drawings of muscles and exercise apparatus

Thursday, December 29, 2005

Introducing the ScrumTruk Rugby Strength Builder

The ScrumTruk rugby strength builder incorporating QuadTorq technology The ScrumTruk was the first machine developed by MyoQuip Pty Ltd. Originally designed specifically for rugby forwards, it converts the vertical resistance of gravity into resistance in the horizontal plane, which is where the rugby forward operates. Forward dominance is the platform on which rugby success is built. In establishing dominance, the crucial factor is the ability of the forwards to deliver pushing power and to withstand the counter-force generated by the opposing pack.
In exercising with ScrumTruk, the lower spine adopts moderate curvature necessary for effective pushing and avoidance of lower The starting position for the ScrumTruk with hip and knee angles at 90 degreesback strain. This position also triggers isometric contraction of the stabilising muscles of the pelvic and abdominal regions.
For open field play, ScrumTruk develops the leg drive essential in both attacking and defensive engagements. Its use is therefore recommended for both backs and forwards.
The most novel feature of the ScrumTruk is its use of MyoQuip's patented QuadTorq technology, which permits full-range concentric and eccentric loading.

The extended position for the ScrumTruk with hip and knee angles increasing synchronously


Nick said...

ScrumTruck would be a great exersize to replace leg presses if you believe quad strength is a big requirement. Leg presses are often trained, as pointed out in you web page, because of the perceived saftey. From my undertsnading and I will need to find the relevant information to quote the load on peoples lumbar region of the back is significantly higher in leg press position than for exersizes like deadlifts and squats which are often believed to be injury causing, but are not. The scrum truck apears to teach the trainee to keep the back arched which would lead to better back load mechanics and less injury.

Bruce Ross said...

Thanks for the comment, Nick.

In my experience rather than the ScrumTruk "teach[ing] the trainee to keep the back arched," the effect of gravity on the horizontal back pulls the spine into its natural lordosis or curvature, similar to that when the person is standing upright.

With this alignment the spine can handle very great loading or compression. For this reason people who have given up on the squat because of bulging discs or back pain are able to fully load their leg extensors with no discomfort.

Another perceived consequence of ScrumTruk use, which I think is also related to learning better posture, is that performance in the squat itself is enhanced, in respect of both poundages and correct form.