title: An investigation of seasonal variation in leisure-time physical activity in persons with spinal cord injury.
abstract: METHODS
  Secondary cross-sectional analyses of a cohort.
  
  
  OBJECTIVE
  To examine seasonal variation in total moderate-to-vigorous leisure-time physical activity (MV-LTPA), exercise and sport participation in a cohort of individuals with spinal cord injury (SCI).
  
  
  METHODS
  Community (Ontario, Canada).
  
  
  METHODS
  Participants with SCI (n=695) completed telephone interviews regarding their involvement in MV-LTPA along with social cognitive predictors of MV-LTPA. Logistic regression was used to predict the impact of season on participation in MV-LTPA, exercise and sport. Hierarchical linear regression was used to examine seasonal variation in min per day of MV-LTPA in the active sub-cohort (n=342) with a specific focus on exercise (for example, wheeling), and sport (for example, sledge hockey).
  
  
  RESULTS
  Logistic regressions revealed that season did not predict whether participants engaged in MV-LTPA, exercise or sport. Linear regressions revealed that individuals in the active sub-cohort who completed the questionnaire during the winter reported engaging in less MV-LTPA than those who were interviewed in summer (βsummer=0.14, P<0.05). This pattern was observed for exercise (βsummer=0.16, P<0.05; R2 change=0.018) but not for sport (βsummer=0.076, P=0.68; R2 change=0.014).
  
  
  CONCLUSIONS
  Individuals with SCI report less exercise and total LTPA accrued during the winter months; sport was found to be an exception to this case.
authors.affiliation: School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada. marie-josee.perrier@queensu.ca
authors.forename: M J
authors.initials: MJ
authors.lastname: Perrier
authors.forename: A E
authors.initials: AE
authors.lastname: Latimer-Cheung
authors.forename: K A M
authors.initials: KA
authors.lastname: Ginis
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D009864:Ontario / Q000453:epidemiology; D015995:Prevalence; D012621:Seasons; D013119:Spinal Cord Injuries / Q000453:epidemiology* / Q000523:psychology; D013177:Sports / Q000706:statistics & numerical data*