MOMENTA OF BODY SEGMENTS CONVERTED INTO IMPACT FORCE OF A REAR HAND STRAIGHT PUNCH INTO AN UNFIXED TARGET

Abstract

INTRODUCTION: When top-class martial artists such as champion kickboxers threw a rear hand straight punch with maximum effort into a target fixed on a wall, the contribution of the momentum of the throwing limb to an impact force or an impulse to the target was about 60% (Yoshihuku,1987). Yoshihuku (1995) suggested that the contribution of the momenta of the other body segments reduced when the punch was thrown into an unfixed target. The purpose of this paper was to clarify the contribution of the momentum of the throwing limb to the impulse when the punch was thrown into an unfixed target similar to the human head.