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Muscle Activity Analysis in Vertical Jump by Direct Dynamics Simulation with Musculo-Skeletal Model

2011; Japan Society Mechanical Engineers; Volume: 77; Issue: 777 Linguagem: Inglês

10.1299/kikaic.77.1686

0387-5024

Atsushi FUKUZUMI, Shoichiro TAKEHARA, Kazunori HASE, Takuya Yoshimura,

Robotic Locomotion and Control

In this study, the vertical jump is examined as a basic study of jump. And we examine the influence of each muscle of the human body in vertical jump. The human body is modeled as four rigid bodies and analyzed in detail by using the model that includes muscles of the leg. In this research, the mechanism of jump is discussed by using numerical model to which the concept of multibody dynamics and biomechanics is adapted. We performed the experiment of jump and observe the feature behavior of vertical jump. Experimental results show that the angle of each body becomes vertical for ground and the change of the foot angle is small. Then we perform the numerical simulation referring to this experimental data. In order to reduce the amount of calculation, we calculate muscular activity level by correlating it with fewer parameters. We discuss which muscles are necessary for vertical jump. It is found that vasti exerts the biggest power and gluteus maximus has the highest state of normalized muscle activity.