Evaluation of Fast Twitch Activity Utilizing Multi-Channel Surface EMG

Abstract

It is significant to evaluate the recruitment of fast twitch fibers quantitively in means of preventing sarcopenia. In a previous study, m-ch method was proposed to observe propagation wave which originates from action potential of each muscle fiber. In this study, relation between strength of muscle contraction and propagation wave had been examined in purpose of evaluating recruitment of fast twitch fibers during training. The result suggests that most propagation waves acquired band's velocity has increased by increase of muscle contraction strength. There is a hope for evaluating recruitment of fast twitch fibers during training.