岐阜市立女子短期大学研究紀要第60輯（平成23年3月）

抄録

跳馬における跳躍板と選手との力学的相互作用

The interaction between the springboard and the gymnast's body

Abstract

　 In the gymnastic vault, an elastic spring board is used for take-off after approach run. The aims of this study were to investigate interaction between springboard and gymnast's body during take-off motion. The leg spring in the gymnastic vault was stiffer than those observed in other take-off motions with approach run (the long jump and vertical jump with approach run). Ferris and Farley (1997), though they used a hopping motion on the elastic surface, suggested that larger leg stiffness reduce the muscle work thereby saving the energy cost. Arampatzis et al. (2001) also showed that an increase in leg stiffness induced an effective re-use of the store energy in a sprung surface. It can be assumed that large leg stiffness during the take-off in the gymnastic vault enhances the elastic energy storage of the springboard and reduce the absorbed energy by the eccentric contraction of muscles.

Keywords : 体操競技，踏み切り動作，レッグスティフネス，エネルギー

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