“…Among the 22 studies, the majority were randomized controlled trials (n=13) (Ackermann et al, 2014; Azar et al, 2015; Bennett et al, 2010; Block et al, 2015; Estabrooks and Smith-Ray, 2008; Fischer et al, 2016; Fukuoka et al, 2015; Leahey et al, 2014; Ma et al, 2013; Tate et al, 2003; Thomas et al, 2015; Wing et al, 2010). Other study designs were single group intervention studies (n=5) (McTigue et al, 2009; Pagoto et al, 2015; Sepah et al, 2014; Skoyen et al, 2015; Thomas and Wing, 2013), non-randomized controlled trials (n=2) (Kramer et al, 2010; Vadheim et al, 2010), a comparative effectiveness trial (n=1) (Piatt et al, 2013), and a retrospective cohort study (n=1) (Ahrendt et al, 2014).…”