2012 Fiscal Year Final Research Report
Functional role of trunk muscles during coordinated upper and lower limb movements
| Project/Area Number |
22500525
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical education
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| Research Institution | Chiba University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 運動制御 / 体幹筋群 / 上・下肢律動運動 / トレーニング |
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| Research Abstract |
This research project was conducted with the aim of revealing the functional and physiological roles of trunk muscles during rhythmic arm and/or leg pedaling in humans. It was found that EMG activity of left and right erector spinae (ES) and abdominal muscles (AB) increased non-linearly with an increase in load and cadence. In addition, with regard to ES and AB muscles of the ipsilateral and contralateral sides, the magnitude of the cutaneous reflexes was strongly facilitated during the power phase compared to those obtained during a sitting position. Finally, we examined how the learning process modulates leg-to-arm interaction; this was characterized by a specific decrease in arm cadence when the leg pedaling was superimposed during arm pedaling. We found that the interaction gradually decreased within 1 to 4 weeks of repetitive training.
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Research Products
(21 results)
