AUTHOR=Liu Yingying , Nie Zizheng , Dong Haokai , Shou Linpei , Xu Jiaoyang , Cao Qinglong , Shi Yitian , Wu Chenyang , Zhang Mu , Yang Jun , Han Shufen TITLE=The mediating role of sleep quality on the relationship between physical activity and social anxiety disorder among Chinese college freshmen JOURNAL=Frontiers in Psychology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2025.1599041 DOI=10.3389/fpsyg.2025.1599041 ISSN=1664-1078 ABSTRACT=ObjectivesSocial anxiety disorder (SAD) profoundly impacts the wellbeing of college students, both physically and psychologically. This study aimed to examine the mediating role of sleep quality on the relationship between physical activity and SAD among Chinese college freshmen.MethodsThis was a cross-sectional study enrolling 1,408 participants through convenience sampling. Participants self-reported their physical activity, sleep quality, and social anxiety status using an electronic questionnaire.ResultsThe overall prevalence of SAD was 33.05%. A significant negative association was observed between physical activity and SAD (adjusted β = −0.054, 95% CI: −0.053 to −0.001). Mediation analysis indicated that sleep quality may mediated 24.33% of the association between physical activity and SAD (indirect effect estimate = −0.009, direct effect estimate = −0.028, p < 0.01).ConclusionsLess physical activity is associated with SAD among Chinese college freshmen, and this relationship is partially mediated by poor sleep quality. It is recommended that educational institutions implement programs to promote regular physical exercise and enhance sleep quality to mitigate the impacts of SAD in this population.