Abstract This research paper aims to explore the effectiveness of a structured 12-week plyometric training program in enhancing explosive power and speed among sub-junior judokas—young athletes between the ages of 11 and 14. A total of eighty male judokas were selected and randomly divided into two groups to maintain the integrity of the experimental design: an experimental group that underwent specialized plyometric exercises in addition to regular judo practice, and a control group that followed only their standard judo training without any additional conditioning. The study focused on measuring key physical performance indicators—explosive power and speed—through standardized fitness tests. The Standing Broad Jump was used to evaluate lower-body power, the Medicine Ball Chest Throw for upper-body explosive strength, and a 50-meter sprint for assessing linear speed. Following the 12-week intervention, a comparative analysis using Analysis of Covariance (ANCOVA) revealed statistically significant improvements in both explosive power and speed within the experimental group compared to the control group. These findings strongly support the hypothesis that plyometric training has a positive impact on the development of neuromuscular performance characteristics critical to judo success. The research underscores the value of incorporating age-appropriate, sport-specific plyometric drills into youth athletic programs, particularly for sports like judo that demand rapid, explosive movements. Ultimately, the study provides empirical evidence that plyometric training is a practical and effective tool for enhancing physical performance in sub-junior judokas.