Plyometric is the type of jump training planned to enhance muscular power and explosiveness, resulting in improved athletic performance. Body Mass Index, or BMI, is the method of determining body fat derived from the height and weight of adult individuals.

Objective: The objective of the current research was to recognize the effect of plyometric training on BMI among state-level throwers.

Methods: Twenty state-represented throwers (Age-15±2.37years, Height-160±6.9cm, Weight-50±7.4 Kg) from the Barasat Athletic Club, North 24 Parganas, and West Bengal, India were purposefully chosen as the study's subjects. The total of twenty subjects were distributed to one experimental group and one control group, each with 10 subjects. Pretest scores on BMI were obtained for both groups. The experimental group was then given a 12-week plyometric training (hurdles hops, squat jumps, box jumps, and depth jumps), just when the control group received only their regular everyday activities of their training schedule. All twenty individuals (the experimental and control group) underwent a body mass index test following the experimental treatment. These results of the test served as the post-test score on BMI for both groups. The t-test was employed for statistical analysis of the pre-test and post-test results. 0.05 level of significance was set for judging significance.

Result and Discussion: Mean ±SD values of the body mass index of the pretest and post-test of the experimental group are 24.45±2.41kg/m2 & 23.13±2.48 kg/mand for the control group 21.12±3.30 kg/m² & 21.04±3.32 kg/m² respectively. For the experimental group Cal. t value is 2.61 whereas the control group it is 0.74. At the 0.05 level of significance, a value of 2.14 is required to be significant at 9df. Based on the outcome, for the experimental group, the ‘t’ value is 2.61, that is greater than the Tab. value of 2.14, while the control group's "t" value is 0.74, which is lower than the table value of 2.14. The statistical analysis indicates a significant difference between pretest and post-test scores on body mass index for the experimental group, who participated in the plyometric training, whereas there is no significant change in the body mass index for the control group between pre-test and post-test results.

Conclusion: Twelve weeks of plyometric training considerably improve (reduce score) the BMI of the state-level thrower.