Posted by: Teacherman () on Wed May 26 08:17:20 2004

Hi All
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> There has been a lot of discussion lately on the board regarding whether body rotation is generated from the ground or starts in the middle at the hips. Some say they initiate rotation with the legs as the heel lowers, others say they start with the hips with little coming from the legs.
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> It may be interesting to discuss if it really matters. – Assume both theories generate the same rate of shoulder rotation and axis angle. In that case, what differences to the swing plane or bat speed would the different theories produce?
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> I will be traveling to Oregon the next few days. Therefore, my opinion on the subject will be delayed until Friday or Saturday. Also, it might be longer between board updates.
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> Jack Mankin
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IMO it has to do with the speed at which they move. Faster the better. Faster the quicker. Allowing more read time.

And, IMHO, the hips move faster when they move themselves than when they rely on the feet or knees to move them. And, don't underestimate the weight shift involved in starting rotation.