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the purpose of this study was the comparison effect implementation methods physical activity outside of class on the physical fitness of 15 y. boy students. method of study was quasi experimental and statitical population of that includes all of the 15 y. boy students of  maraghe city(n=2865). sample of study was 80 pepole who were selected of sample available and then randomly in four groups of 20 people called as experimental group 1, the method on based students self-supervision, experimental group 2, the method on based parentals supervision, experimental group 3, the method on based physical education teachers supervision and controll group that were homogenous. at first a pretest was done from the four groups by pull up test, sit and rich test, sit up test, 540 meter running test. implementation methods physical activity outside of class were done on groups for 8 weeks and then a post test was done from four groups. for statistical analysis of multivariate analysis of variance was used for comparison mean between groups.The results showed that the method of enforcement activity outside of class fitness factors of boy students, there are significant differences ( p≤0/05).however, The results showed that the method on based physical education teachers supervision had a  more impact on physical  fitness  related to health.