“…Two interventions were family-based and included parents and children (Berry et al, 2007;Rodearmel et al, 2007), one study assessed changes in physical activity among blind children at an activity camp (Lieberman et al, 2006) and another study examined physical activity behavior in a laboratory setting (Goldfield et al, 2000). Seven studies involved children, aged 8-11 years (Butcher et al, 2007;Goldfield et al, 2000;Goldfield et al, 2006;Horne et al, 2009;Lieberman et al, 2006;Oliver et al, 2006;Southard and Southard, 2006), five studies included adolescent participants, aged 14-17 years (Lubans and Morgan, 2008;Lubans et al, 2009;Schofield et al, 2005;Tsiros et al, 2008;Zizzi et al, 2006) and two studies included children and adolescents in family-based interventions (Berry et al, 2007;Rodearmel et al, 2007). The shortest study period was 20 min and the longest assessment period was 6 months (Berry et al, 2007;Lubans et al, 2009;Rodearmel et al, 2007).…”