Post by dubiousgolfer on Oct 10, 2023 5:26:15 GMT -5
Dr Mann
It seems that Dave Tutelman has torn his trail glute and is testing out SNT .
Here is his article (I haven't read it thoroughly yet).
tutelman.com/golf/swing/stackntilt.php?fbclid=IwAR3OZJ3J7dS1v6AQYlbQ6Xwktt-X6Tzb4L8yE6iIokB3pJ4ESWdeopsAruE
One thing I did notice while doing a cursory read was this excerpt below:
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"So where does the energy come from in S&T? As the picture shows, the hips are not getting much effort from the frictional ground action forces. So they have to be turned primarily by a frictional (horizontal) ground action torque exerted by the lead leg. The lead leg turns forcefully around its axis. With the majority of the weight being on that leg, there is a lot of normal force allowing plenty of torque to drive the swing.
Even so, it probably does not give as forceful a hip turn as the standard swing. With most of the body rotation being driven by lead foot ground reaction torque, we need to look at what muscles provide axial torque to the lead leg. That would be the lateral hip rotator group of muscles, six smaller muscles in the hip -- not a big, powerful muscle like the gluteus maximum. There is still some measure of glute and quad action involved, but it is a lot less than what drives a normal golf swing -- and the combination is also probably a less powerful rotation.
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Isn't DT making a mistake here about using the lead lateral hip rotators , especially if they are contracted while most of the 'weight pressure' is on the lead leg? If he contracted the hip rotators , it would cause the hips to rotate clockwise (from a top view), not anti-clockwise.
Do you think DT using SNT as a remedial swing while his trail glute repairs is a wise strategy for an 82 year old ? I'm unsure whether he and Dr Neal fully understand the impact that SNT might have on the lumbar spine as per your article (extract below).
The key point that a golfer needs to understand about the S&T downswing is that the majority of the left-laterally directed spine movement occurs at the level of the lower spine (lumbar spine) and not at the level of the mid-upper thoracic spine (as occurs in the traditional/conventional swing). That biomechanical fact is the major reason why I would never recommend the S&T swing to a young golfer. There is no doubt in my mind that the S&T swing can work well from a geometrical/mechanical perspective, but I believe that the required biomechanical movements occurring at the level of the lumbar spine are not natural, and I believe that they are likely to predispose to chronic back problems over the long-term (40-60 year time period). What is the basis for my belief that an aggressive lateral thrusting movement occurring at the level of the lumbar spine is not biomechanically natural?
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DG
It seems that Dave Tutelman has torn his trail glute and is testing out SNT .
Here is his article (I haven't read it thoroughly yet).
tutelman.com/golf/swing/stackntilt.php?fbclid=IwAR3OZJ3J7dS1v6AQYlbQ6Xwktt-X6Tzb4L8yE6iIokB3pJ4ESWdeopsAruE
One thing I did notice while doing a cursory read was this excerpt below:
--------------------------------------------------------------------------------
"So where does the energy come from in S&T? As the picture shows, the hips are not getting much effort from the frictional ground action forces. So they have to be turned primarily by a frictional (horizontal) ground action torque exerted by the lead leg. The lead leg turns forcefully around its axis. With the majority of the weight being on that leg, there is a lot of normal force allowing plenty of torque to drive the swing.
Even so, it probably does not give as forceful a hip turn as the standard swing. With most of the body rotation being driven by lead foot ground reaction torque, we need to look at what muscles provide axial torque to the lead leg. That would be the lateral hip rotator group of muscles, six smaller muscles in the hip -- not a big, powerful muscle like the gluteus maximum. There is still some measure of glute and quad action involved, but it is a lot less than what drives a normal golf swing -- and the combination is also probably a less powerful rotation.
---------------------------------------
Isn't DT making a mistake here about using the lead lateral hip rotators , especially if they are contracted while most of the 'weight pressure' is on the lead leg? If he contracted the hip rotators , it would cause the hips to rotate clockwise (from a top view), not anti-clockwise.
Do you think DT using SNT as a remedial swing while his trail glute repairs is a wise strategy for an 82 year old ? I'm unsure whether he and Dr Neal fully understand the impact that SNT might have on the lumbar spine as per your article (extract below).
The key point that a golfer needs to understand about the S&T downswing is that the majority of the left-laterally directed spine movement occurs at the level of the lower spine (lumbar spine) and not at the level of the mid-upper thoracic spine (as occurs in the traditional/conventional swing). That biomechanical fact is the major reason why I would never recommend the S&T swing to a young golfer. There is no doubt in my mind that the S&T swing can work well from a geometrical/mechanical perspective, but I believe that the required biomechanical movements occurring at the level of the lumbar spine are not natural, and I believe that they are likely to predispose to chronic back problems over the long-term (40-60 year time period). What is the basis for my belief that an aggressive lateral thrusting movement occurring at the level of the lumbar spine is not biomechanically natural?
----------------
DG