title: Self-reported injury and physical activity levels: United States 2000 to 2002.
abstract: OBJECTIVE
  The aim of the study is to compare national estimates of the incidence of self-reported all-cause and activity-specific injuries in adults with differing leisure-time physical activity levels.
  
  
  METHODS
  Data were analyzed from the 2000 to 2002 National Health Interview Survey. Leisure-time physical activity levels were categorized as active, insufficiently active, and inactive.
  
  
  RESULTS
  Age-adjusted incidences of all-cause injury did not differ by leisure-time physical activity level (active, 89.3/1000; 95% confidence interval [CI], 81.8-96.8; insufficiently active, 81.6/1000; 95% CI, 73.1-90.1; and inactive, 86.3/1000; 95% CI, 78.6-93.9). Active respondents (29.4/1000; 95% CI, 25.2-33.6) had a greater incidence of injury related to sport and leisure-time activities than inactive respondents (15.2/1000; 95% CI, 12.1-18.3), whereas inactive respondents (71.1/1000; 95% CI, 63.9-78.2) had a greater incidence of injury related to nonsport and non-leisure-time activities than active respondents (59.9/1000; 95% CI, 53.6-66.2). Results were unchanged after multivariate control for confounding factors.
  
  
  CONCLUSIONS
  Although the incidence of sport and leisure-time injuries is associated with participation in leisure-time physical activity, no association was observed between leisure-time physical activity and overall injuries.
authors.affiliation: National Centers for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30345, USA. scarlson1@cdc.gov
authors.forename: Susan A
authors.initials: SA
authors.lastname: Carlson
authors.forename: Jennifer M
authors.initials: JM
authors.lastname: Hootman
authors.forename: Kenneth E
authors.initials: KE
authors.lastname: Powell
authors.forename: Caroline A
authors.initials: CA
authors.lastname: Macera
authors.forename: Gregory W
authors.initials: GW
authors.lastname: Heath
authors.forename: Julie
authors.initials: J
authors.lastname: Gilchrist
authors.forename: C Dexter
authors.initials: CD
authors.lastname: Kimsey
authors.forename: Harold W
authors.initials: HW
authors.lastname: Kohl
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001265:Athletic Injuries / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D015444:Exercise; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008297:Male; D008875:Middle Aged; D017678:Sex Distribution; D011795:Surveys and Questionnaires; D014481:United States / Q000453:epidemiology