Discussion about mechanism in jump motion using simple dynamic simulation

Abstract

The higher spike jump amount is created from run-approach and take-off sequence motion. However, some detailed mechanisms are not understood clearly. Therefore, in the present study, I discussed about the generation mechanism of floor reaction force to jump higher. At the first, it is assumed that floor reaction force are created from the kinetic energy of an approach run, floor reaction force is changed to elastic energy, and then elastic energy is changed to initial vertical velocity. At the next, passive control jump simulation was carried out, and it was made clear that elastic energy is changed to "jump motion". Furthermore, it was also showed that "regimental practice for volleyball" is dangerous by using discussion about mass balance.