| Project/Area Number |
19300213
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Sports science
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| Research Institution | University of Tsukuba |
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Principal Investigator |
FUJII Norihisa University of Tsukuba, 大学院・人間総合科学研究科, 准教授 (10261786)
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| Co-Investigator(Kenkyū-buntansha) |
AE Michiyoshi 筑波大学, 大学院・人間総合科学研究科, 教授 (10175721)
YOKOZAWA Toshiharu 独立行政法人日本スポーツ振興センター, 国立スポーツ科学センター, 契約研究員 (80400670)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2009: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2008: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2007: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
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| Keywords | 筋力推定 / 筋骨格モデル / 最適化計算 / 運動規範 / 目的関数 / 3次元動作分析 / 着地動作 / 不静定問題 / 跳躍動作 / 歩行動作 / 走動作 |
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| Research Abstract |
The selection of appropriate optimization criteria, i.e.objective functions, has been discussed over a long period in the literature. In a lot of researches, the sum of cubed active states of muscle models (activations) of all muscle models was minimized for estimating muscle force. However, it was inferred that the sum of the cubed activations is not always the best criterion. The sum of squared activations was the best for slow-walk speed, the sum of cubed muscle forces for slow-jog speed, and the sum of 4^<th>-powered activations for fast-jog speed. Similar results were obtained for vertical jump, standing long jump, and landing motions. It is considered that the human locomotion is not controlled by a single criterion, but by various criteria according to the locomotion speeds and subjective efforts.
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