AUTHOR=Yang Ting , Li Xinxin , Wang Xinyu , Zhou Jingjie , Chen Wei TITLE=The mediating role of life satisfaction in the relationship between physical exercise and depressive symptoms among middle-aged and elderly individuals JOURNAL=Frontiers in Public Health VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1511509 DOI=10.3389/fpubh.2025.1511509 ISSN=2296-2565