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Post by dubiousgolfer on Oct 4, 2020 9:48:05 GMT -5
Dr Mann
What do you think about this Jim Waldron video?
It does seem to tie in from a 'Kinetics Perspective' how the right arm can apply a push action across the club at P4. It also seems to make some sense about keeping the right elbow more in front of your upper torso and not get stuck behind during the downswing.
So if I've interpreted this correctly , the backswing is almost a 45 degree throwing of the arms over the right shoulder without any feeling of right bicep contraction.
DG
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Post by imperfectgolfer on Oct 4, 2020 10:41:20 GMT -5
Dr Mann What do you think about this Jim Waldron video? It does seem to tie in from a 'Kinetics Perspective' how the right arm can apply a push action across the club at P4. It also seems to make some sense about keeping the right elbow more in front of your upper torso and not get stuck behind during the downswing. So if I've interpreted this correctly , the backswing is almost a 45 degree throwing of the arms over the right shoulder without any feeling of right bicep contraction. DG I disagree with JW's assertion as to the reason why the right elbow bends when he lifts his two arms upwards at a 45 degree angle. I believe that the real reason as to why the right elbow has to fold is due to the fact that i) that he is angling his straight left arm to the right of the midline and ii) he is pronating his lead forearm and iii) he is upcocking his lead wrist. Those motions determine the position of the left palm, and then to get his right palm to remain parallel to his left palm during his backswing action, the right arm has to fold, the right forearm has to supinate, the right humerus has to externally rotate and the right wrist must extend further - with the amount being dependent on whether he has shallow backswing action (like Rickie Fowler) or a very steep backswing action (like Bubba Watson). Here are capture images of Martin Hall performing a backswing action with metal hinges applied to his wrists. If you lift your straight left arm while moving it across to the right side of the body while simultaneously upcocking your lead wrist and also pronating your lead forearm so that you get to the position shown in image 4, then the right elbow is forced to bend and the right forearm must supinate and the right humerus must externally rotate and the right wrist must extend further in order to keep the right palm parallel to the left palm. There is no reason why the right arm should not remain in front of the body during this standard RFT type of backswing action. Pro golfers do not get their right elbow stuck too far behind their upper torso at P4. Jeff.
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Post by dubiousgolfer on Oct 5, 2020 10:30:17 GMT -5
Many thanks Dr Mann
DG
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Post by imperfectgolfer on Oct 5, 2020 16:57:51 GMT -5
Another few comments on how I think that one should mentally visualise/conceptualise the backswing action. Look at this capture image of Martin Hall at a slightly shortened P4 position (image 4). During the backswing from P1 => P4, one should think of lifting the left hand to a position that is well outside the torso, but at the level of the shoulders, while simultaneously rotating the upper torso (shoulders) by ~90 degrees. However, I don't like this capture image of Martin Hall (image 4) because he looks like he is leaning leftwards as a result of using an excessive amount of arch-extension of his mid-upper thoracic spine. I prefer that one use Russell Heritage as an excellent example of how to perform a good backswing action - as seen in his video below. You can ignore what he describes about the right hand helping to pull the left hand upwards, and instead read my descriptions of the following capture images of Russell Heritage performing a good quality backswing action. Image 1 is at address and image 2 is at the P4 position. Note that I have drawn an "X" in image 1 at the imaginary destination point where the hands should be situated at P4 - which is about 12-15" outside the torso and vertically above a point on the ground that is just behind the heels. That point should end up to be opposite the right shoulder at P4 if the shoulders rotate 90 degrees between P1 => P4. That imaginary destination point can be further away from the ball-target line if one has a long lead arm relative to the width of the upper torso at shoulder level.
When thinking of how to get the left hand to that destination point, one should think of elevating the left arm while moving it away from the target so that the left hand ends up about 12-15" outside the torso at P4. When elevating the left arm, one will be pronating the lead forearm so that the watchface can face skywards at the P4 position and one will also be upcocking the lead wrist so that the left arm-clubshaft angle at P4 will be ~90 degrees.
While one is moving the left arm as described, think of rotating the upper torso like Russell Heritage. Note that he still has rightwards tilt of the upper torso (and upper thoracic spine) and he is not using an arch-extension maneuver to pull himself towards the center. Note that his head is behind the ball at P4 as a result of using a rightwards-centralised backswing action.
Note that the right arm has to accomodate itself to the space between the left hand and the right side of the upper torso at right shoulder socket level, so it should naturally/automatically undergo the following biomechanical actions between P1 => P4 - i) the right elbow will fold; ii) the right humerus will externally rotate; iii) the right forearm will supinate and iv) the right wrist will bend backwards and also upcock into a position of radial deviation. Jeff.
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