title: Association between Body Composition and Sport Injury in Canadian Adolescents.
abstract: Purpose:To examine the association between overweight or obesity and sport injury in a population-based sample of Canadian adolescents.Methods:Cross-sectional analyses were performed using the Canadian Community Health Survey (2009-2010), a nationally representative sample (n=12,407) of adolescents aged 12-19 years. Body composition was quantified using BMI, grouping participants into healthy weight, overweight, or obese. The outcome of interest was acute or repetitive strain injury sustained during sport in the previous year. We examined the relationship between sport injury and overweight or obesity compared with healthy weight using multivariate logistic regression, controlling for sex, ethnicity, physical activity, and socio-economic status. We also examined the interaction between physical activity and body composition in a secondary analysis with a subset of active adolescents.Results:No significant relationship was found between being overweight and sport injury (odds ratio [OR]=1.04, 95% CI: 0.92, 1.17); however, a protective effect was seen between obesity and sport injury (OR=0.67, 95% CI: 0.53, 0.84). Secondary analysis revealed that overweight youths with the highest activity level (quartile 4) did have increased odds of sport injury (OR=1.38, 95% CI: 1.04, 1.83), yet obese youths with a moderate activity level (quartile 2) were protected compared with healthy-weight youths (OR=0.46, 95% CI: 0.24, 0.91).Conclusions:Further examination of active adolescents is warranted. Studies should consider sport-specific differences and comprehensive measurement of exposure to sport.
authors.affiliation: School of Population and Public Health, University of British Columbia; British Columbia Children's Hospital, Vancouver.
authors.forename: Allison M
authors.initials: AM
authors.lastname: Ezzat
authors.affiliation: School of Population and Public Health, University of British Columbia.
authors.forename: Amy
authors.initials: A
authors.lastname: Schneeberg
authors.affiliation: School of Population and Public Health, University of British Columbia.
authors.forename: Mieke
authors.initials: M
authors.lastname: Koehoorn
authors.affiliation: Faculty of Kinesiology, Sport Injury Prevention Research Centre; Department of Paediatrics, Cumming School of Medicine, Alberta Children's Hospital Research Institute for Child and Maternal Health; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary.
authors.forename: Carolyn A
authors.initials: CA
authors.lastname: Emery
keywords: adolescent; athletic injuries; body composition; body mass index; risk factors