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Staying active pays off big for Parkinson's patients. A seven-year study of 294 people with mild-to-moderate Parkinson's disease found that higher physical activity levels were linked to slower declines in both motor function and cognitive ability. Those exercising more than 8 hours per week showed virtually no average cognitive decline — and duration of activity appeared to matter more than intensity.
Staying active pays off big for Parkinson's patients. A seven-year longitudinal study published in Neurology found that people with mild-to-moderate Parkinson's disease (PD) who were more physically active experienced significantly slower declines in both motor function and cognitive ability. The study tracked 294 participants (mean age 66.4 years) enrolled in the Cincinnati Cohort Biomarker Program, measuring weekly activity across moderate (brisk walking, doubles tennis, household chores) and vigorous (jogging, fast cycling, shoveling) categories.
Crucially, the benefits appeared to be driven more by total activity duration than intensity — meaning getting moving consistently matters more than pushing hard. Researchers also noted that recent physical activity remained protective even after accounting for activity levels from the prior decade. That said, the study is observational, so causation cannot be established.
By the Numbers:
Why it matters: No drug has yet been proven to modify PD's course, making lifestyle interventions like exercise especially valuable. The study's long follow-up fills a critical gap in the literature — and gives clinicians a compelling reason to routinely encourage patients with PD to stay physically active.
