ABSTRACT
Since every human movement is governed by a unique equation of motion, dynamical analysis based on an equation of motion for the whole body system can be a highly effective method for understanding complex multi-joint motions such as jumping, running and throwing. Although some studies have investigated the contributions of joint torques, motiondependent torques and gravitational forces to segment distal end-point velocities by applying equations of motion for actions such as kicking (Putnam, 1991) and throwing (Naito et al., 2006), they have limited their analysis to lower or upper limbs only. For actions such as running and jumping the horizontal and/or vertical velocities of the whole body CG are of crucial relevance for performance evaluation. However, most likely due to the difficulty in deriving such equation, no study employing an equation of motion for the whole body has been seen for the analysis of sports motions.
