| Project/Area Number |
24650386
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Sports science
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| Research Institution | Okayama University |
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Principal Investigator |
NAKAMURA Takao 岡山大学, 保健学研究科, 准教授 (00249856)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | インピーダンス / 高時間分解能 / Cole-Cole円弧 / 投球動作 / 判別分析 / 生体電気インピーダンス |
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| Outline of Final Research Achievements |
We have developed a measuring system of frequency characteristics of bioelectrical impedance with high time resolution and proposed the discrimination method for six forearm motions. The purpose of this research was discrimination of throwing motion of baseball. The four throwing motions were as follows: ① natural pronation, ② excessive pronation, ③ excessive spination and ④ hyperextension of elbow. In order to obtain higher hitting ratio of discrimination of four throwing motion, the optimal potential electrode location were the wrist joint side of a flexor carpi radialis muscle and 25 parameters of impedance parameters during throwing were used. As the results, the 96.7% of hitting ratio were obtained in 120 throwings of three subjects.
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