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dc.contributor.authorBourne, MN
dc.contributor.authorOpar, DA
dc.contributor.authorWilliams, MD
dc.contributor.authorAl Najjar, A
dc.contributor.authorShield, AJ
dc.date.accessioned2018-03-26T03:37:07Z
dc.date.available2018-03-26T03:37:07Z
dc.date.issued2016
dc.identifier.issn0905-7188
dc.identifier.doi10.1111/sms.12494
dc.identifier.urihttp://hdl.handle.net/10072/372350
dc.description.abstractThis study aimed to determine: (a) the spatial patterns of hamstring activation during the Nordic hamstring exercise (NHE); (b) whether previously injured hamstrings display activation deficits during the NHE; and (c) whether previously injured hamstrings exhibit altered cross‐sectional area (CSA). Ten healthy, recreationally active men with a history of unilateral hamstring strain injury underwent functional magnetic resonance imaging of their thighs before and after six sets of 10 repetitions of the NHE. Transverse (T2) relaxation times of all hamstring muscles [biceps femoris long head (BFlh); biceps femoris short head (BFsh); semitendinosus (ST); semimembranosus (SM)] were measured at rest and immediately after the NHE and CSA was measured at rest. For the uninjured limb, the ST's percentage increase in T2 with exercise was 16.8%, 15.8%, and 20.2% greater than the increases exhibited by the BFlh, BFsh, and SM, respectively (P < 0.002 for all). Previously injured hamstring muscles (n = 10) displayed significantly smaller increases in T2 post‐exercise than the homonymous muscles in the uninjured contralateral limb (mean difference −7.2%, P = 0.001). No muscles displayed significant between‐limb differences in CSA. During the NHE, the ST is preferentially activated and previously injured hamstring muscles display chronic activation deficits compared with uninjured contralateral muscles.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley-Blackwell Publishing
dc.relation.ispartofpagefrom666
dc.relation.ispartofpageto674
dc.relation.ispartofissue6
dc.relation.ispartofjournalScandinavian Journal of Medicine & Science in Sports
dc.relation.ispartofvolume26
dc.subject.fieldofresearchHuman Movement and Sports Science not elsewhere classified
dc.subject.fieldofresearchHuman Movement and Sports Sciences
dc.subject.fieldofresearchMedical Physiology
dc.subject.fieldofresearchcode110699
dc.subject.fieldofresearchcode1106
dc.subject.fieldofresearchcode1116
dc.titleMuscle activation patterns in the Nordic hamstring exercise: Impact of prior strain injury
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2016 Blackwell Verlag GmbH. This is the peer reviewed version of the following article: Muscle activation patterns in the Nordic hamstring exercise: Impact of prior strain injury, Scandinavian Journal of Medicine & Science in Sports, Volume26, Issue6, Pages 666-674, which has been published in final form at 10.1111/sms.12494. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-828039.html)
gro.hasfulltextFull Text
gro.griffith.authorBourne, Matthew


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