PittsburghV1, France, Analysis, bibRecord, 000511

Use of Motor Abundance in Young and Older Adults during Dual-Task Treadmill Walking

Identifieur interne : 000511 ( France/Analysis ); précédent : 000510; suivant : 000512

Use of Motor Abundance in Young and Older Adults during Dual-Task Treadmill Walking

Auteurs : Leslie Decker [États-Unis] ; Fabien Cignetti [France] ; Jane Potter [États-Unis] ; Stephanie Studenski [États-Unis] ; Nicholas Stergiou [États-Unis]

Source :

PLoS ONE [ 1932-6203 ] ; 2012.

RBID : Hal:hal-01384138

Abstract

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.

Url:

https://hal.archives-ouvertes.fr/hal-01384138

DOI: 10.1371/journal.pone.0041306.t002

Affiliations:

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Hal:hal-01384138

Le document en format XML

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<front><div type="abstract" xml:lang="en">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.</div>
</front>
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<affiliations><list><country><li>France</li>
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<region><li>Pennsylvanie</li>
<li>Provence-Alpes-Côte d'Azur</li>
</region>
<settlement><li>Marseille</li>
<li>Pittsburgh</li>
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<name sortKey="Potter, Jane" sort="Potter, Jane" uniqKey="Potter J" first="Jane" last="Potter">Jane Potter</name>
<name sortKey="Stergiou, Nicholas" sort="Stergiou, Nicholas" uniqKey="Stergiou N" first="Nicholas" last="Stergiou">Nicholas Stergiou</name>
<name sortKey="Studenski, Stephanie" sort="Studenski, Stephanie" uniqKey="Studenski S" first="Stephanie" last="Studenski">Stephanie Studenski</name>
</country>
<country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Cignetti, Fabien" sort="Cignetti, Fabien" uniqKey="Cignetti F" first="Fabien" last="Cignetti">Fabien Cignetti</name>
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</record>

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   |wiki=    Wicri/Amérique
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   |étape=   Analysis
   |type=    RBID
   |clé=     Hal:hal-01384138
   |texte=   Use of Motor Abundance in Young and Older Adults during Dual-Task Treadmill Walking
}}

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Use of Motor Abundance in Young and Older Adults during Dual-Task Treadmill Walking

Use of Motor Abundance in Young and Older Adults during Dual-Task Treadmill Walking

Source :

Abstract

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Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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