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The Effect of a Verbal Cognitive Task on Postural Sway Does Not Persist When the Task Is Over

Dual-task balance studies explore interference between balance and cognitive tasks. This study is a descriptive analysis of accelerometry balance metrics to determine if a verbal cognitive task influences postural control after the task ends. Fifty-two healthy older adults (75 ± 6 years old, 30 fema...

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Detalles Bibliográficos
Autores principales: Bohlke, Kayla, Zhu, Xiaonan, Sparto, Patrick J., Redfern, Mark S., Rosano, Caterina, Sejdic, Ervin, Rosso, Andrea L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8704561/
https://www.ncbi.nlm.nih.gov/pubmed/34960520
http://dx.doi.org/10.3390/s21248428
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author Bohlke, Kayla
Zhu, Xiaonan
Sparto, Patrick J.
Redfern, Mark S.
Rosano, Caterina
Sejdic, Ervin
Rosso, Andrea L.
author_facet Bohlke, Kayla
Zhu, Xiaonan
Sparto, Patrick J.
Redfern, Mark S.
Rosano, Caterina
Sejdic, Ervin
Rosso, Andrea L.
author_sort Bohlke, Kayla
collection PubMed
description Dual-task balance studies explore interference between balance and cognitive tasks. This study is a descriptive analysis of accelerometry balance metrics to determine if a verbal cognitive task influences postural control after the task ends. Fifty-two healthy older adults (75 ± 6 years old, 30 female) performed standing balance and cognitive dual-tasks. An accelerometer recorded movement from before, during, and after the task (reciting every other letter of the alphabet). Thirty-six balance metrics were calculated for each task condition. The effect of the cognitive task on postural control was determined by a generalized linear model. Twelve variables, including anterior–posterior centroid frequency, peak frequency and entropy rate, medial-later entropy rate and wavelet entropy, and bandwidth in all directions, exhibited significant differences between baseline and cognitive task periods, but not between baseline and post-task periods. These results indicate that the verbal cognitive task did alter balance, but did not bring about persistent effects after the task had ended. Traditional balance measurements, i.e., root mean square and normalized path length, notably lacked significance, highlighting the potential to use other accelerometer metrics for the early detection of balance problems. These novel insights into the temporal dynamics of dual-task balance support current dual-task paradigms to reduce fall risk in older adults.
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spelling pubmed-87045612021-12-25 The Effect of a Verbal Cognitive Task on Postural Sway Does Not Persist When the Task Is Over Bohlke, Kayla Zhu, Xiaonan Sparto, Patrick J. Redfern, Mark S. Rosano, Caterina Sejdic, Ervin Rosso, Andrea L. Sensors (Basel) Article Dual-task balance studies explore interference between balance and cognitive tasks. This study is a descriptive analysis of accelerometry balance metrics to determine if a verbal cognitive task influences postural control after the task ends. Fifty-two healthy older adults (75 ± 6 years old, 30 female) performed standing balance and cognitive dual-tasks. An accelerometer recorded movement from before, during, and after the task (reciting every other letter of the alphabet). Thirty-six balance metrics were calculated for each task condition. The effect of the cognitive task on postural control was determined by a generalized linear model. Twelve variables, including anterior–posterior centroid frequency, peak frequency and entropy rate, medial-later entropy rate and wavelet entropy, and bandwidth in all directions, exhibited significant differences between baseline and cognitive task periods, but not between baseline and post-task periods. These results indicate that the verbal cognitive task did alter balance, but did not bring about persistent effects after the task had ended. Traditional balance measurements, i.e., root mean square and normalized path length, notably lacked significance, highlighting the potential to use other accelerometer metrics for the early detection of balance problems. These novel insights into the temporal dynamics of dual-task balance support current dual-task paradigms to reduce fall risk in older adults. MDPI 2021-12-17 /pmc/articles/PMC8704561/ /pubmed/34960520 http://dx.doi.org/10.3390/s21248428 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bohlke, Kayla
Zhu, Xiaonan
Sparto, Patrick J.
Redfern, Mark S.
Rosano, Caterina
Sejdic, Ervin
Rosso, Andrea L.
The Effect of a Verbal Cognitive Task on Postural Sway Does Not Persist When the Task Is Over
title The Effect of a Verbal Cognitive Task on Postural Sway Does Not Persist When the Task Is Over
title_full The Effect of a Verbal Cognitive Task on Postural Sway Does Not Persist When the Task Is Over
title_fullStr The Effect of a Verbal Cognitive Task on Postural Sway Does Not Persist When the Task Is Over
title_full_unstemmed The Effect of a Verbal Cognitive Task on Postural Sway Does Not Persist When the Task Is Over
title_short The Effect of a Verbal Cognitive Task on Postural Sway Does Not Persist When the Task Is Over
title_sort effect of a verbal cognitive task on postural sway does not persist when the task is over
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8704561/
https://www.ncbi.nlm.nih.gov/pubmed/34960520
http://dx.doi.org/10.3390/s21248428
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