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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

State-dependent corrective reactions for backward balance losses during human walking

http://hdl.handle.net/2237/20763
http://hdl.handle.net/2237/20763
727e34df-3c55-48d3-8275-aee9dc38d8da
名前 / ファイル ライセンス アクション
HumMovSci2011.pdf HumMovSci2011.pdf (2.1 MB)
Item type 学術雑誌論文 / Journal Article(1)
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

WEKO 54332

en Kagawa, Takahiro

Search repository
Ohta, Yu

× Ohta, Yu

WEKO 54333

en Ohta, Yu

Search repository
Uno, Yoji

× Uno, Yoji

WEKO 54334

en Uno, Yoji

Search repository
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 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
内容記述タイプ Abstract
出版者
言語 en
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
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
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
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