AUTHOR=Xu Chunyan , He Ling , Tu Yansong , Guo Canhui , Lai Hurong , Liao Caifeng , Lin Chuyang , Tu Huaijun TITLE=Longitudinal analysis of insulin resistance and sarcopenic obesity in Chinese middle-aged and older adults: evidence from CHARLS JOURNAL=Frontiers in Public Health VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2024.1472456 DOI=10.3389/fpubh.2024.1472456 ISSN=2296-2565