This review characterizes physical activity behavior in youth with intellectual disability (ID) and identifies limitations in the published research. Keyword searches were used to identify articles from MEDLINE, EBSCOhost Research Databases, Psych Articles, Health Source, and SPORT Discus, and ProQuest Dissertations and Theses up to June 2007. Data were extracted from each study using a template of key items that included participant population, study design, data source, and outcome measure. Nineteen manuscripts met the inclusion criteria. Findings were mixed, with various studies indicating that youth with ID have lower, similar, and higher physical activity levels than peers without disabilities. Only two studies provided enough information to determine that some youth with ID were meeting minimum physical activity standards. Significant methodological limitations prohibit clear conclusions regarding physical activity in youth with ID.

Interpretive ethnography was used as a framework to examine perceptions of physical activity behavior of 12 adults with mild mental retardation. Four parents and two job supervisors also agreed to participate. Multiple data sources included in-depth interviews, diaries, accelerometry, and informal observations. Participants reported many physical activity barriers, benefits, and leisure choices similar to the general population; however, two particularly salient themes related to negative influences and lack of guidance from support systems were apparently unique to this group. Results suggest that (a) adults with mental retardation need specially designed physical activity education and training programs and (b) supports system providers should be educated regarding the importance of physical activity to health for these individuals.

Objective. To describe interventions designed to promote physical activity for youth with intellectual disabilities. Materials and methods. A systematic review of nine databases until January 31, 2015 identified 213 citations. The inclusion criteria were: a) the study sample consisted of youth with intellectual disabilities, b) the study implemented an intervention to initiate, increase, or maintain physical activity, and c) quantitative or qualitative data were used to report the effectiveness of the intervention. Eleven articles from the 213 citations met this criterion. Results. Nine studies reported significant increases in physical activity behavior. Conclusions. Conclusions cannot be made regarding intervention components that impacted outcome variables, if the observed effects were specifically due to the intervention or if interventions could be maintained long-term. To advance the knowledge base in this area, a concerted effort should be made to increase rigor in study conceptualization and research design.