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dc.contributor.authorRingheim, Inge
dc.contributor.authorIndahl, Aage
dc.contributor.authorRoeleveld, Karin
dc.date.accessioned2019-09-25T06:50:40Z
dc.date.available2019-09-25T06:50:40Z
dc.date.created2019-03-15T12:46:24Z
dc.date.issued2019
dc.identifier.citationPLOS ONE. 2019, 14 (3), .nb_NO
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/11250/2618608
dc.description.abstractThe purpose of this study was to investigate muscle activity variability within and between the right and left side of lumbar muscles in patients with chronic low back pain (cLBP) compared to healthy controls (HCs) during sustained quiet sitting. Surface electromyographic (EMG) signals were collected bilaterally from the lumbar muscles with 2 high density surface EMG grids of 9x14 electrodes. Root mean square values (RMS) over 1-sec epochs of all bipolar EMG leadings were obtained. Between-sides alternating activation was computed, as well as temporal- and spatial variability within the electrode grids through the coefficient of variation and correlations between RMS distributions. The subjective influence of sitting was evaluated by the rating of perceived exertion and the amount of LBP on a numeric pain rating scale. Compared to HCs, the patients with cLBP had lower temporal (p = 0.03) and similar spatial muscle activity variability during sitting, despite a more variable sitting position. This did not result in increased muscle fatigue indicated by EMG, but the patients with cLBP reported higher levels of RPE during- and more LBP after the sitting and as a consequence ended the sitting earlier than HCs (p < 0.01). Present findings lend support to the presence of less tolerance for low-level static muscle load in patients with cLBP.nb_NO
dc.language.isoengnb_NO
dc.publisherPublic Library of Science (PLOS)nb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleReduced muscle activity variability in lumbar extensor muscles during sustained sitting in individuals with chronic low back painnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.volume14nb_NO
dc.source.journalPLOS ONEnb_NO
dc.source.issue3nb_NO
dc.identifier.doi10.1371/journal.pone.0213778
dc.identifier.cristin1685054
dc.description.localcodeCopyright: © 2019 Ringheim et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.nb_NO
cristin.unitcode194,65,30,0
cristin.unitnameInstitutt for nevromedisin og bevegelsesvitenskap
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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