For people with Parkinson’s disease, logging more than eight hours of physical activity per week is associated with a slower decline in thinking, memory, and movement symptoms over a seven-year period, according to a study published October 7, 2026, in Neurology, the official medical journal of the American Academy of Neurology. The findings offer new observational data regarding how daily routines might influence the trajectory of a progressive neurodegenerative disorder.
Nearly 300 Patients Tracked Across Seven Years at the University of Cincinnati
Researchers at the University of Cincinnati tracked 294 participants with mild to moderate Parkinson’s disease who had an average age of 66. Over a period of up to seven years, participants completed annual cognitive assessments and symptom evaluations while reporting their weekly physical activity across work, home, and recreational settings. Moderate activities included brisk walking, vacuuming, and mowing the lawn, while vigorous tasks involved jogging, team sports, and carrying heavy loads.
When investigators divided the cohort into three groups based on total movement time, distinct trajectories emerged. The low activity group reported four hours or less per week, the medium group logged four to eight hours, and the high group exceeded eight hours weekly. After adjusting for age, sex, and disease duration, the high group demonstrated slower cognitive decline and less worsening of motor symptoms compared to the low activity cohort.
Total Activity Outpaces Exercise Intensity in the Neurology Findings
A notable distinction in the data centers on duration versus intensity. When researchers separated total activity time from exercise intensity, overall time spent moving remained associated with slower disease progression, whereas vigorous activity on its own did not show the same standalone link. This suggests that the total volume of daily movement may be more important for Parkinson’s patients than how hard they exercise.
Our study found physical activity may have dual benefits, with associations with slower declines in movement and cognition,
said study author Dong-Woo Ryu, MD, PhD, of the University of Cincinnati. Study co-author Alberto Espay, MD, noted that the long-term partnership between patients and researchers made it possible to examine trajectories over seven years rather than relying on a single snapshot in time.
Limitations and Unanswered Questions in Neurodegenerative Research
Despite the documented associations, the study does not establish causation. Researchers emphasize that the findings cannot prove that increased physical activity directly caused slower disease progression. An alternative explanation is reverse causality: individuals whose Parkinson’s progressed more slowly may simply have retained a greater physical capacity to stay active.
Participants self-reported their weekly activity levels, introducing potential reporting inaccuracies. Because the cohort generally started the study with good thinking and memory skills, investigators caution that the results require further validation through additional clinical research.