Abstract
The general-domain effect of physical exercise-induced cognitive gains in behavioral outcomes is well-documented, but a consensus on the neural correlates remains elusive. This meta-analysis aims to identify the neural correlates of physical exercise-induced general cognitive gains by examining task-related brain activation consistently modulated by physical exercise and its relationship to those gains. Our analysis of 52 studies with 1,503 participants shows that physical exercise enhances task performance (Hedges' g = 0.271) and consistently increases task-related brain activation primarily in the bilateral precuneus. These increases in task-related brain activation correlate positively with task performance improvements. Notably, physical exercise intensity, adherence, and social environment significantly modulate task-related brain activation changes induced by physical exercise. This meta-analysis offers an unprecedented comprehensive assessment of how physical exercise modulates task-related brain activation changes, providing neural evidence to support the general-domain effects on cognitive function induced by physical exercise.
Published Version
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