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dc.contributor.author
Singh, Navrag B.
dc.contributor.author
König, Niklas
dc.contributor.author
Arampatzis, Adamantios
dc.contributor.author
Heller, Markus O.
dc.contributor.author
Taylor, Bill
dc.date.accessioned
2018-09-12T12:32:56Z
dc.date.available
2017-06-10T20:11:58Z
dc.date.available
2018-09-12T12:32:56Z
dc.date.issued
2012-11-06
dc.identifier.issn
1932-6203
dc.identifier.other
10.1371/journal.pone.0048449
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/70614
dc.identifier.doi
10.3929/ethz-b-000070614
dc.description.abstract
Fluctuations during isometric force production tasks occur due to the inability of musculature to generate purely constant submaximal forces and are considered to be an estimation of neuromuscular noise. The human sensori-motor system regulates complex interactions between multiple afferent and efferent systems, which results in variability during functional task performance. Since muscles are the only active component of the motor system, it therefore seems reasonable that neuromuscular noise plays a key role in governing variability during both standing and walking. Seventy elderly women (including 34 fallers) performed multiple repetitions of isometric force production, quiet standing and walking tasks. No relationship between neuromuscular noise and functional task performance was observed in either the faller or the non-faller cohorts. When classified into groups with either nominal (group NOM, 25th –75th percentile) or extreme (either too high or too low, group EXT) levels of neuromuscular noise, group NOM demonstrated a clear association (r2>0.23, p<0.05) between neuromuscular noise and variability during task performance. On the other hand, group EXT demonstrated no such relationship, but also tended to walk slower, and had lower stride lengths, as well as lower isometric strength. These results suggest that neuromuscular noise is related to the quality of both static and dynamic functional task performance, but also that extreme levels of neuromuscular noise constitute a key neuromuscular deficit in the elderly.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Public Library of Science
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Extreme Levels of Noise Constitute a Key Neuromuscular Deficit in the Elderly
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
PLoS ONE
ethz.journal.volume
7
en_US
ethz.journal.issue
11
en_US
ethz.journal.abbreviated
PLoS ONE
ethz.pages.start
e48449
en_US
ethz.size
8 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
006206116
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::02518 - Institut für Biomechanik / Institute for Biomechanics::03994 - Taylor, William R. / Taylor, William R.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::02518 - Institut für Biomechanik / Institute for Biomechanics::03994 - Taylor, William R. / Taylor, William R.
ethz.date.deposited
2017-06-10T20:12:59Z
ethz.source
ECIT
ethz.identifier.importid
imp593650e49124e63747
ethz.ecitpid
pub:111779
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T08:29:32Z
ethz.rosetta.lastUpdated
2019-02-03T07:54:58Z
ethz.rosetta.versionExported
true
ethz.COinS
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