2013 Fiscal Year Final Research Report
Effect of muscle damage induced by eccentric exercise on bilateral motor deficit and its neurophysiological mechanism
| Project/Area Number |
24700612
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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 |
Physical education
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| Research Institution | Uekusa Gakuen University |
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Principal Investigator |
ENDOH Takashi 植草学園大学, 発達教育学部, 講師 (80510594)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 皮質運動野 / 両手運動 / 両側性機能低下 / 半球間抑制 / 運動誘発電位 / 経頭蓋直流電流刺激 / 経頭蓋磁気刺激 / 筋損傷 |
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| Research Abstract |
The purpose of this study was to clarify the effect of unilateral muscle damage induced by eccentric exercise on bilateral motor deficit, and the mechanism, using electrophysiological measurements, including transcranial magnetic and direct current stimulation (tDCS). We showed that unilateral muscle damage enhanced the bilateral deficit by decreasing maximum voluntary contraction on the damaged and intact sides. In addition, modified interhemispheric inhibition due to increased cortical excitability by tDCS affected two-hand motor function. The results suggest that modified interhemispheric inhibition, which is due to increased cortical excitability by unilateral muscle damage, plays a role in enhanced bilateral motor deficit.
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