Best-Compromise Control Strategy Between Mechanical Energy Expenditure and Foot Clearance for Obstacle-Crossing in Older Adults: Effects of Tai-Chi Chuan Practice

Background: Obstacle-crossing increases the risk of falls in older people. This study aimed to identify the effects of long-term Tai-Chi Chuan (TCC) practice on the control strategies for obstacle-crossing in older people.Methods: A multi-objective optimal control technique with measured gait data w...

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Autores principales: Chien-Chung Kuo, Sheng-Chang Chen, Jr-Yi Wang, Tsung-Jung Ho, Tung-Wu Lu
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Lenguaje:EN
Publicado: Frontiers Media S.A. 2021
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Acceso en línea:https://doaj.org/article/bcae9ac2615b4d6fa82c97e37aa7713a
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spelling oai:doaj.org-article:bcae9ac2615b4d6fa82c97e37aa7713a2021-12-02T11:14:19ZBest-Compromise Control Strategy Between Mechanical Energy Expenditure and Foot Clearance for Obstacle-Crossing in Older Adults: Effects of Tai-Chi Chuan Practice2296-418510.3389/fbioe.2021.774771https://doaj.org/article/bcae9ac2615b4d6fa82c97e37aa7713a2021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fbioe.2021.774771/fullhttps://doaj.org/toc/2296-4185Background: Obstacle-crossing increases the risk of falls in older people. This study aimed to identify the effects of long-term Tai-Chi Chuan (TCC) practice on the control strategies for obstacle-crossing in older people.Methods: A multi-objective optimal control technique with measured gait data was used to identify the control strategies adopted by 15 long-term TCC practitioners and 15 healthy controls when crossing obstacles of different heights, in terms of the best-compromise weighting sets for the conflicting objectives of minimizing energy expenditure and maximizing the toe-obstacle and heel-obstacle clearances.Results and Conclusions: The long-term TCC older practitioners adopted a best-compromise control strategy similar to those adopted by young adults, with greater weightings on the minimization of the mechanical energy expenditure and smaller weightings on foot-clearance as compared to non-TCC controls (TCC: 0.72, 0.14, 0.14; Control: 0.55, 0.225, 0.225). This strategy enabled the long-term TCC older practitioners to cross obstacles with significantly greater leading-toe clearances but with relatively less mechanical energy expenditure. With the current approach, further simulations of obstacle-crossing mechanics with a given weighting set will be useful for answering clinically relevant what-if questions, such as what abilities would be needed if the non-TCC older people were to cross obstacles using the crossing strategy of the TCC people.Chien-Chung KuoChien-Chung KuoSheng-Chang ChenJr-Yi WangJr-Yi WangTsung-Jung HoTsung-Jung HoTsung-Jung HoTung-Wu LuFrontiers Media S.A.articlegait analysisoptimal controlobstacle crossingTai-Chi Chuanrisk of fallBiotechnologyTP248.13-248.65ENFrontiers in Bioengineering and Biotechnology, Vol 9 (2021)
institution DOAJ
collection DOAJ
language EN
topic gait analysis
optimal control
obstacle crossing
Tai-Chi Chuan
risk of fall
Biotechnology
TP248.13-248.65
spellingShingle gait analysis
optimal control
obstacle crossing
Tai-Chi Chuan
risk of fall
Biotechnology
TP248.13-248.65
Chien-Chung Kuo
Chien-Chung Kuo
Sheng-Chang Chen
Jr-Yi Wang
Jr-Yi Wang
Tsung-Jung Ho
Tsung-Jung Ho
Tsung-Jung Ho
Tung-Wu Lu
Best-Compromise Control Strategy Between Mechanical Energy Expenditure and Foot Clearance for Obstacle-Crossing in Older Adults: Effects of Tai-Chi Chuan Practice
description Background: Obstacle-crossing increases the risk of falls in older people. This study aimed to identify the effects of long-term Tai-Chi Chuan (TCC) practice on the control strategies for obstacle-crossing in older people.Methods: A multi-objective optimal control technique with measured gait data was used to identify the control strategies adopted by 15 long-term TCC practitioners and 15 healthy controls when crossing obstacles of different heights, in terms of the best-compromise weighting sets for the conflicting objectives of minimizing energy expenditure and maximizing the toe-obstacle and heel-obstacle clearances.Results and Conclusions: The long-term TCC older practitioners adopted a best-compromise control strategy similar to those adopted by young adults, with greater weightings on the minimization of the mechanical energy expenditure and smaller weightings on foot-clearance as compared to non-TCC controls (TCC: 0.72, 0.14, 0.14; Control: 0.55, 0.225, 0.225). This strategy enabled the long-term TCC older practitioners to cross obstacles with significantly greater leading-toe clearances but with relatively less mechanical energy expenditure. With the current approach, further simulations of obstacle-crossing mechanics with a given weighting set will be useful for answering clinically relevant what-if questions, such as what abilities would be needed if the non-TCC older people were to cross obstacles using the crossing strategy of the TCC people.
format article
author Chien-Chung Kuo
Chien-Chung Kuo
Sheng-Chang Chen
Jr-Yi Wang
Jr-Yi Wang
Tsung-Jung Ho
Tsung-Jung Ho
Tsung-Jung Ho
Tung-Wu Lu
author_facet Chien-Chung Kuo
Chien-Chung Kuo
Sheng-Chang Chen
Jr-Yi Wang
Jr-Yi Wang
Tsung-Jung Ho
Tsung-Jung Ho
Tsung-Jung Ho
Tung-Wu Lu
author_sort Chien-Chung Kuo
title Best-Compromise Control Strategy Between Mechanical Energy Expenditure and Foot Clearance for Obstacle-Crossing in Older Adults: Effects of Tai-Chi Chuan Practice
title_short Best-Compromise Control Strategy Between Mechanical Energy Expenditure and Foot Clearance for Obstacle-Crossing in Older Adults: Effects of Tai-Chi Chuan Practice
title_full Best-Compromise Control Strategy Between Mechanical Energy Expenditure and Foot Clearance for Obstacle-Crossing in Older Adults: Effects of Tai-Chi Chuan Practice
title_fullStr Best-Compromise Control Strategy Between Mechanical Energy Expenditure and Foot Clearance for Obstacle-Crossing in Older Adults: Effects of Tai-Chi Chuan Practice
title_full_unstemmed Best-Compromise Control Strategy Between Mechanical Energy Expenditure and Foot Clearance for Obstacle-Crossing in Older Adults: Effects of Tai-Chi Chuan Practice
title_sort best-compromise control strategy between mechanical energy expenditure and foot clearance for obstacle-crossing in older adults: effects of tai-chi chuan practice
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/bcae9ac2615b4d6fa82c97e37aa7713a
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