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dc.contributor.authorBarrett, Roden_US
dc.contributor.authorKavanagh, Justinen_US
dc.contributor.authorMorrison, Stevenen_US
dc.date.accessioned2017-04-04T15:20:38Z
dc.date.available2017-04-04T15:20:38Z
dc.date.issued2006en_US
dc.date.modified2009-01-12T06:23:52Z
dc.identifier.issn87507587en_US
dc.identifier.doi10.1152/japplphysiol.00165.2006en_AU
dc.identifier.urihttp://hdl.handle.net/10072/14208
dc.description.abstractThe purpose of this study was to examine how inducing fatigue of the 1) lumbar erector spinae and 2) cervical erector spinae (CES) muscles affected the ability to maintain head stability during walking. Triaxial accelerometers were attached to the head, upper trunk, and lower trunk to measure accelerations in the vertical, anterior-posterior, and mediolateral directions during walking. Using three accelerometers enabled two adjacent upper body segments to be defined: the neck segment and trunk segment. A transfer function was applied to root mean square acceleration, peak power, and harmonic data derived from spectral analysis of accelerations to quantify segmental gain. The structure of upper body accelerations were examined using measures of signal regularity and smoothness. The main findings were that head stability was only affected in the anterior-posterior direction, as accelerations of the head were less regular following CES fatigue. Furthermore, following CES fatigue, the central nervous system altered the attenuation properties of the trunk segment in the anterior-posterior direction, presumably to enhance head stability. Following lumbar erector spinae fatigue, the trunk segment had greater gain and increased regularity and smoothness of accelerations in the mediolateral direction. Overall, the results of this study suggest that erector spinae fatigue differentially altered segmental attenuation during walking, according to the level of the upper body that was fatigued and the direction that oscillations were attenuated. A compensatory postural response was not only elicited in the sagittal plane, where greater segmental attenuation occurred, but also in the frontal plane, where greater segmental gain occurred.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherAmerican Physiological Societyen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefromO1118en_US
dc.relation.ispartofpagetoO1126en_US
dc.relation.ispartofjournalJournal of Applied Physiologyen_US
dc.relation.ispartofvolume101en_US
dc.rights.retentionNen_AU
dc.subject.fieldofresearchcode321403en_US
dc.subject.fieldofresearchcode321402en_US
dc.titleLumbar and cervical erector spinae fatigue elicit compensatory postural responses to assist in maintaining head stability during walking.en_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.date.issued2006
gro.hasfulltextNo Full Text


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