title: Musculoskeletal injury in the masters runners.
abstract: OBJECTIVE
  To determine if injury patterns and risk factors for injury differ between masters and younger runners.
  
  
  METHODS
  Retrospective survey.
  
  
  METHODS
  Hood to Coast running relay, Oregon, USA.
  
  
  METHODS
  A total of 2886 runners consented to participate and completed the survey. Ninety-four (2712/2886) percent completed the survey electronically and 6% (174/2886) manually. Master runners (>or=40 years) made up 34% of the population.
  
  
  METHODS
  The survey was distributed to all participants in the largest running relay in North America. Runners reported on training patterns, injury location, and diagnosis over the previous year.
  
  
  METHODS
  Descriptive statistics and chi analysis were used to detect differences in injury rate and location between masters and younger runners. Multivariate logistic regression models were used to identify risk factors for injury for each group.
  
  
  RESULTS
  The injury rate for the entire population was 46%. Significantly more masters runners were injured than younger runners (P<0.05). More masters runners suffered multiple injuries than younger runners (P<0.001). Significantly more masters runners were male, had 7 or more years of running experience, run more than 30 miles/wk, 6 or more times/week and wear orthotics than younger runners (P<0.001). The knee and foot were the most common locations of injury for both groups. The prevalence of soft-tissue-type injuries to the calf, achilles, and hamstrings was greater in masters runners than their younger counterparts (P<0.001). Younger runners suffered more knee and leg injuries than masters runners (P<0.005). Running more times/wk increased the risk of injury for both groups.
  
  
  CONCLUSIONS
  There were subtle differences in injury rate and location between masters runners and younger runners, which may reflect differences in training intensity.
authors.affiliation: Orthopaedic and Sports Medicine Clinic of Nova Scotia, 5595 Fenwick Street, Ste 311, and Department of Surgery, Division of Orthopaedics, Dalhousie University, Halifax, Nova Scotia, Canada. kmckean@dal.ca
authors.forename: Kelly A
authors.initials: KA
authors.lastname: McKean
authors.forename: Neil A
authors.initials: NA
authors.lastname: Manson
authors.forename: William D
authors.initials: WD
authors.lastname: Stanish
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D007869:Leg Injuries / Q000175:diagnosis / Q000453:epidemiology; D035002:Lower Extremity / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009141:Musculoskeletal System / Q000293:injuries*; D012189:Retrospective Studies; D012420:Running / Q000293:injuries*