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dc.contributor.authorBourne, Matthew N
dc.contributor.authorOpar, David A
dc.contributor.authorWilliams, Morgan D
dc.contributor.authorShield, Anthony J
dc.date.accessioned2018-03-27T01:30:35Z
dc.date.available2018-03-27T01:30:35Z
dc.date.issued2015
dc.identifier.issn0363-5465
dc.identifier.doi10.1177/0363546515599633
dc.identifier.urihttp://hdl.handle.net/10072/372348
dc.description.abstractBackground: Hamstring strain injuries (HSIs) represent the most common cause of lost playing time in rugby union. Eccentric knee flexor weakness and between-limb imbalance in eccentric knee flexor strength are associated with a heightened risk of HSIs in other sports; however, these variables have not been explored in rugby union. Purpose: To determine if lower levels of eccentric knee flexor strength or greater between-limb imbalance in this parameter during the Nordic hamstring exercise are risk factors for HSIs in rugby union. Study Design: Cohort study; Level of evidence, 2. Methods: This prospective study was conducted over the 2014 Super Rugby and Queensland Rugby Union seasons. In total, 178 rugby union players (mean age, 22.6 6 3.8 years; mean height, 185.0 6 6.8 cm; mean weight, 96.5 6 13.1 kg) had their eccentric knee flexor strength assessed using a custom-made device during the preseason. Reports of previous hamstring, quadriceps, groin, calf, and anterior cruciate ligament injuries were also obtained. The main outcome measure was the prospective occurrence of HSIs. Results: Twenty players suffered at least 1 HSI during the study period. Players with a history of HSIs had a 4.1-fold (95% CI, 1.9- 8.9; P = .001) greater risk of subsequent HSIs than players without such a history. Between-limb imbalance in eccentric knee flexor strength of 15% and 20% increased the risk of HSIs by 2.4-fold (95% CI, 1.1-5.5; P = .033) and 3.4-fold (95% CI, 1.5-7.6; P = .003), respectively. Lower eccentric knee flexor strength and other prior injuries were not associated with an increased risk of future HSIs. Multivariate logistic regression revealed that the risk of reinjuries was augmented in players with strength imbalances. Conclusion: Previous HSIs and between-limb imbalance in eccentric knee flexor strength were associated with an increased risk of future HSIs in rugby union. These results support the rationale for reducing imbalance, particularly in players who have suffered a prior HSI, to mitigate the risk of future injuries.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSage Publications
dc.relation.ispartofpagefrom2663
dc.relation.ispartofpageto2670
dc.relation.ispartofissue11
dc.relation.ispartofjournalAmerican Journal of Sports Medicine
dc.relation.ispartofvolume43
dc.subject.fieldofresearchHuman Movement and Sports Science not elsewhere classified
dc.subject.fieldofresearchBiomedical Engineering
dc.subject.fieldofresearchMechanical Engineering
dc.subject.fieldofresearchHuman Movement and Sports Sciences
dc.subject.fieldofresearchcode110699
dc.subject.fieldofresearchcode0903
dc.subject.fieldofresearchcode0913
dc.subject.fieldofresearchcode1106
dc.titleEccentric Knee Flexor Strength and Risk of Hamstring Injuries in Rugby Union: A Prospective Study
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyrightBourne et al, Eccentric Knee Flexor Strength and Risk of Hamstring Injuries in Rugby Union: A Prospective Study, American Journal of Sports Medicine, The, Vol 43, Issue 11, Page 2663-2670, 2015. Copyright 2015 The Authors. Reprinted by permission of SAGE Publications.
gro.hasfulltextFull Text
gro.griffith.authorBourne, Matthew


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