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State-dependent corrective reactions for backward balance losses during human walking
http://hdl.handle.net/2237/20763
http://hdl.handle.net/2237/20763727e34df-3c55-48d3-8275-aee9dc38d8da
名前 / ファイル | ライセンス | アクション |
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HumMovSci2011.pdf (2.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-11-11 | |||||
タイトル | ||||||
タイトル | State-dependent corrective reactions for backward balance losses during human walking | |||||
言語 | en | |||||
著者 |
Kagawa, Takahiro
× Kagawa, Takahiro× Ohta, Yu× Uno, Yoji |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | This is the author's version of a work that was accepted for publication in Human Movement Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Human Movement Science. v.30, n.6, 2011, p.1210-1224, DOI:10.1016/j.humov.2011.03.003. | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Bipedal locomotion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Backward balance losses | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Body center of mass | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Phase resetting | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We investigated corrective reactions for backward balance losses during walking. Several biomechanical studies have suggested that backward falling can be predicted from the horizontal position and velocity of the body center of mass (COM) related to the stance foot. Our hypothesis was that corrective reactions for backward balance losses depend on whether the body moves forward or backward after a perturbation. Using a split-belt treadmill, backward balance losses during walking were induced by rapid decreases of belt speed from 3.5 km/h to 2.5, 2.0, 1.5 and 1.0 km/h. We measured kinematic data and surface electromyography (EMG) during corrective reactions while walking on the treadmill. Phase portrait analysis of COM trajectories revealed that backward balance stability was decreased by the perturbations. When the perturbed belt speed was 1.0 km/h, the COM states at toe-off were significantly lower than the stability limit; a rapid touch-down of the swing foot posterior to the stance foot then occurred, and the gait rhythm was modulated so that the phase advanced. EMG recordings during perturbed steps revealed a bilateral response, including modulation of the swing leg during the recovery. For weaker perturbations, the swing foot placements were anterior to the stance foot and there was a phase delay. In contrast to the bilateral responses for stronger perturbations, unilateral EMG responses were observed for weaker perturbations. The differences in joint kinematics and EMG patterns in the unperturbed swing leg depended on the COM states at toe-off, suggesting the existence of different responses consisting of ongoing swing movements and rapid touch-down. Thus, we conclude that corrective reactions for backward balance losses are not only phase-dependent but also state-dependent. In addition, the control system for backward balance losses predicts the feasibility of forward progression and modulates swing movement and walking rhythm according to backward balance stability. | |||||
言語 | en | |||||
出版者 | ||||||
出版者 | Elsevier | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.humov.2011.03.003 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0167-9457 | |||||
書誌情報 |
en : Human Movement Science 巻 30, 号 6, p. 1210-1224, 発行日 2011-12 |
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著者版フラグ | ||||||
値 | author | |||||
URI | ||||||
識別子 | http://dx.doi.org/10.1016/j.humov.2011.03.003 | |||||
識別子タイプ | DOI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/20763 | |||||
識別子タイプ | HDL |