title: Risk factors for injuries in football.
abstract: BACKGROUND
  The injury risk in football is high, but little is known about causes of injury.
  
  
  OBJECTIVE
  To identify risk factors for football injuries using a multivariate model.
  
  
  METHODS
  Prospective cohort study.
  
  
  METHODS
  Participants were 306 male football players from the two highest divisions in Iceland. Before the 1999 football season started, the following factors were examined: height, weight, body composition, flexibility, leg extension power, jump height, peak O(2) uptake, joint stability, and history of previous injury. Injuries and player exposure were recorded throughout the competitive season.
  
  
  RESULTS
  Older players were at higher risk of injury in general (odds ratio [OR] = 1.1 per year, P = 0.05). For hamstring strains, the significant risk factors were age (OR = 1.4 [1 year], P < 0.001) and previous hamstring strains (OR = 11.6, P <0.001). For groin strains, the predictor risk factors were previous groin strains (OR = 7.3, P = 0.001) and decreased range of motion in hip abduction (OR = 0.9 [1 degrees ], P = 0.05). Previous injury was also identified as a risk factor for knee (OR = 4.6) and ankle sprains (OR = 5.3).
  
  
  CONCLUSIONS
  Age and previous injury were identified as the main risk factors for injury among elite football players from Iceland.
authors.affiliation: Oslo Sports Trauma Research Center, University of Sport & Physical Education, Oslo, Norway.
authors.forename: Arni
authors.initials: A
authors.lastname: Arnason
authors.forename: Stefan B
authors.initials: SB
authors.lastname: Sigurdsson
authors.forename: Arni
authors.initials: A
authors.lastname: Gudmundsson
authors.forename: Ingar
authors.initials: I
authors.lastname: Holme
authors.forename: Lars
authors.initials: L
authors.lastname: Engebretsen
authors.forename: Roald
authors.initials: R
authors.lastname: Bahr
mesh_terms: D000293:Adolescent; D000328:Adult; D000886:Anthropometry; D001265:Athletic Injuries / Q000453:epidemiology / Q000209:etiology*; D005080:Exercise Test; D006801:Humans; D007055:Iceland / Q000453:epidemiology; D016015:Logistic Models; D008297:Male; D011446:Prospective Studies; D012307:Risk Factors; D012916:Soccer / Q000293:injuries*