In reading this thread to learn more about TGM, I noted that Yoda stated in post #53, #56 and #61 that the lower spine moves away from the target at the startup of the backstroke. Surely that is wrong.
Doesn't the lower lumbar spine move towards the target as the golfer pivots over the right femoral head in the backswing?
Here is a diagram showing the movement of the right femoral head in the backswing pivot action - it moves backwards and leftwards. That causes the lumbar spine to move slightly leftwards, although the face-orientation of the lumbar spine becomes increasingly rightwards.
Jeff.
It depends on the type of Hip Turn. If you agree with Homer and believe that there should be a Hip Slide or shifting of weight prior to the Hip Turn (10-14-B) and that there's a Stationary Head, then the base of the spine would be moving away from the target in Start Up.
The diagram that you've used would assume no weight shift and a single axis of rotation. (10-14-C)
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