| Project/Area Number |
26560352
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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 |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 生体電気インピーダンス / 高時間分解能 / Cole-Cole円弧 / 投球動作 / 判別分析 |
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| Outline of Final Research Achievements |
We have developed a multi-frequency impedance measuring device. This device is sufficiently accurate for measuring bioelectrical impedance parameters and easy to use, portable, and well suited for outdoor use. The purpose of this research was discrimination of types of pitch. The types of pitches were as follows: straight pitch, slider, curve ball and shoot ball.
In order to obtain higher hitting ratio of discrimination of four pitches, the optimal potential electrode location were the wrist joint side of a flexor carpi radialis muscle and 25 parameters of impedance parameters during pitch were used. As the results, the 99.2% of hitting ratio were obtained in 120 pitches.
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