CONTRIBUTION OF THE LOWER LIMB JOINTS IN DIFFERENCE OF POWER OUTPUT FROM REBOUND JUMP

Abstract

This study aimed to perform kinetic analyses of joint movements during rebound jumps and reveal the individual power-output contributions of lower-limb joints. The subjects included 21 male students who were members of a track and field club. Initially, each attempt was considering to comprise five consecutive rebound jumps at six subjective levels of maximum effort: loo%, 90%, 80%, 60%, 45%, and 30%. The subjects performed each attempt twice, and the sequence of attempts was randomized. However, because the subjective effort levels were inconsistent among subjects in the initial analysis, we asked the subjects to attempt rebound jumps to reach at 90%. 80%, and 70% of their maximum jumping heights (1 00%). Our results demonstrated that the degree of contribution was the greatest at the ankle joint for any level of output within the ranges used in this study.