Scientists discover a surprising double benefit of exercise for Parkinson’s — SkimNews
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- A study published in Neurology tracked 294 adults with mild to moderate Parkinson's disease for up to seven years, measuring their self-reported physical activity and annual symptom progression.
- The most active group (over 8 hours of moderate/vigorous activity weekly) showed almost no average cognitive decline (0.007 points/year) on a 30-point test, compared to a 0.478-point annual decline in the least active group.
- Movement symptoms also worsened more slowly for the most active, with their symptom scores decreasing by 0.783 points per year, while the least active group's scores increased by 0.143 points annually.
- Researchers led by Dong-Woo Ryu found the association held across multiple activity measures—total time, overall volume, and vigorous activity time—even after adjusting for age, sex, and disease duration.
- The study emphasizes a correlation, not causation, and notes a key limitation: activity levels were self-reported, not directly measured.
- The findings suggest that sustained, long-term physical activity may offer dual protective benefits against the progression of Parkinson's disease.
Why it matters: For the nearly one million people in the U.S. living with Parkinson's, this evidence strengthens the case for maintaining physical activity as a core part of disease management, potentially preserving independence and cognitive function longer. It shifts clinical focus toward sustained lifestyle interventions alongside pharmacological treatments.
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