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  1. Carla van den Berg1,2,
  2. Patricia K Doyle-Baker2,3,
  3. Alberto Nettel-Aguirre1,2,4,5,
  4. Sarah Richmond1,6,7,
  5. Carolyn Emery1,2,4,5
  1. 1Sport Injury Prevention Research Centre, University of Calgary, Calgary, Canada
  2. 2Faculty of Kinesiology, University of Calgary, Calgary, Canada
  3. 3Faculty of Environmental Design, University of Calgary, Calgary, Canada
  4. 4Department of Paediatrics, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Canada
  5. 5Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Canada
  6. 6School of Kinesiology and Health Science, York University, Toronto, Canada
  7. 7Child Health Evaluative Sciences, Hospital for Sick Children, Toronto, Canada


    Background Children and youth who sustain a sport and recreational (S&R) injury may be at greater risk of attributing long-term unhealthy body composition and low physical fitness.

    Objective To assess the potential influence of previous S&R injury on body composition, cardiorespiratory fitness, musculoskeletal strength, and dynamic balance in junior high school students.

    Design Cross-sectional.

    Setting Junior high schools in Calgary, Alberta, Canada.

    Participants Students aged 11–16 years (n=1,039; 584 males and 455 females) from six junior high schools.

    Assessment of Risk Factors Participants reported information on demographics, sport participation over the previous year, and S&R injuries sustained in the previous 12 months via a questionnaire.

    Main Outcome Measurements Physical fitness measures included predicted VO2max from a 20-m shuttle run to assess cardiorespiratory fitness, vertical jump to assess lower body musculoskeletal fitness, and the Y-balance and unipedal eyes closed balance tests to assess dynamic balance. Health outcome measures to assess body composition included waist circumference, and body mass index (BMI) calculated from height and weight measures. Statistical analyses (adjusting for age, sex, and mean weekly hours of sport participation) to assess the association between previous S&R injury (yes/no) and each outcome included multivariable logistic regression for body composition measures and multivariable linear regression for physical fitness measures.

    Results One hundred eighty-eight (18.1%) students reported sustaining a S&R injury in the previous year. Previously injured participants had significantly higher BMI (OR=1.82, 99% CI 1.07–3.11) compared to uninjured participants. Exploratory analysis results suggest a more in-depth look at the association between number of previous injuries and body composition.

    Conclusions Participants with a history of injury demonstrated unhealthier body composition compared to uninjured participants. Body composition should be considered in future injury prevention research in youth.

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