2021 Fiscal Year Final Research Report
A Study on the Functional Restoration of the Severely Walking-Disabled Persons Using the Cycling Wheelchair and Sacral Surface Electrical Stimulation
| Project/Area Number |
18K12050
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 90110:Biomedical engineering-related
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| Research Institution | Tohoku University |
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Principal Investigator |
Handa Yasunobu 東北大学, 医学系研究科, 名誉教授 (00111790)
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| Co-Investigator(Kenkyū-buntansha) |
関 和則 東北大学, 医学系研究科, 大学院非常勤講師 (20206618)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Keywords | 仙骨・胸椎間表面電気刺激 / 仙骨表面電気刺激 / 歩行速度 / 歩行障害者 / 足こぎ車いす |
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| Outline of Final Research Achievements |
The effect of the 11th thoracic-sacral surface electrical stimulation (T-SES) on the gait propulsion function was compared with the single surface stimulation of the sacrum and the 11th thoracic vertebra (SES, T11ES, respectively). As a result, the maximum walking speed and maximum pedaling wheelchair running speed were the fastest in T-SES for both healthy and disabled people. The TUG of T-SES was shortened in half of the healthy people and all the walking disabled people. In addition, TUG was shortened 3 months after the introduction of T-SES training compared to before the introduction in the walking disabled. In the spinal alignment CT analysis, the sacral anteversion angle was the largest in T-SES. No lower limb muscle discharge was observed without stimulation, and T-SES induced muscle discharge of the humstrings. It is possible that the combined simultaneous stimulation of SES and T11ES activated the spinal cord gait-related circuit.
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| Free Research Field |
リハビリテーション医工学
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| Academic Significance and Societal Importance of the Research Achievements |
仙骨（SES)と第11胸椎（T11ES)を組み合わせた同時表面電気刺激が、それぞれの単独刺激に比しより歩行推進効果をもたらすことが判明した。これは仙骨神経根求心性線維活動が脊髄を上行して脊髄歩行関連回路（CPG)に入力するとともに、T11ESにより第2腰髄にあるCPGを直接刺激することによる相乗的CPG賦活効果が得られたものと思われる。このことは従来の学説に新しい知見を加えたものであり学術的意義は高い。
また、臨床医学的にT-SES訓練により歩行障害者の歩行推進機能を高めることが判明しており、その臨床医学的、社会学的意義は大きい。
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