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Re: Nice Try..Now learn something!


Posted by: tom.guerry (tom.guerry@kp.org) on Fri Feb 14 13:05:26 2003


Dan and the Teacherman?
>
> Please print this so you can read it two or three times.....
>
> Thank you for showing that you can't see with your eyes what is really happening even in the slow motion or quicktime viewing of the swing you suggest.
>
> A loss of balance occurs when an individual no longer controls controls where they are in time or space with relationship to the ground or an object on which they are standing. This can occur in the swing when the weight is transferred to the front or back of the front foot or to the front or back of the rear foot. Lower body stability can be affected by the strength and flexibility of the hamstrings and glutes. If the glutes or hamstrings are in a position where they are unlikely to complete a solid contraction (back leg bend or internal rotation of the back leg) the glutes and or hamstrings are unable to perform their job of stabilization of the body during the swing.
>
> When Mark starts his swing, his hips begin to rotate after a linear shift in weight, and he activates the internal rotation of his back leg. This is evidenced by the direction of his back knee moving towards the pitch, and the closing of the gap from his between the inside of both his thighs. (True hip rotation (not leg rotation) occurs when the glutes contract). Biomechanical Kinesiology 301.
>
> When Mark's back foot (heel) lifts of the ground nearly to the point when his on the tip of his toes he is off balance. This instability is obvious to Mark as at that point he firmly drives the weight into the heel of his front foot. This causes the toes of his front foot to come up...in case you missed that part. (sending his body weight backwards!!!!!!). This is done while he attempts to simultaneously extend the back leg at the hip while still on the front of his back foot. If you don't believe this is an off-balance position (spread your feet get into his finish position and lift the toes on your front foot, while simultaneously lifting the heel of your back foot. You can even try to do it will swinging a bat and see if you have enough strength to do it. Oh and don't forget to lean your upper torso back about 25 to 30 degrees, because that where he is. And you will see that...as I stated in my previous posting....He is strong enough to get away with it.
>
> Unfortunately, I do not have a perfect swing to show and neither do you. While I have many swings that are much closer to the correct sequencing, acceleration/deceleration, bat rotational or angular speed, wrist angle, and many other components of the body.
>
> The next thing you guys will be trying to tell me is that his lead arm doesn't bar as he starts his swing.
>
> Please review your swing closer before you start to take shots and me and our research. Definitely before you begin to celebrate.
>
> The data and our findings does not lie. And we certainly can't fake it like some people out there. As I have stated before...Jack is on the right track...If you have any common sense you'll begin to listen to him and change your way of thinking. Challenge is good...and questions are great...But as an instructor and educator of thousands....Your questions should be geared towards promoting an opportunity for you to learn...You won't get to Ah-Ha me or Jack, and most of what Epstein says as well. If you are someone who works with kids, just try to get the most knowledge you can and help them to grow. if you have kids that are strong, explosive, and flexible at the same time...model them after who ever you want.
>
> By the way, Mark's back problems were caused by excessive VIBRATION to the muscles stabilizing his pelvis and lumbar spine the muscles that connect his back to his hip), causing constant spasms and microtears.
>
> A_________!
>

Zig-

Your reaction is typical of people who have a deep unacknowledged uncertainty about what they are saying.I doubt it's appropriate to assume you Jack or Mike or anyone is right to the degree you seem to think you are.

Personally,I don't see how your video/software stuff can create this degree of uncertainty without an underlying "tractable"(as Adair might say) swing model.

Causation is still a tricky thing.I think you may sometimes be mistaking reactive forces for the more active ones.

Still,you certainly have a lot to offer as long as you make an effort to keep some distance betwen yourself and your ideas.Easier said than done.


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