“…Such a change is not limited to attitude, but also includes the transformations of behavior and performance, such as regular exercise, physical activity level, and sports participation (Beets, Vogel, Chapman, Pitetti, & Cardinal, 2007;Beets, Vogel, Forlaw, Pitetti, & Cardinal, 2006;Norman & Bente, 1992). To adolescent sports populations, peer participation, as well as obtainment of happiness, praise, and affirmation, are both important factors that stimulate sports participation (Young, Gittelsohn, Charleston, Felix-Aaron, & Appel, 2001;Cobb, 1976). In terms of the sources of social support, parents, teachers, and peers all will affect individuals' sports participation behaviors Nixon, 1984;Norman & Bente, 1992), and the influence of family and (Beets, Vogel,Forlaw, Pitetti, & Cardinal, 2006) professional sports coaches (Bucher and Krotee , 2000) is most important.…”