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Posted by: Chris Yeager (yeager@netdoor.com) on Wed Jun 13 19:46:19 2001

What turned you into a kinetic link man???Physics??????Crack the whip baby!!!!!!
> >
> > Hi Chris -
> > Been drinking a lot of coffee this morning?
> > The kinetic chain is how the body gets it done. But I look at the picture (upper left) and don't see a closed/rigid front side. I see a flexed front side, hips already starting to open and getting ready to open more as the front leg torques the front hip back (at the same time the back leg turns over and torques the back hip forward) : both hips turning around the stationary axis of the spine!!!
> > ( and all that AFTER weight shift (notice the trailing shadow figures))
> i don't think the "trailing figures" are trailing figures. i think they are replicants of the front figure. the stride foot hasn't been lifted. everything, - the bat, the head, the hands, the belt, remains at a constant level. batter would have had to slide the stride foot immediately along the ground.
> have always been curious about that picture. not really fair to judge without seeing it in motion. but, first impression was and is that it looks lame. hope it wasn't jack at an early age.
> ray porco

Those trailing figures are obviously replicas and offer no additional information about that swing..I just found it ironic that a site dedicated to discrediting the positive effects of weight shift in the baseball swing would display an image of a batter employing linear mechanics..I would go as far to say that this player will not be able to perform the "ideal" kinetic link..This batter has actually allowed too much weight to move forward before blocking with the front leg and conserving energy to be transferred throuhout the rest of the system..He has also made the mistake of bringing his hands forward with his weight shift..The hands should stay back (lead arm extension)until the hips open (blocking i.e. transferring)which will transfer energy to the shoulders which then open and block, sending energy to the arms which should remain back until this point...All physicists know that the ideal kinetic link produces high bat velocity by the sequential transfer of energy from the stronger and heavier body segments (legs and hips)to the arms and finally the bat. Our friend should continue to employ a strong weight shift with a closed front leg, it is the beginnings of a strong kinetic link..He should work on stronger blocking against the front leg, this will initiate a quick and powerful hip rotation (keep the hands back).... He must also work on gaining lead arm extension during the stride forward/weight shift..

Chris Yeager, Ph.D.


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