Abstract:
The purpose of this Quasi-experimental research design was to study an effect of self-efficacy program and exercise program for health-related fitness in overweight adolescent. The subjects were fifty-five male and female overweight students from Santiratwitthayalai School and Sriayudhya School, aged between 14-15 years. They were divided into 2 groups: the experimental group and the control group by using purposive sampling method. The experiment group from Santiratwitthayalai School participated in self-efficacy program together with exercise program while the control group from Sriayudhya School participated in exercise program only. The training program was 10 weeks and 3 days per week. Both groups were pretested and posttested for self-efficacy program in exercise and health-related fitness included body mass index, sit and reach test, abdominal curls, pushups and walk/run 1.6 km. The results were analyzed by using paired t-test and independent t-test within group and between groups respectively. The significant level was set at .05 level. The results were as follow : 1. After 10 weeks, there were significant higher average score of self-efficacy program in exercise and health related-fitness (sit and reach test, abdominal curls, pushups and walk/run 1.6 km) in the experimental group and the control group at the .05 level. 2. After 10 weeks, there were no significant differences of average score of self-efficacy program in exercise and health related-fitness (body mass index, sit and reach test, abdominal curls, pushups and walk/run 1.6 km) between the experimental group and the control group at the .05 level. It was concluded that self-efficacy program together with exercise program was not significantly different from exercise program only in promoting self-efficacy program in exercise.