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Post by dubiousgolfer on Aug 31, 2023 11:00:07 GMT -5
I was looking at this Swing Catalyst video and was interested in seeing the graphs for Bryson (from 2:50 time point). At P4-P4.5 , here are his graphs: If you look at the magnified images at P4 and P4.5 and just draw the horizontal components towards/away from the ball-target line , you can see that he seems to be using progressively more push force with his left foot . Basically , he's pushing into the ground towards the ball-target line more with his left foot than pulling his right foot away from the ball-target line. The reaction force to his left foot push is that blue vector , while the reaction force to his right foot pull is the red vector. Looks like Bryson is much stronger using his left foot to help create torque in his early downswing from P4-P4.5. DG
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Post by imperfectgolfer on Sept 1, 2023 9:47:45 GMT -5
I was looking at this Swing Catalyst video and was interested in seeing the graphs for Bryson (from 2:50 time point). At P4-P4.5 , here are his graphs: If you look at the magnified images at P4 and P4.5 and just draw the horizontal components towards/away from the ball-target line , you can see that he seems to be using progressively more push force with his left foot . Basically , he's pushing into the ground towards the ball-target line more with his left foot than pulling his right foot away from the ball-target line. The reaction force to his left foot push is that blue vector , while the reaction force to his right foot pull is the red vector. Looks like Bryson is much stronger using his left foot to help create torque in his early downswing from P4-P4.5. DG I think that having the lead foot's torque vector being stronger than the trail foot's torque vector between P4 => P5 makes sense to me because one wants to rotate the lead hip joint back towards the tush line while keeping the trail buttock against the tush line. That also also allows the trail-sided lateral pelvic rotator muscles to be muscularly active in helping the pelvis rotate counterclockwise between P4 => P5 while avoiding any premature hip spinning motion where the trail buttock prematurely leaves the tush line.
Jeff.
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Post by dubiousgolfer on Sept 1, 2023 10:05:31 GMT -5
Many thanks Dr Mann
DG
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