Aging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions

Most falls might be attributed to an unexpected perturbation such as a slip. It might be aggravated by the deterioration of the sensory system as people aged. This deterioration increases the demand in active control. However, what levels of demand in active control do older adults need? This study...

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Autores principales:	Jing Hu, Jung Hung Chien
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	aging gait sensory perturbation active control Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571
Acceso en línea:	https://doaj.org/article/a87188ac6b9f457cb328235da9c1808f
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spelling	oai:doaj.org-article:a87188ac6b9f457cb328235da9c1808f2021-11-05T13:47:50ZAging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions1663-436510.3389/fnagi.2021.742035https://doaj.org/article/a87188ac6b9f457cb328235da9c1808f2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fnagi.2021.742035/fullhttps://doaj.org/toc/1663-4365Most falls might be attributed to an unexpected perturbation such as a slip. It might be aggravated by the deterioration of the sensory system as people aged. This deterioration increases the demand in active control. However, what levels of demand in active control do older adults need? This study aimed to answer this question by using a novel assessment. Both young and old adults walked in three conditions: normal, slip, and slip with low light conditions. The amount of step length variability, step width variability, and the 95% confidence interval of the ellipse area of heel contact locations was measured to quantify and distinguish different levels of demand and patterns in active control. The results found that less sensory information led to a higher level of demand in active control in both anterior-posterior and medial-lateral directions. Importantly, different patterns in active control were found among different age groups and perturbation conditions. This study extended the current knowledge and further proposed the possibility of multiple patterns in active control. This study also suggests a new method to quantify the levels and patterns in active control under sensory perturbations, and this innovation can be used to guide age-related fall prevention training.Jing HuJung Hung ChienFrontiers Media S.A.articleaginggaitsensoryperturbationactive controlNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571ENFrontiers in Aging Neuroscience, Vol 13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	aging gait sensory perturbation active control Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571
spellingShingle	aging gait sensory perturbation active control Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Jing Hu Jung Hung Chien Aging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions
description	Most falls might be attributed to an unexpected perturbation such as a slip. It might be aggravated by the deterioration of the sensory system as people aged. This deterioration increases the demand in active control. However, what levels of demand in active control do older adults need? This study aimed to answer this question by using a novel assessment. Both young and old adults walked in three conditions: normal, slip, and slip with low light conditions. The amount of step length variability, step width variability, and the 95% confidence interval of the ellipse area of heel contact locations was measured to quantify and distinguish different levels of demand and patterns in active control. The results found that less sensory information led to a higher level of demand in active control in both anterior-posterior and medial-lateral directions. Importantly, different patterns in active control were found among different age groups and perturbation conditions. This study extended the current knowledge and further proposed the possibility of multiple patterns in active control. This study also suggests a new method to quantify the levels and patterns in active control under sensory perturbations, and this innovation can be used to guide age-related fall prevention training.
format	article
author	Jing Hu Jung Hung Chien
author_facet	Jing Hu Jung Hung Chien
author_sort	Jing Hu
title	Aging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions
title_short	Aging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions
title_full	Aging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions
title_fullStr	Aging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions
title_full_unstemmed	Aging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions
title_sort	aging affects the demands and patterns in active control under different sensory-conflicted conditions
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/a87188ac6b9f457cb328235da9c1808f
work_keys_str_mv	AT jinghu agingaffectsthedemandsandpatternsinactivecontrolunderdifferentsensoryconflictedconditions AT junghungchien agingaffectsthedemandsandpatternsinactivecontrolunderdifferentsensoryconflictedconditions
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Aging Affects the Demands and Patterns in Active Control Under Different Sensory-Conflicted Conditions

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