AUTHOR=Liu Yanchang , Cui Junling , Luo Xin , Wang Zhuzhu , Shen Ziyi , Fang Yan , Li Chengcheng , Hong Jingfang TITLE=Longitudinal association between handgrip strength and depressive symptoms in middle-aged and older Chinese adults: mediating role of functional limitation JOURNAL=Frontiers in Public Health VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1496641 DOI=10.3389/fpubh.2025.1496641 ISSN=2296-2565