出版社：Japan Society of Physical Education, Health and Sport Sciences
摘要：The pose and the variation of the center of gravity during sarjant jump were studied by movie reels. The muscles used and its movement were examiend by the electromyogram, the jump power by the strain gauge. The poower to go up is most high between one third and one half in the first half of the jump and it is due to the extension of the knee-joints and the thigh-joints. The ankle joints do not have much importance as thonght to be. Main muscles which move in extension of the thigh-joints are m, gluteus medius and m. gluteus maximus. M. vastus mediales is principal mover in extension of the knee-joints.
