“…After screening, a total of 112 studies were included: 1 Chinese, 12 English, and 99 Korean studies. As numerous indicators were retrieved from a single study and one study included two intervention groups ( Kim and Yang, 2017 ), studies containing multiple indicators were combined, resulting in 45 studies (112 effect value), including one Chinese study ( Luo, 2017 ), 6 English studies ( Kim, 2015 ; Jung et al, 2016 ; Roh et al, 2020 ; Baek et al, 2021 ; Kim et al, 2021 ; Lee et al, 2021 ), and 38 Korean studies ( Choi, 2000 ; Han et al, 2007 ; Kang, 2007 ; 2009 ; OH and Kim, 2007 ; Byeon et al, 2008 ; Kim and Kim, 2008 ; Kim Y H, 2009a ; 2010 ; 2016 ; 2021 ; Kim H. T, 2009 ; Park et al, 2009 ; 2010 ; Ryoo et al, 2009 ; Ko, 2010 ; Kwon et al, 2010 ; 2011a ; 2011b ; Lee, 2010 ; 2020 ; Shin, 2010 ; Nam et al, 2012 ; 2013 ; Cho and Jeoung, 2013 ; Jang et al, 2013 ; Cho and Yoon, 2014 ; Jeong et al, 2014 ; Lee and Choi, 2014 ; Kim and Yang, 2017 ; Lee et al, 2017 ; 2018 ; 2020 ; Kim and Lee, 2018 ; Koh et al, 2018 ; Ha et al, 2020 ; Jeong, 2020 ; Lee and Kim, 2021 ). A total of 1079 subjects were included among the studies, including 539 and 540 subjects in the control and intervention groups, respectively.…”