["To determine the effects of a 12-month community-based tango dance program on activity participation among individuals with Parkinson's disease (PD).", 'Randomized controlled trial with assessment at baseline, 3, 6, and 12 months.', 'Intervention was administered in the community; assessments were completed in a university laboratory.', 'Volunteers with PD (n=62) enrolled in the study and were randomized to a treatment group; 10 participants did not receive the allocated intervention, and therefore the final analyzed sample included 52 participants.', 'Participants were randomly assigned to the tango group, which involved 12 months of twice-weekly Argentine tango dance classes, or to the no intervention control group (n=26 per group).', 'Current, new, and retained participation in instrumental, leisure, and social activities, as measured by the Activity Card Sort (with the dance activity removed).', 'Total current participation in the tango group was higher at 3, 6, and 12 months compared with baseline (Ps≤.008), while the control group did not change (Ps≥.11). Total activity retention (since onset of PD) in the tango group increased from 77% to 90% (P=.006) over the course of the study, whereas the control group remained around 80% (P=.60). These patterns were similar in the separate activity domains. The tango group gained a significant number of new social activities (P=.003), but the control group did not (P=.71).'] Is community-based Argentine tango dance program associated with increased activity participation among individuals with Parkinson 's disease?