[biomechanic]

When you see Dr Seaman next ask him who helped with his research on his book on Backswing Dynamics and biomechanics
Where did he get his research from and who did this for him .
The boys I work with helped him with potential injury they did his research he got all this information from our biomedical engineer.

Now I have an understanding, I never said you need a huge shoulders turn and huge hip rotations, I'm well aware of potential injury we measure potential injury and I agree with you. I know huge shoulders rotation and huge hip turns caused huge injuries, but educated hands won't prevent this.
Learning muscular loading and the right body motion for each body segment
does.
People who have these problems is caused by poor body motion and haven't been taught how to acceleration and deceleration each body segment right.
Nor how to load their muscles correctly.

Most people have this problem from the perception of zone 1 and the perception the hips clears left, they don't clear left as much as we think. they don't turn as much as we believe. Plus this is a lack of understands the purpose of the hips in the golfswing and upper body

This is my point here, why does homer speak About 6-m-1,
what is the purpose of this ?
Zone 1 how much should the shoulders and hips turn, on the back swing and downswings ? it's doesn't need to be measured either.
My point body motion is a different world, Zone 1 is an area where the mechanical world lack education but then this is a different field and for this field, should be passed on to people who are expert in this field.

I will be honest here it's a lack of golf coaches understanding of the human body motion which is causing potential injury. But this isn't their field of expertise either so that's ok. It's no fault of theirs. They are mechanics.
Not body motion. there lack of understanding of 6-m-1 and zone 1 is the problem.
educated hands are only as useful as well trained pivot train