AUTHOR=Liu Kai , Guo Cheng , Xie Juan , Cheng Liming 

TITLE=Outdoor activity time and depression risk among adults aged 40 years and older: a cross-sectional analysis of NHANES 2011–2018 data

JOURNAL=Frontiers in Psychology

VOLUME=16

YEAR=2025

URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2025.1506168

DOI=10.3389/fpsyg.2025.1506168

ISSN=1664-1078