野球のピッチング動作における踏み出し脚の運動がボール初速度に与える影響

概要

論文の詳細を見る
This study deals with how stepping leg and waist motion are related to initial velocity, while practicing baseball pitching. Six pitchers belonging to the university baseball team did the actual pitching for this study and were filmed using the direct linear transformation method of three-dimensional (3D) videography. Several factors determine the initial velocity. Toyoshima^<4)> mentions that the sharp rotation of the waist is one of the big factors. Moreover, the importance of the lower limbs is frequently mentioned on the actual coaching scene. The results of this study are mentioned below. 1. The waist changes its motion from advance to rotating 0.1 sec before the foot lands on the ground, and the right trochanter major speeds up by slowing down the left trochanter major while the waist rotates sharply. 2. It is possible to speed up the waist angular velocity by fixing the joints of the knee and the legs when the foot is landing.
中京大学の論文
2001-11-01