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There was a detailed description of a system similar to what you seem to need i
n the November, 1990 issue of the International Journal of Sport Biomechanics (
volume 6, number 4) pages 404-414. You can contact one of the authors, profess
or maury L. Hull at Cal State at Davis for more information. There are systems
that you can purchase, but they are expensive. Good luck.
n the November, 1990 issue of the International Journal of Sport Biomechanics (
volume 6, number 4) pages 404-414. You can contact one of the authors, profess
or maury L. Hull at Cal State at Davis for more information. There are systems
that you can purchase, but they are expensive. Good luck.