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Slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset

Curvilinear walking is common, causing limb- and radius-dependent asymmetries that distinguish it from straight walking and elevated friction demands that increase slip-and-fall risk. However, it is unclear how aspects of curvilinear walking influence the slip perturbations experienced. We cross-sec...

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Autores principales: Rasmussen, Corbin M., Curtze, Carolin, Mukherjee, Mukul, Hunt, Nathaniel H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9588765/
https://www.ncbi.nlm.nih.gov/pubmed/36274104
http://dx.doi.org/10.1038/s41598-022-21701-7
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author Rasmussen, Corbin M.
Curtze, Carolin
Mukherjee, Mukul
Hunt, Nathaniel H.
author_facet Rasmussen, Corbin M.
Curtze, Carolin
Mukherjee, Mukul
Hunt, Nathaniel H.
author_sort Rasmussen, Corbin M.
collection PubMed
description Curvilinear walking is common, causing limb- and radius-dependent asymmetries that distinguish it from straight walking and elevated friction demands that increase slip-and-fall risk. However, it is unclear how aspects of curvilinear walking influence the slip perturbations experienced. We cross-sectionally examined how three biomechanical slip contexts (slip onset phase, slipped foot relative to the path, path radius) influence slip direction, distance, and peak velocity. Eighteen young adults experienced unconstrained inside or outside foot slips during early, mid-, or late stance while following 1.0- or 2.0-m radius semicircular paths. We derived slip mechanics from motion-capture data and assessed their dependence on slip context using mixed-effects models. As slip onset phase progressed, slip directions exhibited an anterior-to-posterior transition, shortened mediolaterally, and accelerated anteroposteriorly. The slipped foot modified the direction transition, with inside and outside foot slips moving contralaterally and ipsilaterally, respectively. Inside foot slips were shorter and slower mediolaterally and longer anteroposteriorly than outside foot slips. Increasing path radius caused slips with greater mediolateral direction components. We show a range of context-dependent slips are possible, likely due to instantaneous magnitudes and orientations of shear ground reaction forces. Our results contribute to a comprehensive understanding of walking slips, which fall prevention methods can leverage.
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spelling pubmed-95887652022-10-25 Slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset Rasmussen, Corbin M. Curtze, Carolin Mukherjee, Mukul Hunt, Nathaniel H. Sci Rep Article Curvilinear walking is common, causing limb- and radius-dependent asymmetries that distinguish it from straight walking and elevated friction demands that increase slip-and-fall risk. However, it is unclear how aspects of curvilinear walking influence the slip perturbations experienced. We cross-sectionally examined how three biomechanical slip contexts (slip onset phase, slipped foot relative to the path, path radius) influence slip direction, distance, and peak velocity. Eighteen young adults experienced unconstrained inside or outside foot slips during early, mid-, or late stance while following 1.0- or 2.0-m radius semicircular paths. We derived slip mechanics from motion-capture data and assessed their dependence on slip context using mixed-effects models. As slip onset phase progressed, slip directions exhibited an anterior-to-posterior transition, shortened mediolaterally, and accelerated anteroposteriorly. The slipped foot modified the direction transition, with inside and outside foot slips moving contralaterally and ipsilaterally, respectively. Inside foot slips were shorter and slower mediolaterally and longer anteroposteriorly than outside foot slips. Increasing path radius caused slips with greater mediolateral direction components. We show a range of context-dependent slips are possible, likely due to instantaneous magnitudes and orientations of shear ground reaction forces. Our results contribute to a comprehensive understanding of walking slips, which fall prevention methods can leverage. Nature Publishing Group UK 2022-10-23 /pmc/articles/PMC9588765/ /pubmed/36274104 http://dx.doi.org/10.1038/s41598-022-21701-7 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Rasmussen, Corbin M.
Curtze, Carolin
Mukherjee, Mukul
Hunt, Nathaniel H.
Slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset
title Slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset
title_full Slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset
title_fullStr Slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset
title_full_unstemmed Slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset
title_short Slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset
title_sort slipping mechanics during walking along curved paths depend on the biomechanical context at slip onset
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9588765/
https://www.ncbi.nlm.nih.gov/pubmed/36274104
http://dx.doi.org/10.1038/s41598-022-21701-7
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