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Weaker lower extremity muscle strength predicts traumatic knee injury in youth female but not male athletes

Ryman Augustsson, Sofia LU and Ageberg, Eva LU (2017) In BMJ Open Sport and Exercise Medicine 3(1).
Abstract

Background The role of lower extremity (LE) muscle strength for predicting traumatic knee injury in youth athletes is largely unknown. Aims The aim was to investigate the influence of LE muscle strength on traumatic knee injury in youth female and male athletes. Methods 225 athletes (40% females) from sport senior high schools in Sweden were included in this case-control study. The athletes recorded any traumatic knee injury that had occurred during their high-school period in a web-based injury form. A one repetition maximum (1RM) barbell squat test was used to measure LE muscle strength. The 1RM was dichotomised to analyse weak' versus strong' athletes according to the median (weak median vs strong median). Results 63 traumatic knee... (More)

Background The role of lower extremity (LE) muscle strength for predicting traumatic knee injury in youth athletes is largely unknown. Aims The aim was to investigate the influence of LE muscle strength on traumatic knee injury in youth female and male athletes. Methods 225 athletes (40% females) from sport senior high schools in Sweden were included in this case-control study. The athletes recorded any traumatic knee injury that had occurred during their high-school period in a web-based injury form. A one repetition maximum (1RM) barbell squat test was used to measure LE muscle strength. The 1RM was dichotomised to analyse weak' versus strong' athletes according to the median (weak median vs strong median). Results 63 traumatic knee injuries, including 18 ACL injuries, were registered. The majority of injured female athletes were in the weak group compared with the strong group (p=0.0001). The odds of sustaining a traumatic knee injury and an ACL injury was 9.5 times higher and 7 times higher, respectively, in the weak median group compared with the strong median group in females (p ≤0.011). A relative 1RM squat ≤1.05 kg (105% of bodyweight) was established as the best cut-off value to distinguish high versus low risk of injury in female athletes. No strength-injury relationships were observed for the male athletes (p ≥0.348). Conclusions Weaker LE muscle strength predicted traumatic knee injury in youth female athletes, but not in males. This suggests that LE muscle strength should be included in injury screening in youth female athletes.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ACL, muscle strength, traumatic knee injury, youth athletes
in
BMJ Open Sport and Exercise Medicine
volume
3
issue
1
publisher
BMJ Publishing Group
external identifiers
  • scopus:85050274331
ISSN
2055-7647
DOI
10.1136/bmjsem-2017-000222
language
English
LU publication?
yes
id
16fcbdcc-da07-4b1f-981b-800ae2fa60e0
date added to LUP
2018-08-28 13:49:22
date last changed
2019-04-10 04:12:20
@article{16fcbdcc-da07-4b1f-981b-800ae2fa60e0,
  abstract     = {<p>Background The role of lower extremity (LE) muscle strength for predicting traumatic knee injury in youth athletes is largely unknown. Aims The aim was to investigate the influence of LE muscle strength on traumatic knee injury in youth female and male athletes. Methods 225 athletes (40% females) from sport senior high schools in Sweden were included in this case-control study. The athletes recorded any traumatic knee injury that had occurred during their high-school period in a web-based injury form. A one repetition maximum (1RM) barbell squat test was used to measure LE muscle strength. The 1RM was dichotomised to analyse weak' versus strong' athletes according to the median (weak median vs strong median). Results 63 traumatic knee injuries, including 18 ACL injuries, were registered. The majority of injured female athletes were in the weak group compared with the strong group (p=0.0001). The odds of sustaining a traumatic knee injury and an ACL injury was 9.5 times higher and 7 times higher, respectively, in the weak median group compared with the strong median group in females (p ≤0.011). A relative 1RM squat ≤1.05 kg (105% of bodyweight) was established as the best cut-off value to distinguish high versus low risk of injury in female athletes. No strength-injury relationships were observed for the male athletes (p ≥0.348). Conclusions Weaker LE muscle strength predicted traumatic knee injury in youth female athletes, but not in males. This suggests that LE muscle strength should be included in injury screening in youth female athletes.</p>},
  articleno    = {e000222},
  author       = {Ryman Augustsson, Sofia and Ageberg, Eva},
  issn         = {2055-7647},
  keyword      = {ACL,muscle strength,traumatic knee injury,youth athletes},
  language     = {eng},
  month        = {08},
  number       = {1},
  publisher    = {BMJ Publishing Group},
  series       = {BMJ Open Sport and Exercise Medicine},
  title        = {Weaker lower extremity muscle strength predicts traumatic knee injury in youth female but not male athletes},
  url          = {http://dx.doi.org/10.1136/bmjsem-2017-000222},
  volume       = {3},
  year         = {2017},
}