People with Parkinson’s disease who reported more than eight hours of physical activity per week had slower declines in movement and cognitive function compared to those who exercise less, according to a study published October 7, 2026, in the journal Neurology.
Seven-Year Study of Parkinson’s Progression
Researchers tracked 294 participants with mild to moderate Parkinson’s disease for up to seven years to measure how exercise influences long-term health. By conducting annual motor and cognitive evaluations, the team observed that activity levels were linked to the rate at which symptoms worsened. Participants were categorized into three groups based on their weekly activity: a low group (up to four hours), a medium group (four to eight hours), and a high group (more than eight hours).
The study found that individuals in the high-activity group experienced the slowest decline in cognitive scores—an average annual decrease of just 0.007, compared to a 0.478 decrease in the low-activity group. Movement symptoms followed a similar pattern. After adjusting for age, sex, and the duration of the disease, the data suggested that higher levels of activity correlate with a slower progression of both cognitive and physical disability.
Defining Physical Activity and Its Benefits
The research team defined physical activity to include a broad spectrum of daily and recreational movements. Moderate activity included brisk walking, light swimming, and household chores like vacuuming or mowing the lawn. Vigorous activity encompassed more intense efforts, such as jogging, fast bicycling, singles tennis, and carrying heavy loads.
While the study found associations, authors emphasized that these results should not be interpreted as definitive proof that exercise directly causes slower disease progression. While our study found small differences between activity levels, these differences may become more meaningful over time,
said study author Dong-Woo Ryu, MD, PhD, of the University of Cincinnati. Since participants generally had good thinking and memory skills at the start of the study, our results should be interpreted with caution, and further studies are needed.
Total Activity Time Versus Intensity
A notable finding of the research involves the role of total activity volume compared to intensity. When researchers analyzed the data, they discovered that total time spent being active was consistently linked to slower declines. Interestingly, vigorous activity on its own did not show the same strong association, suggesting that the cumulative amount of time spent moving may be more critical for patients than the intensity of the exercise itself.
This paper exists because hundreds of people agreed to keep coming back,
said coauthor Alberto Espay, MD. That long-term partnership between participants and the research team is really the infrastructure behind longitudinal science.
Limitations and Future Considerations
Despite the associations, the researchers identified limitations in the study’s design. Because physical activity was self-reported by participants, there is a risk that the data may not be entirely accurate. The researchers also noted that individuals whose disease progression was already slower might have found it easier to maintain high levels of physical activity, potentially influencing the results.
“The possible benefits of physical activity for people with Parkinson’s disease may depend on how long they stay active and whether they continue exercising over time.”
Dong-Woo Ryu, MD, PhD, University of Cincinnati