Method: one hundred fifty (N=150) male junior free style wrestlers were participated as subjects and they were further divided into five groups according to their weight categories, each group was comprised of thirty wrestlers. BMI can be categorized according to the WHO. Body fat percentage was estimated by using Durnin and Womersley equation and Body weight was measured with weighing machine. Cardiovascular endurance was assessed by Havard Step test of junior free style wrestlers.

Results: A statistical significant positive correlation was found between weight and BMI, skinfold thickness and %BF. Fitness index was observed negatively significant relationship with weight, percent body fat and BMI.

Conclusion: it is concluded that the free style wrestling is a weight classified sports and the fitness level of wrestler is most useful in this sports therefore the correlation of fitness index of the wrestlers with body composition is important. The results of the present study also demonstrated the effect of age, height, weight, BMI, and percentage body fat on the aerobic fitness of junior free style wrestlers.