PeerJ Author 135 Points Contributions by role Author 135 Contributions by subject area Global Health Infectious Diseases Psychiatry and Psychology Public Health Thomas P Olson PeerJ Author Summary Global Health Infectious Diseases Psychiatry & Psychology Public Health PeerJ Contributions Articles 1 March 11, 2021 The association between prior physical fitness and depression in young adults during the COVID-19 pandemic—a cross-sectional, retrospective study Yaoshan Dun, Jeffrey W. Ripley-Gonzalez, Nanjiang Zhou, Qiuxia Li, Meijuan Chen, Zihang Hu, Wenliang Zhang, Randal J. Thomas, Thomas P. Olson, Jie Liu, Yuchen Dong, Suixin Liu https://doi.org/10.7717/peerj.11091 PubMed 33763311