Purpose:The aim of the present study was to compare the effect of six weeks of core stability training on bosuball and balance board on balance, speed and range of motion of the ankle in adolescent boys.

Methods:In this quasi-experimental study, 30 adolescent boys were purposefully and accessibly selected as subjects and were randomly divided into three groups:10 in the balance board training group,10 in the bosuball training group, and10 in the control group.The training program consisted of six weeks of core stability training in two experimental groups, bosuball and balance board .24 hours before the pre-test and after the implementation of the training protocol, all subjects in the three groups of Y test were performed to assess balance, 36-meter running test to assess speed and measure ankle range of motion. K-S test was used to evaluate the normality of the data, Levin test was used to determine the homogeneity of variances, and one-way ANOVA analysis was used to analyze the data, and Bonferroni test was used to determine the mean pair difference.

Results:Based on the results and findings of the research on post-test scores, the exercises of the bosuball group and the balance board in the factors of balance, speed and range of motion of the ankle, showed a significant difference with the control group.

Conclusion:The results of this study showed that core stability training on bosuball and balance board improves balance, speed and range of motion factors of adolescent boys.