finish of the exercise movement is greatly increased. These notch settings are ideal for practising explosive or ballistic movements. When utilising heavy loads there is a "ballistic braking" effect toward the end of the movement, eliminating the need to decelerate.

High-range pin settings are ideal when the focus is on overcoming inertia, i.e., moving a heavy load from a position of rest. For example, if the objective is to improve performance in the barbell squat, the additional initial loading conditions the leg extensors to operate more effectively in the deep squat position.

Laying a foundation of basic strength

Until the introduction of the HipneeThrust athletes had no means of developing optimal muscle strength through the full range of a complex bi-articular movement. The MyoThrusta provides an even more effective way to adequately strengthen the major extensor muscles of the lower limbs before focussing on sport- and activity-specific tasks. This results in obvious and significant performance and injury-reducing benefits.

Contact MyoQuip for further information or for a quotation on the MyoThrusta.

Some thoughts on engagement under the new rugby scrum law

2007-04-18T13:40:00.000+10:00

An email I received from Colin Astley reads:

"With the new scrum engagement rules everybody's looking for that little something to get the advantage. What are your views on my theory that if you use a quick 'squat' on the engage call, this would give you that extra 'bang' and you would be coming in at a rising angle. As there is only a split second to utilise this technique, the player would have to train the stretch-shortening of the muscle.

"Look forward to your thoughts,

"Colin"

I think that Colin is really onto something significant here. What we are observing under the new rules is a tendency to revert to the practice of the No. 8 pulling back on the locks while the referee goes through his " Crouch - Touch - Pause - Engage" chant. On "Engage" the No. 8 pushes with straightened arms against the buttocks of the locks before attempting to wedge his head between the locks' hips.

Prior to the "Engage" the front seven of the pack are pulling forward or leaning forward against the restraint of the No. 8. Once that brake is released they are pitched forward. Apart from the difficulty of coordinating the transmission and timing of force through the three rows of players, there are other problems from a biomechanical viewpoint.

In conventional scrummaging, front rowers typically crouch so that they maintain a stable position while being positioned to generate a powerful shove. By contrast, if they are being pulled backward their natural tendency is to adopt a very different body configuration. They will be more erect, and in particular their hips will be higher. That is what seems to be happening since the introduction of the new law - front rows are falling forward into the engagement with a consequent increase in collapses and resets.

I think that Colin has not thought through issues of timing when he suggests "a quick 'squat' on the engage call". That is far too late in the sequence. However, if around the time of the "Pause" call all forwards crouch or sink, they will be in an ideal position to rapidly generate a cohesive and coordinated upward-slanting shove on the "Engage". The structured and measured sequencing of the referee's calls under the new law makes such a technique very feasible.

What Colin is talking about when he refers to "stretch-shortening" is a phenomenon utilised by jumpers and gymnasts to increase jumping height and also observable in the ballistic back swing or pre-stretch of throwers and racquet game players:

"The stretch-shorten cycle (SSC) describes a period in which a muscle undergoes eccentric work, is stretched, contracts isometrically to stop the counter movement, and follows immediately with maximal contraction with the intention of applying a maximal force. The cycle utilises the principle of stretch reflex, of the length-tension relationship of muscle, storage of elastic energy in the muscle-tendon complex, enhanced potentiation of muscle, and chemical energy from the preload effect." (Doug McClymont and Mike Cron, "Total impact method: a variation on engagement technique in the rugby scrum" http://www.coachesinfo.com/category/rugby/84/)

There is absolutely no doubt that a pack which is trained to utilise stretch-shortening from a low crouch position will generate much more effective and purposeful force than one that one that adopts the "pull-back-then-release-the-brakes" method.

I believe that the new scrum law is potentially a significant improvement, subject to two conditions. Firstly, referees must rigidly enforce Law 20.2 (b) which requires of front rowers that "each player's shoulders must be no lower than the hips". Secondly, the practice of No. 8s pulling back the pack should be outlawed as it has been clearly demonstrated that its effect is directly contrary to the primary intent of the new law, i.e., to produce safer engagements and to minimise resets.

ScrumTruk's first Olympian

2006-12-01T12:08:00.000+11:00

Originally developed for increasing the pushing strength of rugby forwards, MyoQuip's ScrumTruk has proved its versatility across a variety of sports. At the University of Sydney it has been used by Australian national representatives in rugby, rowing and women’s basketball, but the first Olympic representative to use it was in the winter sport of bobsleigh racing.

Fifth-year veterinary science student Astrid Loch-Wilkinson was the pilot of Australia’s first-ever women's bobsleigh team which competed at the Winter Olympics in Torino, Italy, in February. Astrid and brake woman Kylie Reed finished 14th with a time of 3 minutes 55.11 seconds for their four runs.

Athletes from power sports such as weight-lifting and athletics are often recruited for bobsleighing because they have appropriate attributes to gain an edge at the explosive push-start that characterizes the event. Astrid had the necessary athletic ability having been an Australian national 400m hurdling champion and a Sydney University Blue in soccer.

For her strength training she turned to Martin Harland, the University's Athlete Performance Manager, himself a former Winter Olympian in the bobsleigh. Harland was very impressed by Astrid's excellent training ethic and innate capacity for strength development.

In addition to conventional basic strength exercises such as the squat and dead lift the pair made extensive use of the ScrumTruk at the university gymnasium. The machine has strong specificity for the bobsleigh push-start because in both activities force has to be generated and delivered in the horizontal plane.

"I used the ScrumTruk regularly in my strength training leading up to the Olympics," says Astrid. “I found the machine was great to use in conjunction with my Olympic lifting training. It assisted me in becoming stronger in the 'pushing' action related to bobsleigh".

Careering down a twisting track of ice at 125 kph in a flimsy shell would seem to require extraordinary courage. “My first run down the ice in a sled was terrifying as I basically had no idea what I was doing,” she admits. But after three years of piloting bobsleds in World Cup races, she says she is used to the speed.

“It becomes slower and slower the more I race. Before each race I study the track very intensively with my coach so I know precisely how to steer every part of it. I enjoy racing but it’s pretty intense and it doesn’t feel fast because I have to concentrate on the technique”, she says.

Some of the bobsleigh teams competing in Torino had million dollar budgets. By contrast Astrid and Kylie were largely self-funded. Because of Australia's isolation from alpine sports, much of their initial training consisted of pushing a billy-cart - a form of wheeled trolley used by children - around a local football oval. They were also required to travel to Europe for extended periods each year racing on the World Cup circuit.

“Bobsled racing costs $30,000 to $40,000 a year”, Astrid says. “I would like to go to the next Winter Games at Vancouver in 2010 but we need some funding”.

In the meantime she has embarked on a fourth sport. She is still training at the University gym under Olympic lifting coach Simon Kent and participating in weightlifting competitions.

Body height in the rugby scrum: the value of equal hip and knee joint angles

2006-11-29T16:09:00.000+11:00

Introduction

Despite the undoubted importance of efficient force delivery in the scrum, there is very limited published material addressing the actual dynamics of force delivery.

Powerful scrummaging is dependent on appropriate body position and limb alignment, not just in the relatively static situation immediately after engagement but throughout the entire contest of the scrum. Much of what passes for best practice in scrum formation reflects a failure to critically examine the actual geometry and mechanics of body position and how these change during the scrum contest.

I believe that an optimal configuration of body position and limb alignment on engagement involves hip and knee angles each set at 90° with both trunk and shank being parallel to the ground. During the scrum, hip and knee joints should move synchronously so that their angles remain equal. The hips may sink slightly relative to the shoulders but trunk and shank should remain parallel.

Body height and joint angles – what the experts advocate

Modern thinking on scrummaging usually advocates consistency of body shape for all participants regardless of position, with the feet approximately shoulder width apart and toes level. There also seems to be general agreement on the need for the trunk to be horizontal or for the shoulders to be slightly higher than the hips. (Greenwood, 1978; Smith, 2000; NSWRU, 2004; Vickery; O'Shea, 2004: Argentinian Bajada method)

However, when joint angles are discussed there is substantial divergence of opinion on the appropriate angle at the knee joint:

Jim Greenwood, Total Rugby, 1978

More than three decades on Greenwood's book, though overtaken by a succession of Law changes, remains a rugby classic. Its underlying logic is compelling. The figure below summarises his views on body position:

Greenwood argued that the optimal pushing position required hips below shoulders, 90° joint angles at hip and knee, and "knees near the deck." It can be seen from his drawing 1c above that the trunk and shank are parallel.

The figure also considers the effect of different joint angles on force delivery, and this is further discussed elsewhere in the book:

"Thighs approximately vertical. It's obvious that the more acute the angle of the knee the greater the potential range of the drive, but the more strength is required to initiate it. … [Y]ou only have to go into the full-flexed position to realise that a drive from that position is very much slower and more difficult than a drive from a half-squat. Players tend to assume the position in which they feel most capable of a snap drive. On the other hand, the smaller their degree of flexion the smaller the range of drive. For a six-foot player, a flexion of 90° at the knee produces a potential forward movement of about a foot, which allows for a snap drive, and the necessary continuation shove. That is more than enough for all practical purposes, and may well be seen as a maximum."

Greenwood also emphasises pack height:

"Shoulder height in the front row determines how low the pack can get. From every point of view, the lower the pack gets the better - provided the hooker is capable of striking. … Against the head, it's better to get even lower than usual. What this comes to is that the props get closer and closer to the basic driving position, with their feet further back and wider, their hips correspondingly lower, and their upper bodies close to horizontal. This has two advantages: it restricts the opposing hooker's strike, and may even prevent it, and it ensures a more powerful and effective drive. It's worth pointing out that most scrum-machines are set too high to allow effective low scrumming practice."

Graham Smith, RFU Technical Journal, Autumn 2000

Smith emphasises body position. "Each player must take up a position by which the force generated by the large muscles of the lower body, the quadriceps and gluteals particularly, can be transmitted effectively and SAFELY through the spine, the shoulders and the neck."

"The power the legs can produce or resist is conditioned by the angle at the knee. With the thigh vertical, or near vertical, this angle should be maintained between 90° and 120°. The greater angle will be required by the props who need to be more upright in stance in order to provide a base on which, the locks can push. The other forwards can however, adjust their positions to achieve 90° at knee."

Smith examines the consequences of a prop being experienced enough and strong enough "to alter the height of the scrummage quite legally." and "produce a significant disruption of the opposition scrummage. A prop can thus legally force his opponent to scrummage lower, at a height he finds uncomfortable, and which is mechanically inefficient."

An opponent who is unequal to this pressure will normally react in one of two ways. Firstly, he can move his feet further and further back to relieve the discomfort, as in the figure below:

He may be forced to "take his feet so far back that he goes to ground flat on his face … Even if he doesn't go to ground the position he is forced to adopt allows less and less of the power generated behind him to be transmitted though on to the opposition."

Alternatively, the prop that is being forced to scrummage too low may "bend forward at the hip, his head gradually getting well below the line of the hip," as in the figure at right.

"Because of the pressure from behind by his own lock the prop can be put into a seriously uncomfortable position. He's caught in a vice, and his position becomes even more unpleasant should his superior opponent drive forward at him."

New South Wales Rugby 2004 Coach Education Series - Effective Scrummaging

This document states that "almost 99% of all scrimmaging problems can be related directly to the body shape of the participant(s)." Amongst its prescriptions for "correct body shape" are:

"Knee bend (100 - 110° approx) directly beneath hips will assist in generating and transferring weight.

"High, steady hips will allow those players behind to apply force through a near vertical surface. The hips should NOT at anytime be higher than the shoulders."

Further on there is a series of images showing the sequence of scrum formation. The final image, reproduced at left shows the engagement. My rough scaling indicates that the loose head prop's hip and knee angles are around 90° and 120° respectively. However it appears that his shoulders are about 15°lower than his hips. This would not only be illegal but would place him and his fellow front rowers in an inherently unstable situation. He is not in a position either to support his own bodyweight or to generate a horizontal shove.

Phil Vickery, Scrummaging Masterclass

"The knee must be bent to generate the explosive power of the legs. If only slightly bent, there will only be a small, but quick, motion forwards. If a deep bend, the forward movement will be slow but be farther. Straight legs prohibit players going backwards but there is little forward momentum. The ideal is a vertical thigh with an angle of about 120 degrees between the thigh and the calf which should provide the required thrust."

Brian O'Shea, Scrum Presentation, England July 2004

In discussing body shape O'Shea specifies:

"A bend at the knees which provides an angle of approximately 110-115°, which permits power generation by the legs. This position is a 'trade-off' between the generation of dynamic power and the length of push that can be achieved. If the bend at the knees is not adequate the distance gained by the push is hardly worthwhile. If the bend at the knees is too great the loss of mechanical advantage makes it difficult to be dynamic."

He does not deal directly with the hip angle but calls for a "straight, flat back" and "high hips" that "should not be higher than the shoulders." Significantly, when illustrating individual common faults, he uses a diagram, reproduced above. where the player with correct technique appears to be in the 90-90 position.

Argentinian 'Bajada' scrum method

Argentinian teams are renowned for the effectiveness of their scrummaging and the central importance of the scrum to their game. From an early age, Argentinian forwards are schooled in the 'Bajada' or 'Bajadita,' a radically different scrum method invented in the late 'Sixties by the legendary Francisco Ocampo.

A defining characteristic is the 'Empuje Coordinado' or 'Coordinated Push.' "The scrumhalf gives a three part call after the "engage". On "pressure" all members of the pack tighten their binds and fill their lungs with air. On the call "one" everyone sinks; the legs at this point should be at 90 degrees. On "two" the pack comes straight forward while violently expelling the air from their lungs. A key note is that nobody moves their feet until forward momentum is established. If the first drive is insufficient the scrumhalf begins the call again and the opposing pack is usually caught off guard and pushed back." Rugby Union from the Virtual Library of Sport

Sergio Espector, a Level 3 Argentinian coach, recently summarised the main features of the Bajada. After the engagement he stipulates that "all eight players must flex their knees to 90 degrees ... [and] players must never move their feet off the ground until they overcome their opponents and have positive inertia."

The Bajada is recognised as an extremely effective and powerful form of scrummaging.

Summarising the views of these authors:

Analysing joint angles in the scrum

We can visualise the body in scrummaging mode as a system of skeletal levers articulated primarily at the hip and knee joints. The levers are activated by muscular contraction of the relevant extensor and flexor muscle groups. The task is to determine optimal ways to operate those levers to achieve the desired goal of delivering force in the horizontal plane, given that the primary objective of any pack is to effectively resist and, if possible, overcome the horizontal weight force generated from the opposing pack.

The figure above depicts the limb configurations of a player packed into a scrum with his hip and knee angles both at 90°. (For the sake of illustration I have assumed that the player is 1850mm tall with trunk, thigh and shank lengths of 650mm, 460mm and 480mm respectively.) In order to compare the 90-90 configuration with that advocated by some of the experts listed above, the figure below shows how the body position of the player would change if he retained the 90° hip angle but increased his knee angle to 110°.

As can be seen in the figure a knee angle of 110° requires the shank to slope upward 20° above the horizontal. This results in the height of the trunk above ground level rising by 160mm, a quite substantial difference when packs are preparing to engage.

A pack using the 90-110 configuration and therefore accustomed to training and playing with an obtuse knee angle will be disadvantaged if forced lower on engagement. The front row will have no choice but to reduce their knee angle if they are to avoid packing illegally, i.e., with hips above shoulders, and the rest of the pack will have to similarly adjust. Quite apart from the illegality, a failure to adjust the knee angle places the front row in an essentially unstable body position with the risk of the shoulders being driven even further below hip height.

As with the squat exercise, when players under severe load go into a deeper joint contraction than they are accustomed to, they have to operate in a 'zone of discomfort.' The cohesion of the pack is threatened; players may be forced to give ground and at the very least are not in a position to generate a powerful forward shove.

By contrast, a pack accustomed to function with a 90° knee angle can quite comfortably cope if the engagement takes them higher than they would prefer, as they are still operating in the range of joint angles they are familiar with.

Effective scrummaging requires coordinated and synchronised activity by all eight members of a pack. It is also essential that throughout the whole scrum engagement the pack remains in a position to initiate or effectively repel considerable force. Adoption of a 90-90 joint configuration facilitates both objectives.

Coordinated action can be readily achieved if players are trained to start from a common orientation of the joints whatever their playing position, and then to keep their shanks and trunk parallel at all times. This means that the joint angles at hip and knee remain equal as the pack drives forward. Each player is effectively contributing to the collective transmission of force along the line of their backs.

Muscles generate most force in the mid range between full extension and full flexion. From a starting point of 90-90 the leg extensors typically remain operating within that efficient range even when the pack achieves a significant shunt forward. Figure 8 illustrates how joint angles change following a push forward of 300mm. As Greenwood suggests, a "forward movement of about a foot ... may well be seen as a maximum" without repositioning of the feet. As can be seen both joint angles have extended to 138°, but this still leaves the players in a position to continue their forward momentum if necessary. Note that both the trunk and shanks have dropped 6° below the horizontal.

The 90-90 joint alignment provides the optimal platform for horizontal force delivery which can be sustained through a considerable range of movement forward, while simultaneously tending to force the opposing pack to function within a 'zone of discomfort.'

Reference

Jim Greenwood, Total Rugby: 15-Man Rugby for Coach and Player, London: Lepus Books, 1978

Scots overpowered by Wallaby size

2006-11-27T08:29:00.000+11:00

Following the Wallabies' emphatic defeat of Scotland at Murrayfield in Edinburgh on Saturday, it was interesting to note comments by the Scots' coach Frank Hadden:

"It's difficult to front up week after week against heavier sides.

"We've hidden that for a while but the Australian pack were able to create the opportunities for their danger players.

"They have quality backs and when they are going forward they're very difficult to stop."

The rugby community is gradually waking up to the idea that increased size and strength confers a huge advantage in the sport, and not just in the forwards. Heavy backs are also able to gradually wear down their lighter opponents.

It is difficult for a national coach to do much about the physical attributes of his players - he basically has to work with the available material over a very short preparation period. The groundwork for physical dominance has to be laid much earlier - even at school level.

Those in charge of Scottish rugby would do well to investigate what is being achieved at Sydney University in terms of the systematic physical development of young players.