AUTHOR=Li Shixin , Zhang Jiayi , Yang Yonghong TITLE=Correlation between the physical activity volume and cognitive and mental capacity among older adult people in China: a cross-sectional study based on the 2020 CHARLS database JOURNAL=Frontiers in Public Health VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2024.1462570 DOI=10.3389/fpubh.2024.1462570 ISSN=2296-2565