title: [Prevalence of sport injuries, sport participation and drop out due to injury in young adults].
abstract: BACKGROUND
  Sport participation has increased during the past few decades, with accompanying rise in sport injuries. The purpose of this study was to assess the prevalence of sport injuries, and drop-out due to them along with possible risk factors (hours of sports participation, sex, age, aerobic fitness and body composition).
  
  
  METHODS
  A retrospective, cross-sectional design was used and the 457 participants were 17 and 23 years old. Height, weight, body fat, lean soft tissue, bone mass, and aerobic fitness (W/kg) were measured. Participation in sports and physical training, and the prevalence of sport injuries and drop-out were estimated using questionnaires.
  
  
  RESULTS
  Four hundred and forty participants (96%) had at some time point participated in organized sports, but 277 (63%) were no longer practicing, more commonly (p=0.058) among girls (67.6%) than boys (58.8%). Thirty-seven (8.4%) dropped-out due to sport injuries. Of those participating in organized sports for the past 12 months, 51% required medical assistance at least once because of sport injuries. Multiple regression analysis revealed 5-fold increased risk for requiring medical assistance among those practicing more than 6 hours per week compared to those who practiced 6 hours or less (OR=5.30, 95% CI: 3.00 to 9.42).
  
  
  CONCLUSIONS
  Youth sport injuries are a significant problem that can cause drop-out from participation in sport. More research is needed to better understand the impact of risk factors in order to promote prevention and ensure evidence-based training.
authors.forename: Margrét H
authors.initials: MH
authors.lastname: Indriðadóttir
authors.forename: Þórarinn
authors.initials: Þ
authors.lastname: Sveinsson
authors.forename: Kristján Þór
authors.initials: KÞ
authors.lastname: Magnússon
authors.forename: Sigurbjörn Árni
authors.initials: SÁ
authors.lastname: Arngrímsson
authors.forename: Erlingur
authors.initials: E
authors.lastname: Jóhannsson
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D000367:Age Factors; D001265:Athletic Injuries / Q000175:diagnosis / Q000453:epidemiology* / Q000503:physiopathology / Q000628:therapy; D001823:Body Composition; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007055:Iceland / Q000453:epidemiology; D008297:Male; D016017:Odds Ratio; D010809:Physical Fitness; D015995:Prevalence; D012044:Regression Analysis; D012189:Retrospective Studies; D012307:Risk Factors; D012737:Sex Factors; D011795:Surveys and Questionnaires; D013997:Time Factors; D055815:Young Adult; D000067009:Youth Sports