| 15 | Jackson, von Eye, Fitzgerald, Witt and Zhao, 2011 [28] | N = 482 12, 19 (age average) Boys and girls | Observational | Self-esteem | Harter’s Self-Competence Scale (Harter, 1982) Rosenberg’s self-esteem scale (Rosenberg, 1989) |
| 16 | Jacobson and Melnyk, 2011 [29] | N = 17 9 - 12 Boys and girls | Interventional | Self-control Social skills Self-concept | SSRS (Gresham and Elliott, 1990) |
| 17 | Rehkopf, Laraia, Segal, Braithwaite and Epel, 2011 [30] | N = 2150 9 - 19 Girls | Observational | Self-esteem Self-control | PCSC (Harter, 1985) |
| 18 | Vos, Wit, Pijl, Kruyff, and Houdijk, 2011 [31] | N = 80 8 - 17 Boys and girls | Interventional | Social Competence Social Functioning Self-perception Self-concept | CBCL (Achenbach and Edelbrock, 1991) Youth Self-Report―YSR (Achenbach and Edelbrock, 1991) Teacher Report Form―TRF (Achenbach and Edelbrock, 1991) Competence Scale for Children’―CBSK (Veerman et al., 2007) |
| 19 | Walpole, Dettmer, Morrongiello, McCrindle and Hamilton, 2011 [32] | N = # 10 - 18 Boys and girls | Interventional | Self-concept Social skills Peers interaction | Rosenberg Self-Esteem Scale (Rosenberg, 1965) |
| 20 | Gunnarsdottir, Njardvik, Olafsdottir, Craighead andBjarnason, 2012 [33] | N = 84 7 - 14 Boys and girls | Interventional | Self-control Social skills Self-concept Self-esteem Peers interaction | Piers-Harris Self Concept Scale (Piers, 1984) SSRS (Gresham and Elliott, 1990) The Strengths and Difficulties Questionnaire―SDQ (Steingrimsson and Magnusson, 2008) |
| 21 | Jacobson and Melnyk, 2012 [34] | N = 17 9 - 12 Boys and girls | Interventional | Self-control Social skills Self-concept | SSRS (Gresham and Elliott, 1990) |
| 22 | Laberge, Bush and Chagnon, 2012 [16] | N = 223 11 - 16 Boys and girls | Interventional | Self-esteem Self-control Social competence | Conners-Wells’ Adolescent Self Report Scale-C-W ASRS (Conners et al., 1997) ―adapted version Rosenberg global self-esteem scale (Rosenberg, 1965) |
| 23 | Walpole, Dettmer, Morrongiello, McCrindle and Hamilton, 2013 [35] | N = 40 10 - 18 Boys and girls | Interventional | Self-efficacy | CDSS (Parcel et al., 1995) Weight Efficacy Lifestyle questionnaire (WEL, Clark, Abrams, Niaura, Eaton and Rossi, 1991) |
| 24 | Powell-Young, Zabaleta, Velasco-Gonzalez and Sothern, 2013 [36] | N = 264 14 - 18 Gils | Observational | Self-esteem | Harter’s Self-Perception Profile for Adolescents [SPPA] (Harter, 1988) |
| 25 | Kulik et al., 2014 [37] | N = 36 13 - 17 Girls | Interventional | Peer support | Social Support and Eating Habits―SSEH and Social Support and Exercise―SSE (Sallis, Grossman, Pinski, Patterson and Nader, 1987). |
| 26 | Kulik et al., 2015 [38] | N = 41 13 - 17 Girls | Interventional | Peer support | SSEH and SSE (Sallis, Grossman, Pinski, Patterson, and Nader, 1987). |