Exercise frequency and consistency, but not duration, were positively associated with cognitive flexibility among Chinese university students, with Perceived Exercise-Related Cognitive Benefits and psychological well-being serving as significant parallel mediators and exercise intensity acting as a moderator.
Exercise frequency was positively associated with cognitive flexibility.
Exercise consistency was positively associated with cognitive flexibility.
Exercise duration was not significantly associated with cognitive flexibility.
Perceived Exercise-Related Cognitive Benefits (PECB) significantly mediated the associations between exercise frequency and consistency and cognitive flexibility, but not exercise duration.
Psychological well-being significantly mediated the associations between all three exercise dimensions and cognitive flexibility, including exercise duration.
Exercise intensity significantly moderated the associations of both PECB and psychological well-being with cognitive flexibility.
The study was cross-sectional in design, limiting causal inference about the relationships between exercise and cognitive flexibility.
This research suggests that how often students exercise and how consistently they maintain an exercise routine matters more for mental flexibility than how long each exercise session lasts. Among nearly 400 Chinese university students, those who exercised more frequently and more consistently reported greater cognitive flexibility — the ability to switch between tasks and think adaptively — while the length of individual exercise sessions showed no direct relationship with this mental skill. The study also found that two psychological factors help explain why exercise might benefit cognitive flexibility. First, students who believed that exercise improved their thinking (called 'Perceived Exercise-Related Cognitive Benefits') showed stronger links between their exercise habits and cognitive flexibility. Second, students with better overall psychological well-being also showed stronger connections between exercise and cognitive flexibility — and notably, psychological well-being was the only pathway through which exercise duration (session length) was indirectly linked to cognitive flexibility. Additionally, the intensity of exercise amplified these psychological pathways, meaning that more vigorous exercise strengthened the connections between these psychological factors and cognitive flexibility. This research suggests that for university students, building regular exercise habits — even if sessions are not lengthy — may be more beneficial for mental flexibility than occasionally doing very long workouts. The psychological experience of exercise, including feeling that it helps one's thinking and contributing to overall well-being, appears to play an important role in this relationship. Because the study relied on self-reports and a single point-in-time snapshot, future studies tracking students over time or using experimental designs are needed to better understand whether and how exercise causes improvements in cognitive flexibility.
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Upload Your LabsGuo L, Zhang L. (2026). Exercise, Perceived Exercise-Related Cognitive Benefits, and Cognitive Flexibility: A Cross-Sectional Study Among Chinese University Students.. Journal of visualized experiments : JoVE. https://doi.org/10.3791/72959