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Post by syllogist on Oct 28, 2019 11:11:31 GMT -5
Thank you Dr. Mann.
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Post by dubiousgolfer on Dec 7, 2023 9:30:14 GMT -5
Dr Mann With regard the bolded out section of your comment above , do not COP force plates base their readings on pressure (ie. Force per unit area )? So couldn't the lead foot actually be pressing MORE from a force perspective but on a greater surface area of the ground, while the rear foot could (to all intents and purposes) be actually pressing LESS (from a force perspective) on a much smaller surface area of ground? So depending on the contact surface area between each foot and plate (using the above scenario), the COP reading on the front foot could actually show less than rear foot , even though the force on the front foot was greater than the rear foot (hope that makes sense). The more I think about COP , the less convinced I am about its usefulness in understanding the real dynamics of a golf swing. Regards DG That's a good question about whether the COP measurements are affected by the amount of surface contact area between the ground and foot. I don't know the answer to that question. However, in Justin Thomas' swing, only the forefeet are in contact with the ground near impact and there may not be a big difference in contact area between the right foot and left foot near impact. I personally find COP measurements of no value in understanding the golf swing. Boditrak has hired Sasho MacKenzie to interpret their force plate technology measurements and he is doing a very poor job because he is manifesting surprisingly profound misunderstandings of golf swing biomechanics in his explanations. I have never previously seen Sasho MacKenzie provide such inept explanations, and he is supposed to be a world-renown expert on golf swing biomechanics! Jeff. Dr Mann Just for future clarification but I found out that COP measurements are not related to amount of surface contact. DG
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