Presentation to the Indian Press Group 28th December 2003 – Metro Hotel Melbourne

Greg ChappellIan Frazer

Feedback about the optimisation and safety is the release point

The same principles apply in bowling

The indicator is the ball releaseforward of the bodies centre of mass

The quality of the ground reaction forces generated will determine if the ball is released forward of the centre of mass

The ground reaction forces generated as a result of the bowler unweighting,are the result of the previous forward and rotational momentum of the body

The action of the touchdown results in the reactionof the levers for optimisation, provided the levershave been set up properly prior to unweighting

What happens isn’t What makes it Happen!

Momentum! Coil!

But isn’t Brett a Front on bowler?

Isn’t this the most efficient method? Or is this?

The bowling arm initiates the jump

It then, importantly,initiates the coil

The top half of the body is now set up with a “Degreeof Separation” to the bottom half. It can know work efficiently provided it has sufficient forward momentum and avoids falling through the unweighting

All the top bowlers naturally load to optimisethe momentum out into release

Animals are wonderful examples of how the body usesthe different segments to optimise movement. Take some time and watch how they use extension, flexion, rotation, ground reaction forces and run ups to achieve appropriate end goals

The energy out of touchdown determines the safe optimal use of the levers

The best optimise the lever length for the requirements,thereby optimising arm momentum (mass x velocity)

Given the top half has set up the coil, it is the top half that begins the rotation out. But remember the bottomhalf has greater mass so it must have been appropriatelyloaded or it will manipulate the optimal patterning!

A study done in the early 70’s at the University ofWestern Australia highlights the hip drop when the body is loaded with insufficient momentum

Dennis improvement in his ability to load the body isclearly evident in the before and after pictures

Set it up appropriatelyand the body will naturallydeliver