Use of motor abundance in young and older adults during dual-task treadmill walking.

Motor abundance allows individuals to perform any task reliably while being variable in movement's particulars. The study investigated age-related differences in this feature when young adults (YA) and older adults (OA) performed challenging tasks, namely treadmill walking alone and while perfo...

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Autores principales:	Leslie M Decker, Fabien Cignetti, Jane F Potter, Stephanie A Studenski, Nicholas Stergiou
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/740794c096c44417a7acd1954ac98e72
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spelling	oai:doaj.org-article:740794c096c44417a7acd1954ac98e722021-11-18T07:11:40ZUse of motor abundance in young and older adults during dual-task treadmill walking.1932-620310.1371/journal.pone.0041306https://doaj.org/article/740794c096c44417a7acd1954ac98e722012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22911777/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Motor abundance allows individuals to perform any task reliably while being variable in movement's particulars. The study investigated age-related differences in this feature when young adults (YA) and older adults (OA) performed challenging tasks, namely treadmill walking alone and while performing a cognitive task. A goal function for treadmill walking was first defined, i.e., maintain constant speed at each step, which led to a goal equivalent manifold (GEM) containing all combinations of step time and step length that equally satisfied the function. Given the GEM, amounts of goal-equivalent and non-goal-equivalent variability were afterwards determined and used to define an index providing information about the set of effective motor solutions relative to the GEM. The set was limited in OA compared to YA in treadmill walking alone, indicating that OA made less flexible use of motor abundance than YA. However, this differentiation between YA and OA disappeared when concurrently performing the cognitive task. It is proposed that OA might have benefited from cognitive compensation.Leslie M DeckerFabien CignettiJane F PotterStephanie A StudenskiNicholas StergiouPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 7, p e41306 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Leslie M Decker Fabien Cignetti Jane F Potter Stephanie A Studenski Nicholas Stergiou Use of motor abundance in young and older adults during dual-task treadmill walking.
description	Motor abundance allows individuals to perform any task reliably while being variable in movement's particulars. The study investigated age-related differences in this feature when young adults (YA) and older adults (OA) performed challenging tasks, namely treadmill walking alone and while performing a cognitive task. A goal function for treadmill walking was first defined, i.e., maintain constant speed at each step, which led to a goal equivalent manifold (GEM) containing all combinations of step time and step length that equally satisfied the function. Given the GEM, amounts of goal-equivalent and non-goal-equivalent variability were afterwards determined and used to define an index providing information about the set of effective motor solutions relative to the GEM. The set was limited in OA compared to YA in treadmill walking alone, indicating that OA made less flexible use of motor abundance than YA. However, this differentiation between YA and OA disappeared when concurrently performing the cognitive task. It is proposed that OA might have benefited from cognitive compensation.
format	article
author	Leslie M Decker Fabien Cignetti Jane F Potter Stephanie A Studenski Nicholas Stergiou
author_facet	Leslie M Decker Fabien Cignetti Jane F Potter Stephanie A Studenski Nicholas Stergiou
author_sort	Leslie M Decker
title	Use of motor abundance in young and older adults during dual-task treadmill walking.
title_short	Use of motor abundance in young and older adults during dual-task treadmill walking.
title_full	Use of motor abundance in young and older adults during dual-task treadmill walking.
title_fullStr	Use of motor abundance in young and older adults during dual-task treadmill walking.
title_full_unstemmed	Use of motor abundance in young and older adults during dual-task treadmill walking.
title_sort	use of motor abundance in young and older adults during dual-task treadmill walking.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/740794c096c44417a7acd1954ac98e72
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Use of motor abundance in young and older adults during dual-task treadmill walking.

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