AUTHOR=Meng Ran , Dong Chen TITLE=Navigating exercise attitudes and emotional positivity in adulthood during the COVID-19 pandemic: evidence from Shandong Province JOURNAL=Frontiers in Psychology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2025.1472541 DOI=10.3389/fpsyg.2025.1472541 ISSN=1664-1078