Study on the influence mechanism of sports on adolescent depression under the background of physical-medical integration

The "Healthy China 2030" plan outlines that strengthening the integration of physical and medical medicine and strengthening the adolescent mental health service system aims to promote the physical and mental health development of Chinese adolescents. In this paper, the causes of adolescent depression are sorted out from the aspects of physiological, psychological and social environment, and then the intervention mechanism of sports to improve adolescent depression is deeply explored. Studies have shown that physical activity improves the level of depressive symptoms by regulating factors such as central monoamine neurotransmitters, central inflammatory response, HPA axis activity, expression of hippocampal nerve and neurotrophic factors, and self-efficacy. Suggestions: Focusing on the different effects of aerobic exercise on depressive symptoms, innovative development of school sports should be carried out to promote the improvement of depressive symptoms in adolescents; Combined with sports can regulate emotional self-efficacy, scientifically and reasonably set up physical activity content, enhance students' self-efficacy, and reduce adolescents' depressive symptoms; Combined with sports can effectively improve the cognitive function of patients with depression, and choosing the appropriate physical activity can improve the improvement of cognitive function, thereby improving depressive symptoms.