Back pain is one of the common musculoskeletal disorders, which is important to study in the adolescent age group. In general, non-specific chronic back pain is a multifactorial problem that is associated with different disorders. In fact, one-piece models of performance disorders show that many of these factors may be related to each other. Accordingly, this research was conducted with the aim of comparing endurance and strength of trunk muscles in male students with and without back pain in Mazandaran province. The present study was conducted as a semi-experimental study for 4 weeks. In this study, 144 male students participated in two groups: 72 people without back pain and 72 people with back pain complications. Trunk flexion and extension strength was evaluated by MMT and endurance was evaluated by 60 degree flexion and Sorensen tests, respectively. Data analysis was done with independent t-test. The results of the independent t analysis test showed that there is a significant difference between the two groups with and without back pain in the variables of trunk flexion endurance (p=0.005), trunk endurance ratio (p=0.004) and trunk extension strength (p=0.02). p) There is that according to the averages, it was found that subjects without back pain performed better in these variables than the group with back pain, but no significant difference was observed in other variables. Finally, the current research showed a significant difference between trunk flexion endurance, trunk endurance ratio and trunk extension strength in two groups with and without back pain. According to the results of the present research in the field of strength and endurance of the muscles of the central region, as well as strengthening the muscles of this region, it is suggested to prevent or reduce back pain.