Blood Flow Restriction for Optimizing Balance in Parkinson's Disease

This study is testing whether a technique called blood flow restriction (BFR) training — where a cuff is used to mildly restrict blood flow to the limbs during exercise — can help improve balance in people with Parkinson's disease. The goal is to make exercise more effective even at lower intensities. **You may be eligible if...** - You are between 40 and 85 years old - You have been diagnosed with Parkinson's disease - Your Parkinson's is at a moderate stage (Hoehn and Yahr stage 2–4) - Your thinking and memory are adequate (mini-mental status score 23 or above) **You may NOT be eligible if...** - You have cardiovascular disease, uncontrolled high blood pressure, dizziness when standing, blood clots (deep-vein thrombosis), or varicose veins - You have poor circulation in your legs (low ankle-brachial index) - You have another neurological disorder affecting your balance or movement - You have significant joint or musculoskeletal problems that prevent exercise Talk to your doctor to see if this trial is right for you.