Fig. 1From: Study in Parkinson’s disease of exercise phase 3 (SPARX3): study protocol for a randomized controlled trialDesign of the Study in Parkinson Disease of Exercise (SPARX3) Trial. The moderate-intensity exercise group is assigned to exercise 4 days a week at 60–65% HRmax, and the high-intensity exercise is assigned to exercise 4 days a week at 80–85% HRmax. The duration of the intervention is 18 months. Months 19 to 24 are observationalBack to article page