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Post by imperfectgolfer on Aug 26, 2012 19:04:14 GMT -5
Consider this BM-forum thread. www.brianmanzella.com/golfing-discussions/17598-faldo-just-said-rorys-hips-turning-716-degrees-per-second.htmlMike Finney posted that Faldo stated that Rory's hips spin at 716 degrees/second, which is confirmed by a TPI research institute study. Ringer then stated-: " I've never seen him spin around twice while hitting the ball." What a moronic comment. Brendan stated-: " Ever see his downswing take .5 of a second?" Another moronic comment. The figure of 716 degrees/second is probably his maximum instantaneous pelvic rotation speed - which usually occurs between P5 and P6. mgranto then wrote regarding the video that shows that Rory's rotary pelvic motion temporarily reverses near impact-: " NOOOOOOOOOO! I've seen casio footage showing all elite ball strikers don't slow their hips. Now you say they not only slow, but some go in reverse... whaaat?? But, but, but Casio says.." What point is he trying to make? Just because Rory's pelvis temporarily reverses doesn't mean that other elite golfers must manifest the same biomechanical phenomenon. Hogan's rotary pelvic motion was continuous/uninterrupted from P4 to P7.5+. They obviously have no idea why Rory's pelvis temporarily reverses its rotary motion in his swing action. Jeff.
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Post by burner on Aug 27, 2012 16:43:51 GMT -5
I don't think Rory's hips do reverse. I think his left hip elevates and moves slightly rearward before settling back down into its original plane of motion.
It has to be nigh on impossible to reverse and restart a pivot motion within such an unbroken time frame.
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Post by imperfectgolfer on Aug 27, 2012 19:48:56 GMT -5
Burner,
Look at the hip motion graph in the TPI video presentation - where Greg Rose has documented Rory's reversal of hip motion (at a speed of >300 degrees/second). I think that it is even grossly visible when watching the video frame-by-frame using a swing analyser program.
I think that the re-starting of his pelvic motion (after the temporary reversal) is not due to active contraction of pelvic area muscles, but due to the pelvis being passively pulled forward by the rotating upper torso/spine (between P7 and P9).
Jeff.
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