muscle contractile behaviour in skillful motions (investigation of mechanism of rapid muscle contraction and rapid muscle relaxation).

本研究旨在探讨快速随意运动前的运动前静默期（PMSP）所引起的肌肉结构变化，以阐明熟练运动中肌肉的收缩行为。本研究发现，膝关节伸展速度随着PMSP的出现而增加。此外，这项研究表明，肌肉结构的变化在PMSP是肌肉放松行为的结果，而不是肌肉拉伸行为的结果。

This study investigated muscle architectural changes that are induced by pre-motion silent period (PMSP) before rapid voluntary movement to clarify muscle contractile behavior in skillful motions. This study found that knee extension velocity was increased with PMSP appearance. In addition, this study suggests that muscle architectural change during PMSP is the result of muscle relaxation behaviour rather than the result of muscle stretching behaviour.