スキーにおける下肢の受動および能動的緩衝作用

概要

論文の詳細を見る
Skiers control their stability by pumping their bodies up and down. The dynamic model of a skier traversing an undulant snowy surface was formulated in order to investigate the mechanism of a pumping strategy to minimize the vertical acceleration. A mechanical model of legs was built with a link joint. The muscle was modeled by a contractile element, a series of elastic elements and a damping element. By numerical calculations, the strategies to avoid the separation of the feet from the snowy surface were investigated. The stiffness of the leg is softened by bending the knee ; consequently, the shock can be absorbed passively by deep bending. Up-pumping first increases the pressure against the snowy surface and then decreases it, and down-pumping induces the opposite effect. The shock is also reduced actively by pumping.
社団法人日本機械学会の論文
1991-11-25