Coordination control of the muscles including the bi-articular and mono-articular muscles in the ballistic jump movement.

• Project/Area Number: 21500585
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Sports science
• Research Institution: University of Toyama
• Principal Investigator: TORIUMI Kiyoshi 富山大学, 人間発達科学部, 教授 (60227676)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2011: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 生物・生体工学 / 機械力学・制御 / 制御工学 / 協調制御 / 二関節筋

Research Abstract

The hypothesis that the bi-articular muscle gastrocnemius controls the ground reaction force direction in jumping was constructed by means of the functionally effective muscle model including bi-articular muscle. The relationship between the activities of lower limb muscles and the jump direction was examined by means of electromyogram and computer simulation during the vertical and broad jump. In the result, it was clarified that jump direction was controlled by changing the timing of gastrocnemius muscle activation.