Abstract
The purpose of this study was to examine the speed of the tips of swords, angles of joints and their angular velocity by investigating the techniques of Coup de jetage, a Fleuret touche movement using the bent of the sword which were performed by skilled fencers in order to understand the kinematic characteristics of the technique of Coup de jetage. The subjects of this study were skilled nine male fencers who have international competitive experience (12.3±3.6year athletic career,20.8±2.8 years old,169.1±4.2 cm in height and 64.4±4.3 kg in weight). In this study, the Coup de jetage was performed five times by each subject against a target mannequin, followed by a three-minute rest, then they performed a Coup de jetage-fante five times. Each trial was shot with a high-speed camera to determine the speed of the sword tip, the joint angular displacement and the joint angular velocity as measurement items. As a result, their Coup de jetage was divided into the following two types of movements. (1) The maximum value of the angular velocity increased from the extension of the elbow joint to the ulnar deviation of the wrist joint and the sword was bent by breaking the ulnar deviation of the wrist joint. (2) The maximum value of the angular velocity was the highest at the elbow joint between the extension of the elbow joint and the ulnar deviation of the wrist joint and the sword was bent by breaking the extension of the elbow joint and the ulnar deviation of the wrist joint.
