Using a smartphone app to increase exercise in people at risk for Parkinson's disease

This trial is testing whether a smartphone app can help people at high risk for Parkinson's disease increase their daily physical activity over 24 months. You would use the app to track and gradually build up your exercise—either aiming for a larger increase in activity or a smaller one, depending on which group you're randomly assigned to. The researchers want to see if more exercise might slow down or prevent Parkinson's disease from developing.

Parkinson's disease is growing rapidly, and treatments work best in early stages before the disease progresses too far. This study focuses on people with isolated REM sleep behavior disorder, which is a strong sign someone may develop Parkinson's disease later. The researchers believe that starting exercise early—before symptoms appear—might be more effective at slowing the disease than waiting until it fully develops.