Regarding your concept of the TGM pivot-stroke swing - do you think that the pelvis/shoulders/arms are rotating at roughly the same speed in the early downswing - before the lead arm reaches the parallel-to-the-ground position; or do you believe in the kinetic link theory where there is a time-sequential transfer of energy that causes the pelvis to move first, the shoulders second, and the arms third with each sequentially moving part maximally rotating at exactly twice the speed of the preceding moving part?
Jeff.[/quote]
The problem i see here is it depends on the definition of when a backswing has finished and a downstroke has started ..Kinetic Link may have a different view on this opposed to TPI..and which player is tested.
For instance ..the hips can have a running start on the shoulders due to the pressure being moved to the reAR foot and the center of mass being in front of the pressure being shifted to the rear foot and this can occur in the backswing..so the shoulders have some catching up and then of course so do the arms due to how Far they have to travel
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