Effects of physical exercise on Chinese college students’ learning fatigue: the chain mediating role of psychological capital and achievement motivation

(1) Physical exercise can significantly positively predict psychological capital and achievement motivation, and significantly negatively predict learning fatigue; (2) The direct and indirect effects of physical exercise on college students' learning fatigue are significant. Physical exercise can significantly predict college students' learning fatigue through the independent mediating effect of psychological capital and achievement motivation, as well as through the chain mediating effect of psychological capital and achievement motivation.