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Background and Aim: Polycystic Ovary Syndrome (PCOS) is one of the most common endocrine abnormalities that insulin resistance and obesity are among its main causes. The purpose of this study was to investigate the effect of chronic aerobic and resistive exercises along with supplementation of cinnamon on insulin resistance in women with polycystic ovary syndrome in Ahwaz in 2017. Materials and Methods: In this semi-experimental study, 40 women with aged 18 to 30 years (BMI ≤24) were randomly divided into 4 groups. The intervention group performed 6 weeks, 3 sessions per week with intensity 50 to 75% of maximum heart rate for 50 to 85 minutes of exercise aerobic-resistance. Serum levels of insulin, glucose, and body composition indexes were evaluated. The t-test was correlated and ANCOVA was used. Ethical Considerations: This study with research ethics code EE/ 96.24.3.77886/Scu.ac.ir has been approved by research ethics committee at Shahid Chamran University of Ahvaz, Iran. Findings: Data analysis showed that body mass index, fat percentage and insulin resistance were decreased in exercise and supplementation exercises (p≤0.05). Cinnamon was also effective in combination with combined exercises in body composition and insulin resistance index (p≤0.05). Changes in fat free mass were not significant in any of the groups (p≤0.05). Conclusion: It seems that this decrease in the difference in insulin resistance is more due to the combined exercise, and given the positive effect of cinnamon on reducing BMI, its use may be effective in the long term on insulin resistance.