A biomechanical approach to the evaluation of sports techniques

INTRODUCTION Although various methods have been proposed and used to evaluate sports techniques, one of the frequently used methods is to compare a player’s motion to be evaluated with some models. However, the problem is to detect how much differences there are between them and to examine significances of the differences detected. Assuming, averaged motion of skilled players, called (the standard motion (Ae et al., 1997)) as a model technique, we attempted to quantify motion deviation from the standard motion and to examine whether motion deviation or variability can be used to evaluate sports technique.