| Project/Area Number |
25871146
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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 |
Developmental mechanisms and the body works
Sports science
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| Research Institution | Joetsu University of Education |
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Principal Investigator |
MATSUURA Ryouta 上越教育大学, 学校教育研究科(研究院), 准教授 (10551278)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 筋疲労 / 努力感 / 運動誘発電位 / ラテラリティ |
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| Outline of Final Research Achievements |
The purpose of this study was to examine relationship between changes in motor cortical excitability in non-fatigued muscle after muscle fatigue and force output based on sense of effort in the non-fatigued muscle. At rest, corticospinal excitability in non-fatigued lower limb changed after muscle fatigue elicited by unilateral handgrip. In contrast, corticospinal excitability in the non-fatigued lower limb did not change when the non-fatigued muscle was contracting after muscle fatigue by unilateral handgrip. However, when the non-fatigued muscle was active, corticospinal excitability was positively correlated with force output based on fixed sense of effort. Therefore, it is suggested that input-output properties when contracting muscle determine force output based on fixed sense of effort in non-fatigued lower limb after muscle fatigue elicited by unilateral upper limb.
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