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Age-related differences in dual task walking: a cross sectional study
BACKGROUND: Variability in stride velocity during walking characterizes gait instability and predicts falling in older individuals. Walking while executing a cognitive task is also associated with increased risk of falling, particularly in older adults. Variability in stride velocity, particularly d...
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Formato: | Texto |
Lenguaje: | English |
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BioMed Central
2008
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2607296/ https://www.ncbi.nlm.nih.gov/pubmed/19014583 http://dx.doi.org/10.1186/1743-0003-5-29 |
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author | Priest, Andrew W Salamon, Kathleen B Hollman, John H |
author_facet | Priest, Andrew W Salamon, Kathleen B Hollman, John H |
author_sort | Priest, Andrew W |
collection | PubMed |
description | BACKGROUND: Variability in stride velocity during walking characterizes gait instability and predicts falling in older individuals. Walking while executing a cognitive task is also associated with increased risk of falling, particularly in older adults. Variability in stride velocity, particularly during dual task walking conditions, may differ between younger and older individuals. The purpose of this study was to examine whether gait velocity and variability in stride velocity differ between older community-dwelling women and younger women during dual task walking. METHODS: Twenty-three older (80 ± 9 years) and 19 younger (23 ± 2 years) women walked under each of two conditions: (1) walking at a self-selected velocity and (2) walking at a self-selected velocity while incrementally counting backwards. Gait velocity and variability in stride velocity were measured with GAITRite(® )instrumentation. RESULTS: Gait velocity decreased and variability in stride variability increased, in both groups, during dual task walking. The relative reduction in gait velocity and the magnitude of variability in stride velocity were greater in the older subjects than younger subjects. CONCLUSION: The gait changes observed in dual task walking characterize reduced gait stability and indicate that cognitively demanding tasks during walking have a destabilizing effect on gait that may place older persons at greater risk of falls. |
format | Text |
id | pubmed-2607296 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-26072962008-12-24 Age-related differences in dual task walking: a cross sectional study Priest, Andrew W Salamon, Kathleen B Hollman, John H J Neuroeng Rehabil Research BACKGROUND: Variability in stride velocity during walking characterizes gait instability and predicts falling in older individuals. Walking while executing a cognitive task is also associated with increased risk of falling, particularly in older adults. Variability in stride velocity, particularly during dual task walking conditions, may differ between younger and older individuals. The purpose of this study was to examine whether gait velocity and variability in stride velocity differ between older community-dwelling women and younger women during dual task walking. METHODS: Twenty-three older (80 ± 9 years) and 19 younger (23 ± 2 years) women walked under each of two conditions: (1) walking at a self-selected velocity and (2) walking at a self-selected velocity while incrementally counting backwards. Gait velocity and variability in stride velocity were measured with GAITRite(® )instrumentation. RESULTS: Gait velocity decreased and variability in stride variability increased, in both groups, during dual task walking. The relative reduction in gait velocity and the magnitude of variability in stride velocity were greater in the older subjects than younger subjects. CONCLUSION: The gait changes observed in dual task walking characterize reduced gait stability and indicate that cognitively demanding tasks during walking have a destabilizing effect on gait that may place older persons at greater risk of falls. BioMed Central 2008-11-14 /pmc/articles/PMC2607296/ /pubmed/19014583 http://dx.doi.org/10.1186/1743-0003-5-29 Text en Copyright © 2008 Priest et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Priest, Andrew W Salamon, Kathleen B Hollman, John H Age-related differences in dual task walking: a cross sectional study |
title | Age-related differences in dual task walking: a cross sectional study |
title_full | Age-related differences in dual task walking: a cross sectional study |
title_fullStr | Age-related differences in dual task walking: a cross sectional study |
title_full_unstemmed | Age-related differences in dual task walking: a cross sectional study |
title_short | Age-related differences in dual task walking: a cross sectional study |
title_sort | age-related differences in dual task walking: a cross sectional study |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2607296/ https://www.ncbi.nlm.nih.gov/pubmed/19014583 http://dx.doi.org/10.1186/1743-0003-5-29 |
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