Posted by: Teacherman () on Wed Apr 7 21:42:14 2004

>>> I didn't see any mention of the muscles that keep the arms in or let the arms out. <<<
>
> Hi Teacherman
>
> This site defines swing mechanics by the forces acting on the bat that generates angular displacement. The muscles that apply THT and pull the lead-arm across the chest would be the same muscles an archer uses in pulling back the bowstring. – There is another site that claims other people’s work as his own by simply renaming the mechanic by the muscles and bones involved. That may be the site for you.
>
> Jack Mankin
>

If the body can not rotate so hard that one can not control the position of his arms, and, if the "L" is away from the body for an outside pitch, yet in or against the body for an inside pitch, there must be muscles controlling the arms involved in the swing. The arms have to play a role in setting the arc. It won't happen automatically.

I find the direction of THT irrelevant to my question of what muscles are controlling the amount of extension out of the "L".

It's your theory that THT exists and that the direction of it determines the proper arc of the bat for various pitch locations. Well, I can pull back in several directions and I can get varying degrees of extension from the "L" from each direction.

Something is capable of controlling that. My question is...What is controlling it?