[Jeff]

DG

I have viewed the chapter series and the letter.

Tom doesn't explain the biomechanics of the right arm throw action or formulate a causal relationship between the right forearm throw and the downswing pivot action.

How does a right forearm throw work in terms of which muscle is active, and whether it is isometetrically or isotonically active, and when exactly it's active?

I also cannot understand an automatic causal connection between a right arm throw and lower body activity.

Peter Croker also proposes such a causal connection in his hand swing theory - see http://www.petercroker.com/englisch/...olferapril.htm

However, both Peter Croker and Tom Tomasello are both presuming that the lower body will respond appropriately. However, "appropriate" with respect to the downswing pivot action could be considered to be a learned behaviour and not necessarily an automatic action.

Finally, how does a right arm throw improve on the alternative of starting a downswing pivot action with a right shoulder throw (as per 10-20-C)?

Jeff.