AUTHOR=Zhang Ting , Li Ming , Zhang Feng , Yang Xiaofang , Sun Pengwei , Yin Xiaojian , Liu Yuan , Guo Yaru TITLE=Physical activity in adolescents of different family socioeconomic status: the moderating role of gender JOURNAL=Frontiers in Pediatrics VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2025.1559554 DOI=10.3389/fped.2025.1559554 ISSN=2296-2360