High injury incidence in adolescent female soccer

Mikkel Bek Clausen, Mette Kreutzfeldt Zebis, Merete Møller, Peter Krustrup, Per Hölmich, Niels Wedderkopp, Lars Andersen, Karl Bang Christensen, Kristian Thorborg

    Publikation: Bidrag til tidsskriftTidsskriftsartikelForskningpeer review


    Background: Previous studies report varying rates of time-loss injuries in adolescent female soccer, ranging from 2.4 to 5.3 per 1000
    athlete-exposures or 2.5 to 3.7 per 1000 hours of exposure. However, these studies collected data using traditional injury reports from
    coaches or medical staff, with methods that significantly underestimate injury rates compared with players’ self-reports.
    Purpose: The primary aim was to investigate the injury incidence in adolescent female soccer using self-reports via mobile telephone
    text messaging. The secondary aim was to explore the association between soccer exposure, playing level, and injury risk.
    Study Design: Descriptive epidemiology study and cohort study; Level of evidence, 2 and 3.
    Methods: During a full adolescent female soccer season in Denmark (February-June 2012), a population-based sample of 498
    girls aged 15 to 18 years was included in the prospective registration of injuries. All players were enrolled on a team participating
    in Danish Football Association series. Soccer injuries and exposure were reported weekly by answers to standardized text message
    questions, followed by individual injury interviews. Soccer exposure and playing levels were chosen a priori as the only independent
    variables of interest in the risk factor analyses. Injury rates and relative risks were estimated using Poisson regression.
    Generalized estimation equations were used to take into account that players were clustered within teams.
    Results: There were 498 players who sustained a total of 424 soccer injuries. The incidence of injuries was 15.3 (95% CI, 13.1-
    17.8), the incidence of time-loss injuries was 9.7 (95% CI, 8.2-11.4), and the incidence of severe injuries was 1.1 (95% CI, 0.7-1.6)
    per 1000 hours of soccer exposure. Higher average exposure in injury-free weeks was associated with a lower injury risk (P value
    for trend\.001), and players with low exposure (1 h/wk) were 3 to 10 times more likely to sustain a time-loss injury compared
    with other players (P\.01). Playing level was not associated with the risk of time-loss injuries (P = .18).
    Conclusion: The injury incidence in adolescent female soccer is high, and this includes many severe injuries. Players with low
    soccer participation (1 h/wk) have a significantly higher injury risk compared with players participating more frequently.
    TidsskriftAmerican Journal of Sports Medicine
    Udgave nummer10
    Sider (fra-til)2487-94
    StatusUdgivet - 1 okt. 2014


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