| Project/Area Number |
25560325
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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 | National Institute of Fitness and Sports in Kanoya |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
金久 博昭 鹿屋体育大学, 理事, その他 (50161188)
宮本 直和 鹿屋体育大学, スポーツ生命科学系, 准教授 (20420408)
高井 洋平 鹿屋体育大学, スポーツ生命科学系, 准教授 (20574205)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 筋電図 / 運動単位 / 発火頻度 / common drive / 工学 / Kinect / 共収縮 / トレーニング / 音フィードバック / 関節角度 / 生体信号 / Kinectセンサ / 相互相関関数 / 脊髄反射 / 信号処理 / コンピュータ・ミュージック / 単一筋 |
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| Outline of Final Research Achievements |
The aim of the study was to examine the temporal correlation between rectified EMG and instantaneous MU discharge rate in low frequencies. Healthy young subjects produced steady submaximal force with their right finger. Surface EMG and fine-wire MU potentials were recorded from the first dorsal interosseous muscle in the right hand. Rectified surface EMG and the instantaneous discharge frequency of MUs were smoothed by a Hann-window of 400 ms duration. In each of the identified MUs, the smoothed MU discharge frequency was positively and temporally correlated with the rectified-and-smoothed EMG as confirmed by the distinct peak in cross correlation function. The results indicated that the low-frequency component of rectified surface EMG provide temporal information on the low-frequency oscillations in the MU discharge frequency.
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