Biosensing mechanical analysis on movement control of sprint running

Abstract

The purpose of this study was to analyze the movement control of the low extremity by using biomechanical model during sprint running and provide the basis for technical analysis and optimization of sprint running. Three dimensional video graphic and Ground Reaction Force (GRF) data were collected from 8 outstanding male sprint runners performing sprint running at their maximum effort. The inter-segmental dynamics was quantified and the kinematics, the ground reaction force were analyzed during a running gait cycle of the maximal speed phase in sprinting. During stance phase, the muscle torques and the ground reaction torques are the main torques that tends to counteract each other for controlling the movement. Due to thigh angular acceleration and hip velocity, the INT has contributions to back swing of leg during later stance phase. It was concluded that during stance phase, the muscle torques and the ground reaction torques are the main torques that tends to counteract each other for controlling the movement. The INT due to thigh angular acceleration and hip velocity has contributions to back swing of leg during later stance phase. During swing phase, segment movement is controlled mainly by active muscle torques and motion dependent torques (due to leg angular acceleration) and their functions were opposite and canceled out.