Fig. 1

Experimental design. Twenty-four participants with mild-to-moderate PD were randomly assigned to Groups A and B. Participant performance was assessed before intervention (baseline) and at weeks 6 and 12. Group A participated in the interactive video-game-based (IVGB) exercise program during the first 6 weeks, followed by a 6-week period without exercise. Group B participants did the reverse, starting with 6 weeks without exercise followed by 6 weeks of the IVGB exercise program. SF-36, 36-Item Short-Form Health Survey; MFES, Modified Falls Efficacy Scale; BBS, Berg Balance Scale; MDRT, Multi-Directional Reach Test; MSL, Maximum Step Length