Comparison of Dexterity of Baseball Batting based on Variation in Muscle Power of Lower-body

Abstract

Generally, athletes and artisans have a tacit knowledge, which is impossible to tell other persons directly, from a lot of practice and experience. In this paper, we measure a bat swing motion by using 3D motion capturing systems, and analyze a muscle power of a lower limb. In the analysis, we estimated a muscle power of a lower limb of regular players and beginner players in high school baseball by using kinetic analysis systems, at first. And, under assuming that common features of each expert are one of the common elements of the tacit knowledge, extracted common features of each expert players by comparing these data. As a result, we find characteristic differences of muscle power between experts and beginners.