Can Physical Activity Improve Psychological Problems Predicted by Poor Sleep? A Cross-Sectional Study from a Large Sample

Sleep quality is recognized as an important factor for depression, but suitable physical activity and psychological resilience may relieve depression. However, it remains unknown whether physical activity (PA) and psychological resilience (PR) can reduce the effect of sleep quality on depression. Therefore, a cross-sectional data from Survey of Physical and Mental Health of College Students was used. The Pittsburgh Sleep Quality Index Survey (PSQI), DASS-21, The short International physical activity Questionnaire (IPAQ), CD-RISC-10 were used to collect data. Logistic regression and restricted cubic spline models were used to examine the association of sleep quality and depression. A total of 19184 College Students aged 19.8 years (SD=1.66) were finally included in this study. The results indicated a positive correlation result between sleep quality and depression. Our results also indicate that low sleep quality is a risk factor for depression, and PA, PR can moderate this relationship to some degree.