and the SHAPE-SCI Research TeamStudy design: Secondary cross-sectional analyses of a cohort. Objectives: 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). Setting: Community (Ontario, Canada). Methods: Participants with SCI (n¼695) 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 (n¼342) 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 (b summer ¼0.14, Po0.05). This pattern was observed for exercise (b summer ¼0.16, Po0.05; R 2 change¼0.018) but not for sport (b summer ¼0.076, P¼0.68; R 2 change¼0.014). Conclusion: Individuals with SCI report less exercise and total LTPA accrued during the winter months; sport was found to be an exception to this case. Spinal Cord (2012) 50, 507-511; doi:10.1038/sc.2012.11; published online 6 March 2012Keywords: spinal cord injury; season; leisure-time physical activity; exercise after injury; sport participation INTRODUCTION A substantial body of evidence supports the relationship between moderate-to-vigorous leisure-time physical activity (MV-LTPA); the physical activities that individuals engage in during their spare time, such as going to the gym or playing a sport, 1 and decreased morbidity and mortality among individuals with spinal cord injury (SCI). 2,3 Indeed, MV-LTPA offers many physical benefits for individuals with SCI such as increased muscular strength and decreased muscular atrophy 3 along with an increased sense of well-being and happiness, and reduced pain. 3,4 Despite these benefits of MV-LTPA, a growing body of evidence suggests that many individuals with SCI are sedentary; approximately 50% participate in no LTPA whatsoever. 5 This low participation rate is often attributed to many factors such as poor weather, lack of motivation, time and access to facilities for activity. 6 Although people with SCI frequently cite weather as a physical activity barrier, 7 there is no research, to our knowledge, that has specifically addressed and quantified the influence of weather as a barrier to MV-LTPA access for this population. Understanding the impact of weather on MV-LTPA participation among people with SCI will enable practitioners to better focus interventions to increase MV-LTPA during the times of the year that individuals struggle to be active. This topic is ...