G2300102 テニスのサービスボールバウンド時の地面反力及び回転トルク計測の試み

抄録

The purpose of this study were to measure the ground reaction force and torque of ball in service ball bound and to investigate the index for the performance of tennis serve. To perform these purposes, following results were performed; 1) The ground reaction force of the ball and the rotary torque when a serviced tennis ball bounced were measured using a force platform. 2) For one of this result, about 350N of ground reaction force toward vertical direction and 50Nm toward ball driving direction were confirmed. 3) Ground reaction force to the vertical direction will be the power of the service, and it may be the parameter to evaluate a service performance (without the unit) of no dimension until now. In addition, the rotary torque of the service driving direction is regarded as a parameter about the power of the service for the speed, too. Furthermore, y direction, the torque of the z direction are regarded as the index indicating the change (kinking) of the ball course, and these results can be hopeful to the general performance evaluation of the service performance. 4) It is thought to be important to construct the experiment setting which is near by the real tennis game condition in future.