2002 Fiscal Year Final Research Report Summary
Study on the life fitness in Japanese
| Project/Area Number |
12480007
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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 |
体育学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KANEHISA Hiroaki The University d Tokyo, Graduate School of Arts and Sciences, Assistant professor, 大学院・総合文化研究科, 助教授 (50161188)
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| Co-Investigator(Kenkyū-buntansha) |
KUBO Keitaro The university of Toyko, Graduate School of Art and Scinces, Assistant, 大学院・総合文化研究科, 助手 (70323459)
KAWAKAMI Ysuo The university of Toyko, Graduate School of Art and Scinces, Assistant professor, 大学院・総合文化研究科, 助教授 (60234027)
FUKASHIRO Senshi The university of Toyko, Graduate School of Art and Scinces, Assistant professor, 大学院・総合文化研究科, 助教授 (50181235)
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| Project Period (FY) |
2000 – 2002
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| Keywords | life fitness / muscle mass / muscle strength / muscle power / age-related change / muscle atrophy / site-related difference / exercise program |
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| Research Abstract |
This study aimed 1) to develop a measurement system for assessing muscle mass and function in a large sample, 2) to document the physical working capacity in daily life (life fitness) in Japanese by the use of the system, and 3) to investigate the content of exercise programs required to maintain and/or improve life fitness. The main findings were as the following. 1) Ultrasonograpphic muscle thickness measurement and bioelectrical impedance analysis are useful for estimating accurately the volume of limb muscles. 2) Age-related loss of muscle mass is greater in the lower limb muscles than in the upper limb muscles. Especially, for the knee extensor muscles the age-related loss occurs in the earlier generations as compared to other muscles located in limb. In addition, the abdominal muscle also shows a greater loss with aging with a similar magnitude as observed in the knee extensors. 3) For the lower limb muscles, the influence of aging on the power generation capabilities is greater than that on muscle strength. 4) For elderly women, exercise program with their own body masses as a resistance is effectiveness to improve body composition and power generation capability of lower limb muscles. Moreover, there is a significant correlation between walking step per day and either knee extension torque relative to muscle volume or the bone intensity of calcaneus in elderly women.
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