紀要論文 健常者の車いす上り坂走行動作に及ぼす身体動作制限の影響
Effects of physical movement restriction of able-bodied subjects on behavior incurred while ascending on ramps by a wheelchair

三上, ゆみ  ,  中村, 孝文  ,  田内, 雅規

内容記述
健常者に障害を模した動作制限を課して車いすによる上り坂走行をおこなった場合の動作に及ぼす影響を検討した。C8-T1レベルの脊髄損傷を想定して体幹の固定と足底を浮かせる動作制限を健常者に課し、車いすで上り坂を走行する際の動作、トルク、筋電図を測定した。その結果、制限を加えると①ハンドリム駆動時間が長くなること、②ハンドリムの把持位置を後ろにとる動作範囲が減ること、③体幹筋活動は抑制されること、④下肢関節角度を固定して後方転倒防止のバランスをとる代償動作をすることが分かった。これらより、今回の運動制限により筋活動の抑制も見られるが、同時に代償行動も生じていることが示唆された。
This study examined how the movements of able-bodied people using wheelchairs to travel up an incline were affected by the physical movement restriction that mimicked those caused by a disability. Movement restrictions were imposed on five subjects by immobilizing their trunks and lifting their feet to mimic the mobility effects of C8-T1 level spinal cord injuries; their movements, torque, and electromyography were then measured as they traveled up an incline in a wheelchair. The results showed that when these restrictions were added (1) subjects spent more time pushing the handrims, (2) the range of positions in which they were able to grasp the handrims behind themselves decreased, (3) activity in the muscles of the trunk was inhibited, and (4) subjects immobilized their leg joints for balance to prevent falling backwards. These findings demonstrate that while the mobility restrictions caused some inhibition of muscle activity, they also produced substitute behaviors at the same time.
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https://oka-pu.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2246&item_no=1&attribute_id=22&file_no=1

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