Participation in home, school, and community activities has a positive impact on children’s health, development, and wellbeing.1,2 Through participation, children acquire skills, achieve physical and mental health, and develop social networks that are crucial for their transition to adulthood.3 It is important, therefore, to develop knowledge about activity patterns of children and youth, as well as the factors that impact these patterns. Environmental factors are of particular importance because they are potentially modifiable. The participation of children and youth with disabilities, however, is restricted in comparison with their typically developing peers.4-8 Striking differences were found in a sample, reanalyzed in this study, of 576 children and youth living in Canada and the United States; 37% of children and youth with disabilities never took part in organized physical activities in the community, as compared with only 10% among their typically developing peers.9 In Europe, a large comparative study10 of more than 800 children with cerebral palsy and the general population (nZ2939) revealed similar discrepancies.