Local dynamic stability of the locomotion of lower extremity joints and trunk during backward upslope walking

Wu, Y, Liu, A ORCID: https://orcid.org/0000-0001-9416-1726, Dai, K-R and Gu, D-Y 2018, 'Local dynamic stability of the locomotion of lower extremity joints and trunk during backward upslope walking' , Journal of Motor Behavior .

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Abstract

Backward slope walking was considered as a practical rehabilitation and training skill. However, its gait stability has been hardly studied, resulting in its limited application as a rehabilitation tool. In this study, the effect of walking direction and slope grade were investigated on the local dynamic stability of the motion of lower extremity joints and trunk segment during backward and forward upslope walking (BUW/FUW). The local divergence exponents (kS) of 16 adults were calculated during their BUW and FUW at grades of 0%,5%, 10%, and 15%. Mean standard deviation over strides(MeanSD) was analyzed as their gait variability. Backward walking showed larger kS for the abduction-adduction and rotational angles of knee and ankle on inclined surface than forward walking, while kS for hip flexion-extension angle at steeper grades was opposite. No grade effect for any joint existed during BUW, while kS increased with the increasing grade during FUW. As to the trunk, walking direction did little impact on kS. Still, significant larger kS for its medial-lateral and vertical motion were found at the steeper grades during both FUW and BUW. Results indicate that during BUW, the backward direction may influence the stability of joint motions, while the trunk stability was challenged by the increasing grades. Therefore, BUW may be a training tool for the stability of both upper and lower body motion during gait.

Item Type: Article
Schools: Schools > School of Health and Society > Centre for Health Sciences Research
Schools > School of Health and Society > Centre for Applied Research in Health, Welfare and Policy
Journal or Publication Title: Journal of Motor Behavior
Publisher: Taylor & Francis
ISSN: 0022-2895
Related URLs:
Depositing User: Dr Anmin Liu
Date Deposited: 11 Jan 2019 10:03
Last Modified: 11 Jan 2019 15:06
URI: http://usir.salford.ac.uk/id/eprint/17747

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