ObjectiveThis study introduced self-concept and social support as research variables to establish a research mechanism, in order to encourage college students to participate in sports better, relieve or overcome depression.MethodsThe survey was conducted among 1,200 college students in Jiangxi, China. Serial mediation models were used to examine whether self-concept and social support mediated in the effect of physical exercise on depression.ResultsPhysical exercise significantly negatively predicted college depression. Moreover, Self-concept and social support mediate the relationship between physical exercise and depression in college students.ConclusionThis study reveals how physical exercise affects college students’ depression and its mechanism, and the results have certain enlightenment significance for maintaining and promoting college students’ physical and mental health.

Objective: The purpose of this study was to explore the relationship between social support, rumination, emotion regulation self-efficacy (ERSE) and depression in college students, focusing on the mediating effect between social support and depression in college students. Methods: A cross-sectional study of 1433 college students in Jiangxi, China was conducted between October and November 2022. A series of mediation analyses were performed using AMOS24.0 and the PROCESS macro to examine the mediation effects. Results: The study found that depression was significantly positively correlated with rumination, while ERSE was significantly negatively correlated with social support and ERSE. Social support has a direct negative predictive effect on depression in college students. Rumination and ERSE play independent mediating and chain mediating roles in the mechanism of social support affecting college students' depression, with indirect effect values of 0.11, 0.02 and 0.01, respectively. Conclusions: To alleviate and prevent depression in college students, emphasis should be placed on rumination and ERSE in addition to the influence of social support.

The study aims to explore the relationship among mindfulness, depression, meaning in life (MIL) and psychological resilience (PR), and verify whether MIL and PR have a chain mediating effect between mindfulness and depression .1034 college students in a province were investigated by using Adolescent Mindfulness Scale, Depression Scale, Meaning in Life Scale and Psychological Resilience Scale. Hierarchical multiple regression and bootstrap was used to analyze the data and test whether MIL and PR play a chain mediating role between mindfulness and depression among university students.In the present research, the direct effect value of mindfulness on college students' depression was 0.14, and the effect amount was 61%. The effect values of MIL and PR between mindfulness and college students' depression were 0.03 and 0.05, and the effect amount is 13% and 22%.In the meantime, the chain mediating effect of MIL and PR was significant, the effect value is 0.01 and the effect amount is 4%.The effects of mindfulness on depression of university students were mediated by MIL, PR and the chain of MIL and PR.