| Popis: |
The purpose of this study were to describe and compare the selected electromyographical muscle activities of arm and kinematic data of kumdo player`s head hitting. Using surface electrode electromyography, we evaluated muscle activity in 6 male players during head hitting motion. Surface electrodes were used to record the level of muscle activity in the carpi radialis, deltoid, triceps, biceps muscles during the player`s head hitting. These signals were compared with %RVC(Reference voluntary contraction) which was normalized by IEMG(Integrated EMG). The kumdo head hitting motion was divided into two phases: back swing, down swing. we observed patterns of arm muscle activity throughout two phases of the kumdo head hiting The results can be summarized as follows: right elbow angle had decreased and left deltoid muscle`s activation had higher than right deltoid muscle`s activation, right carpi radialis muscle`s activation had higher than left carpi radialis muscle`s activation in back swing phase, knee angle had decreased and left triceps muscle`s activation had higher than right triceps muscle`s activation, right deltoid muscle`s activation had higher than left deltoid muscle`s activation, right carpi radialis muscle`s activation had higher than left carpi radialis muscle`s activation in down swing phase |
