@article{ref1,
title="Hip and groin time-loss injuries decreased slightly but injury burden remained constant in men's professional football: the 15-year prospective UEFA Elite Club Injury Study",
journal="British journal of sports medicine",
year="2019",
author="Werner, Jonas and Hägglund, Martin and Ekstrand, Jan and Waldén, Markus",
volume="53",
number="9",
pages="539-546",
abstract="BACKGROUND: Hip and groin injuries are common in men's professional football (soccer), but the time-trend of these injuries is not known. <br><br>AIM: To investigate hip and groin injury rates, especially time-trends, in men's professional football over 15 consecutive seasons. STUDY DESIGN: Prospective cohort study. SETTING: Men's professional football. <br><br>METHODS: 47 European teams were followed prospectively for a varying number of seasons between 2001/2002 and 2015/2016, totalling 268 team seasons. Time-loss injuries and individual player exposure during training and matches were recorded. Injury rate was defined as the number of <i>injuries</i>/1000 hours and injury burden as the number of <i>lay-off days</i>/1000 hours. Time-trends for total hip and groin injuries and adductor-related injury rates were analysed using Poisson regression, and injury burden was analysed using a negative binomial regression model. <br><br>RESULTS: Hip and groin injuries contributed 1812 out of 12 736 injuries (14%), with adductor-related injury as the most common of hip and groin injuries (n=1139, 63%). The rates of hip and groin injury and adductor-related injury were 1.0/1000 hours and 0.6/1000 hours, and these rates decreased significantly with on average 2% (Exp(b)=0.98, 95% CI 0.97 to 0.99, P=0.003) and 3% (Exp(b)=0.97, 95% CI 0.95 to 0.99, P<0.001) per season (year on year), respectively. The seasonal trend of hip and groin injury burden did not improve (Exp(b)=0.99, 95% CI 0.97 to 1.01, P=0.40). <br><br>CONCLUSIONS: Hip and groin injuries constitute a considerable part of all time-loss injuries in men's professional football. Although there was a promising slight decreasing trend in the rates of hip and groin injury (as a category) and adductor-related injury (as a specific diagnosis), the injury burden remained at a consistent level over the study period.<br><br>© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.<p /> <p>Language: en</p>",
language="en",
issn="0306-3674",
doi="10.1136/bjsports-2017-097796",
url="http://dx.doi.org/10.1136/bjsports-2017-097796"
}