“…In the school setting, these changes include a new PA/Physical Education (PE) school environment [ 11 , 12 , 13 , 14 , 19 ]; a new range of school-based policies surrounding PA, PE, and the physical school setting that could affect the adolescents PA (i.e., availability of equipment) [ 15 , 17 , 18 , 19 , 20 ]; and differing expectations surrounding individual development and growth [ 21 , 22 , 23 , 24 ]. Changes in the household environment that have been identified to potentially modify PA during the transition are parental expectations for more responsibilities and independence [ 19 , 21 , 22 , 24 , 25 , 26 , 27 ]; and changes in the family’s role as a gate-keeper to adolescents PA [ 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. Noted changes experienced in the adolescents’ dynamic social environment include the desire to develop new friendships, increased peer influence on the adolescent’s lifestyle [ 13 , 16 , 23 , 25 , 27 , 33 , 34 , 35 ], and the need for social support [ 25 , 26 , 27 , 28 , 29 , 34 , 35 , 36 , 37 , …”