| Project/Area Number |
18K17908
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 59030:Physical education, and physical and health education-related
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| Research Institution | Shijonawate Gakuen University |
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Principal Investigator |
Aoki Osamu 四條畷学園大学, リハビリテーション学部, 教授 (50637535)
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| Project Period (FY) |
2018-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 前庭電気刺激 / ノイズ / バランス / 脳卒中 / 前庭誘発電位 / ノイズ前庭電気刺激 / ヒラメ筋 / 立位 / 誘発筋電 |
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| Outline of Final Research Achievements |
In the post stroke patients, we compared the amplitude of the short latency of the vestibulo-spinal reflex (VSR) from the soleus and tibialis-anterior muscles between some stimulus intensities. As a result, 60% sub-threshold intensity showed the largest amplitude.
We also investigated the intervention effect of the noisy galvanic vestibular stimulation (GVS) for the VSR. The short VSR showed greater values at the post-intervention than that at the pre-intervention. There were no differences between noisy GVS and no GVS at the post-intervention. Although there were no intervention effects in the voluntary maximum displacement of center of pressure (max-COP) during cross test, the max-COP showed larger value with noisy GVS than without GVS.
In conclusions, the temporary noisy GVS was enlarge the VSR, and an intervention had an effect for maintaining the VSR potentiation. In contrary, this intervention effect was not sustained for a week and was little for dynamic postural balance.
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| Academic Significance and Societal Importance of the Research Achievements |
本報告ではノイズ前庭電気刺激により前庭脊髄路の興奮性が増大することを明らかにし、このことが静的立位バランスを改善させる要因である可能性を示した。この点において、本報告は学術的な意義を持つ。また、ノイズ刺激を治療介入に用いることで、前庭脊髄路の興奮性が変化することをはじめて示した。しかし現在のところ、動的バランスに対する改善効果を認めなかったという点において、この手法を実用化させることができず、社会的意義が十分ではないと考える。
今後、動的バランスを改善させるための介入を模索し、学術ならびに社会的意義をさらに高めたい。
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