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Old 03-02-2011, 05:56 PM   #37
salsainglesa
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Join Date: Dec 2005
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check out this video, its about rotation

internal rotation and pronation are analog movements. In this position rotation does help acceleration alongside a pronation followthrough, but, chech out that the position, it has to be this one... in this position the flexion of the hand actually doesnt help produce speed, it only changes the raquet head angle. If the arm is fully extended as in the amateur player example then it does accelerate the raquet, but this force wont be nearly as strong as a rotated shoulder and pronated followthrough.

http://www.youtube.com/watch?v=lTRvxaBMh8s
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