Eccentric Knee Flexor Strength and Risk of Hamstring Injuries in Rugby Union: A Prospective Study

The American Journal of Sports Medicine
Matthew N BourneAnthony J Shield

Abstract

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. 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. Cohort study; Level of evidence, 2. 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 ± 3.8 years; mean height, 185.0 ± 6.8 cm; mean weight, 96.5 ± 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. 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 ...Continue Reading

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Citations

Jun 12, 2016·British Journal of Sports Medicine·Steven DuhigMorgan Williams
Mar 21, 2017·Journal of Science and Medicine in Sport·Steven J DuhigAnthony J Shield
Mar 2, 2017·Scandinavian Journal of Medicine & Science in Sports·T AltH K Strüder
Dec 22, 2017·Medicine and Science in Sports and Exercise·Joshua D RuddyDavid A Opar
Nov 26, 2016·British Journal of Sports Medicine·Joshua D RuddyDavid A Opar
Nov 11, 2018·British Journal of Sports Medicine·Matthew BuckthorpeMo Gimpel
Feb 2, 2020·The Journal of Orthopaedic and Sports Physical Therapy·Jack T HickeyDavid A Opar
Oct 31, 2019·Scandinavian Journal of Medicine & Science in Sports·Mark RoeCatherine Blake
Mar 18, 2020·European Journal of Sport Science·João Breno Ribeiro-AlvaresBruno Manfredini Baroni
Jun 25, 2020·International Journal of Sports Physiology and Performance·Thales M MedeirosBruno M Baroni
Jun 23, 2020·Journal of Strength and Conditioning Research·Adam P BurrowsGiuseppe Cimadoro
Mar 6, 2017·British Journal of Sports Medicine·Brady Green, Tania Pizzari
Nov 9, 2017·Sports Medicine·Matthew N BourneAnthony J Shield
Nov 9, 2017·Scandinavian Journal of Medicine & Science in Sports·C LordA J Blazevich
Jan 16, 2020·Journal of Exercise Rehabilitation·Se-Yeon ParkDu-Jin Park
Jun 30, 2019·The Journal of Orthopaedic and Sports Physical Therapy·Jack T HickeyDavid A Opar
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Dec 18, 2020·Sports Medicine·Matthew BuckthorpeFrancesco Della Villa
Jan 29, 2021·Journal of Sports Sciences·Nigel A SmithJulie A Hides
Nov 28, 2019·Journal of Functional Morphology and Kinesiology·Benjamin DruryDavid G Behm

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