Effects of mental fatigue on static upright stance and functional balance in older adults

Background: Cognitive influences on balance control may contribute to greater instability and falls in older adults. In support of this, old age exacerbates the effects of a concurrent cognitive task on balance. Mental fatigue is a psychobiological state experienced following prolonged demanding cog...

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Autores principales:	Lucy J. Fletcher, Callum J. Osler
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ageing Balance Cognition Dual task Mental fatigue Postural control Geriatrics RC952-954.6
Acceso en línea:	https://doaj.org/article/7ed720fd738d488bb0566cbdf7efc26d
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spelling	oai:doaj.org-article:7ed720fd738d488bb0566cbdf7efc26d2021-11-28T04:39:49ZEffects of mental fatigue on static upright stance and functional balance in older adults2667-032110.1016/j.ahr.2021.100043https://doaj.org/article/7ed720fd738d488bb0566cbdf7efc26d2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S266703212100041Xhttps://doaj.org/toc/2667-0321Background: Cognitive influences on balance control may contribute to greater instability and falls in older adults. In support of this, old age exacerbates the effects of a concurrent cognitive task on balance. Mental fatigue is a psychobiological state experienced following prolonged demanding cognitive activity. However, its effects on static upright stance and functional balance in older adults is unclear. It is also unclear how the effects of mental fatigue and a concurrent task interact. Methods: Balance was assessed in ten younger and ten older participants before and immediately after 25 min of the incongruent Stroop colour-word test (mental fatigue) and leisurely reading (control), presented in a randomized counterbalanced order on separate days. Static and functional balance was assessed using the centre of pressure path length when standing still and the ‘Timed Up & Go’ test, respectively. These balance assessments were completed with and without a concurrent backward counting task (i.e. dual-task and single-task, respectively). Results: Under subjectively-confirmed conditions of mental fatigue, sway path length when standing still was 32% greater than the control condition in older adults but unchanged in younger adults. This age-dependant effect of mental fatigue on static balance was similar in single-task and dual-task trials. Mental fatigue did not significantly affect functional balance performance in either age group. Conclusions: These findings are the first to show mental fatigue to impair static balance control in older adults. Therefore, whether due to everyday activities or a symptom of disease, mental fatigue may contribute to poor balance in older adults.Lucy J. FletcherCallum J. OslerElsevierarticleAgeingBalanceCognitionDual taskMental fatiguePostural controlGeriatricsRC952-954.6ENAging and Health Research, Vol 1, Iss 4, Pp 100043- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ageing Balance Cognition Dual task Mental fatigue Postural control Geriatrics RC952-954.6
spellingShingle	Ageing Balance Cognition Dual task Mental fatigue Postural control Geriatrics RC952-954.6 Lucy J. Fletcher Callum J. Osler Effects of mental fatigue on static upright stance and functional balance in older adults
description	Background: Cognitive influences on balance control may contribute to greater instability and falls in older adults. In support of this, old age exacerbates the effects of a concurrent cognitive task on balance. Mental fatigue is a psychobiological state experienced following prolonged demanding cognitive activity. However, its effects on static upright stance and functional balance in older adults is unclear. It is also unclear how the effects of mental fatigue and a concurrent task interact. Methods: Balance was assessed in ten younger and ten older participants before and immediately after 25 min of the incongruent Stroop colour-word test (mental fatigue) and leisurely reading (control), presented in a randomized counterbalanced order on separate days. Static and functional balance was assessed using the centre of pressure path length when standing still and the ‘Timed Up & Go’ test, respectively. These balance assessments were completed with and without a concurrent backward counting task (i.e. dual-task and single-task, respectively). Results: Under subjectively-confirmed conditions of mental fatigue, sway path length when standing still was 32% greater than the control condition in older adults but unchanged in younger adults. This age-dependant effect of mental fatigue on static balance was similar in single-task and dual-task trials. Mental fatigue did not significantly affect functional balance performance in either age group. Conclusions: These findings are the first to show mental fatigue to impair static balance control in older adults. Therefore, whether due to everyday activities or a symptom of disease, mental fatigue may contribute to poor balance in older adults.
format	article
author	Lucy J. Fletcher Callum J. Osler
author_facet	Lucy J. Fletcher Callum J. Osler
author_sort	Lucy J. Fletcher
title	Effects of mental fatigue on static upright stance and functional balance in older adults
title_short	Effects of mental fatigue on static upright stance and functional balance in older adults
title_full	Effects of mental fatigue on static upright stance and functional balance in older adults
title_fullStr	Effects of mental fatigue on static upright stance and functional balance in older adults
title_full_unstemmed	Effects of mental fatigue on static upright stance and functional balance in older adults
title_sort	effects of mental fatigue on static upright stance and functional balance in older adults
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7ed720fd738d488bb0566cbdf7efc26d
work_keys_str_mv	AT lucyjfletcher effectsofmentalfatigueonstaticuprightstanceandfunctionalbalanceinolderadults AT callumjosler effectsofmentalfatigueonstaticuprightstanceandfunctionalbalanceinolderadults
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Effects of mental fatigue on static upright stance and functional balance in older adults

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