Differences in salient beliefs associated with voluntary exercise training among South Korean firefighters before and after COVID-19
Junhye Kwon , Joohee Choi , Juhyuk Kwon , Chung Gun Lee , Dong-Il Seo , Wook Song , Jung-Jun Park , Han-Joon Lee , Hyun Joo Kang , Yeon Soon Ahn
BMC Public Health