| Project/Area Number |
23700785
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Sports science
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| Research Institution | Kanagawa University |
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Principal Investigator |
KINUGASA Ryuta 神奈川大学, 人間科学部, 准教授 (10409378)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Keywords | 関節の動作不全 / 筋腱の挙動 / 高齢者 / MRI |
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| Research Abstract |
The purpose of the present study was to elucidate a dysfunction mechanism of ankle plantar- and dorsi-flexion movements in elderly people. It was revealed that during phase of plantarflexion, elderly people also have provides an opportunity for mechanical amplification of the shortening of the plantarflexor muscles, resulting in a greater displacement of the tendon’s insertion on the calcaneus as compared to its origin. Age-related difference was pronounced at the site of the calcaneus, the difference in the degree of the Achilles tendon curvature was considered as one of the factors. Smaller range of motion of the ankle plantarflexion in elderly people may not only be due to an increased stiffness of the tendon and muscle, but also less displacement of the calcaneus excursion associated with small amount of Achilles tendon curvature.
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