---

Abstract
The purpose of this study was to examine the relationship between motor competence, cardiovascular fitness test and physical activity of adolescents with the role of mediation of perceived competence.  The research sample consisted of 386 adolescent boys. Perceived competence was measured using Physical Ability scale of the short form of the Marshall Self-Descriptive Questionnaire (2010). From the pedometer And physical activity questionnaire for older children was used to measure physical activity,  and using Bruininks-Oseretsky Test test for measuring motor competence and a 1600-meter test for cardiovascular fitness test. The results showed a significant correlation between motor competence, perceived competence, cardiovascular fitness test and physical activity. Perceived competence  mediates association between motor competence and physical activity, fitness and cardiovascular fitness test. Finally, the results of the model showed that perceived competence had the most impact on the participation of adolescent physical activity. Also, motor competence has a greater effect on cardiovascular fitness test than perceived competence. According to the results of the research, educational programs should be designed and designed according to the importance of motor competence and perceived competence to improve participation of physical activity and physical fitness of adolescents.