短距離走における曲走路への進入局面での力学量変化

抄録

The purpose of this research was to investigate a kinematic and kinetic change at approach to curved path in sprinting. Curved sprinting acquire centripetal force. In order to produce centripetal force in the curved sprinting, leaning trunk is necessary at the approach phase. Obviously, the centripetal force acting on the runner must be the lateral component of the ground reaction force. The authors conducted the experiment to obtain the ground reaction force and three-dimensional coordinates of the body segments’ markers by the motion capture system on two athletes at the approach phase on the curved path (radius:38.2m). The lateral component of the ground reaction force was changing three steps before entering curved path. Once the body leaned, posture changed due to the lateral direction component of the ground reaction force.