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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Frontiers Media S.A.
2021
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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) |
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gait analysis optimal control obstacle crossing Tai-Chi Chuan risk of fall Biotechnology TP248.13-248.65 |
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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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