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Post by dubiousgolfer on Apr 28, 2017 19:46:59 GMT -5
Dr Mann
I've followed Kirk Junge for a few years now as I was intrigued by his setup for impact swing action and the various claims that it was back friendlier and less difficult to master than the conventional swing. The only PGA golfer I know about that comes close to swinging this way is Bryson DeChambeau but why don't more golfers adopt a setup that matches impact?
See these video by Kirk explaining his reasoning.
Do you have any opinions regarding his claims that this swing action is easier and that compression on the spine is less than conventional actions?
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Post by imperfectgolfer on Apr 29, 2017 11:22:52 GMT -5
Dr Mann I've followed Kirk Junge for a few years now as I was intrigued by his setup for impact swing action and the various claims that it was back friendlier and less difficult to master than the conventional swing. The only PGA golfer I know about that comes close to swinging this way is Bryson DeChambeau but why don't more golfers adopt a setup that matches impact? See these video by Kirk explaining his reasoning. Do you have any opinions regarding his claims that this swing action is easier and that compression on the spine is less than conventional actions? Kirk has based his swing action on the swing action of Moe Norman and Bryson DeChambeau - which is a zero-shift swing action where the golfer's address posture (arms extended outwards away from the body with a small accumulator #3 angle due to the use of a mid-palmar left hand grip pattern) is essentially the same as their impact alignment. Conceptually, it is a very simple swing action and it is very compatible with a TGM swinging technique where the right forearm is on-plane with the clubshaft both at address and at impact. The only pro golfers that I have seen use that TGM technique are Bryson DeChambeau and Brian Gay. The question is why do so few professional golfers use that swing technique? My theory is that it relates to two factors. First of all, I think that is biomechanically more uncomfortable to use a mid-palmar left hand grip, which significantly limits left wrist mobility. I think that most pro golfers prefer to use a low palmar grip pattern, or a finger grip pattern, for their left hand grip, which gives them greater wrist mobility at the expense of control. They stand at address with a larger accumulator #3 when they stand with their left arm hanging down more vertically while their clubshaft is positioned on a much shallower plane. They acquire more control of their club during their downswing/early followthrough by allowing their left arm to extend more outwards away from their body so that their hands are slightly higher at impact and by allowing their left wrist to ulnar-deviate (in response to the outward pull of the centrifugally releasing club) so that they have a smaller accumulator #3 angle at impact (compared to address). Pro golfers are amazingly skillful at repeating their left arm/left wrist motion from swing-to-swing so that they can consistently repeat their impact alignments (while using a DH-hand release action) - even though their impact alignments are indeed very different to their address alignments. The second reason is that pro golfers want to use a much more active pivot action in order to generate more swing power (greater clubhead speed at impact) so that they can drive the ball farther, and they often come into impact with a very open pelvis/thorax and a significant amount of right lateral bend. Consider Dustin Johnson at address/impact. Note how much Dustin Johnson's pelvis is open at impact. He also has open shoulders and a lot of right lateral bend. Moe Norman had very little pelvic motion during his downswing and he came into impact almost square to the ball-target line. His pivot action was far less powerful than Dustin Johnson's pivot action - although it is obviously more back-friendly because he is not torquing his spine as much. Kirk (in his personal swing) uses a non-rotary pelvic motion with a pelvic sliding action and he doesn't seemingly use his right-sided right lateral pelvic rotator muscles to initiate his pelvic motion at the start of the transition. His pelvic motion looks very sluggish and it is not conducive to generating a lot of swing power (like Dustin Johnson, Rory McIlroy and Thomas Pieters). Kirk's claim that the club squares up automatically is not true - he still has to use a PA#3 release action in his late downswing in order to get a square clubface at impact. By the way, I noticed that Kirk uses a non-DH Hand release action (flipping subtype) rather than a DH-hand release action. Jeff.
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Post by dubiousgolfer on Apr 29, 2017 12:49:08 GMT -5
Dr Mann - many thanks for that in depth analysis.
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