Background People with intellectual disability face a number of barriers to participation in physical activity. This paper aimed to determine rates of sport and physical activity participation in an Australian sample of adults with intellectual disability, compared with rates of participation in the general Australian population. A secondary aim was to investigate factors that may contribute to participation of adults with intellectual disability. Method Participants were part of the Australian Child to Adult Development (ACAD) study, consisting of a community sample with intellectual disability (n = 305), groups of adults with autism (n = 94), Down syndrome (n = 64), fragile X syndrome (n = 52), Williams syndrome (n = 45), and Prader–Willi syndrome (n = 30). Participation in sport/physical activity was reported over the past 3 months. Rates of participation were reported for adults with intellectual disability and compared with rates in a general Australian population sample. The relationship between participation in physical activity and age, degree of intellectual disability, physical mobility, living situation, socio‐economic disadvantage, and behaviour and emotional problems were also conducted. Results Participants in the ACAD community sample with intellectual disability participated in sport/physical activity at lower rates than the general Australian population (42% compared with 71%). Having no physical mobility impairment was significantly associated with higher rates of participation. Those with Down syndrome participated in sport/physical activity at higher rates than the community sample with intellectual disability, while no difference in sport/physical activity participation was observed in the groups with autism or other syndromes. Conclusion Australian adults with intellectual disability participate in sport and physical activity at lower rates than the general population. Having a physical mobility impairment was associated with lower rates of participation. However, people living in supported accommodation were more likely to participate than those in other living situations. Having Down syndrome was associated with a higher participation rate than the community sample.

Background: This systematic review aimed to explore the effects of sport and physical activity on behaviour and emotional problems, mental health and psychosocial well-being of children and adolescents with intellectual disability.Method: Five databases were searched systematically (ERIC, MEDLINE, PsycINFO, SportDISCUS and SCOPUS), up to 28 February 2021. Thirty-two studies met criteria for inclusion.Results: Studies in this review included case studies (n = 15), treatment trials (n = 14), cross sectional studies (n = 2) and a cohort study (n = 1). Evidence was positive, though high risk of bias in treatment trials (7 of 14 rated high) meant generalisability of results was limited. Conclusions:The available evidence suggests a positive relationship between physical activity and improved behaviour and emotional problems, mental health and psychosocial well-being; however, more robust randomised controlled trials are required to confirm this.

Background This systematic review aimed to explore how adults with autism participate in the community, the impact of community participation on quality of life and mental health, and factors that support and hinder participation. Method A systematic review was conducted including studies published from inception to 17 January 2021. Results Sixty‐three reports were included, reporting on 58 studies. Solitary activities, organised group activities, community activities, religious groups and online social participation were identified. The relationship between community participation and quality of life was examined. Barriers and facilitators to increased community participation were identified. Most studies had a moderate to high risk of bias. Conclusion Adults with autism participate in a range of independent and community activities. The impact of community participation on quality of life and mental health warrants further exploration. Future studies should find effective ways of supporting adults with autism to participate in the community.