Post by imperfectgolfer on Oct 28, 2018 13:03:13 GMT -5
Tyler Ferrell, like most golf instructors, advocates a shift-rotation motional pattern of pelvic motion at the start of the downswing where the pelvis shifts laterally before the pelvis rotates. Tyler Ferrell states that he wants to have 70% of the COP measurement under the left foot by P5 (which is usually when the pelvis becomes square to the ball-target line in most pro golfers).
The COP readings are in a white font in that light-grey area, but they are difficult to see so I have repeated the COP readings in a larger white font in the black area.
I have advocated a different approach, which I call the "pro golfers" pattern of pelvic motion, where a golfer must weight-pressure load the right foot at the start of the downswing so that activation of the right-sided lateral pelvic rotator muscles can rotate the pelvis away from the weight-pressure loaded right leg/foot - and I believe that pelvic rotation must precede any lateral shift of the pelvis. However, my lack of access to COP measurements has prevented me from proving that pro golfers use my recommended pelvic motion technique.
Fortunately, I have now found a video providing me with the necessary "proof".
The video is an analysis of Luke List, who presently has the highest average driving distance in the PGA tour. See - www.pgatour.com/stats/stat.101.html
Watch their discussion about Luke List's "balance".
Note that they have both missed the most important information contained in that video.
Note that they have both missed the most important information contained in that video.
The COP readings are in a white font in that light-grey area, but they are difficult to see so I have repeated the COP readings in a larger white font in the black area.
Image 1 is at P4. Note that Luke List has 80% of his COP measurement under his right foot and 20% under his left foot.
Image 2 is when he starts his downswing's pelvic rotation. Note that he has 85% of his COP measurement under his right foot and 15% under his left foot.That means that he is actually increasingly weight-pressure loading his right foot as he starts the downswing's pelvic rotation.
Image 3 is fractionally later. Note that he still has 85% of his COP measurement under his right foot and 15% under his left foot. Note how much he has rotated his pelvis counterclockwise between image 1 and image 3.
These images finally provides "evidentiary proof" for my assertion that the optimum pelvic rotation technique (pro golfers technique using the right-sided lateral pelvic rotator muscles) requires that a golfer maintain (or even increasingly) weight-pressure load the right foot at the start of the downswing.
Image 4 shows him reaching the end of the hip-squaring phase, which happens earlier than P5 in his very efficient pelvic rotary technique. Note that he still has 76% of his weight-pressure under the right foot and only 24% under the left foot. By contrast, Tyler Ferrell states that a golfer should have 70% of the COP measurement under the left foot by the end of his hip-squaring phase.
Image 2 is when he starts his downswing's pelvic rotation. Note that he has 85% of his COP measurement under his right foot and 15% under his left foot.That means that he is actually increasingly weight-pressure loading his right foot as he starts the downswing's pelvic rotation.
Image 3 is fractionally later. Note that he still has 85% of his COP measurement under his right foot and 15% under his left foot. Note how much he has rotated his pelvis counterclockwise between image 1 and image 3.
These images finally provides "evidentiary proof" for my assertion that the optimum pelvic rotation technique (pro golfers technique using the right-sided lateral pelvic rotator muscles) requires that a golfer maintain (or even increasingly) weight-pressure load the right foot at the start of the downswing.
Image 4 shows him reaching the end of the hip-squaring phase, which happens earlier than P5 in his very efficient pelvic rotary technique. Note that he still has 76% of his weight-pressure under the right foot and only 24% under the left foot. By contrast, Tyler Ferrell states that a golfer should have 70% of the COP measurement under the left foot by the end of his hip-squaring phase.
Jeff.