## 4 Discussion
### Maximum Punching Velocity  
On the other hand, regarding the changes in PVmax (m\(\cdot\)s\({}^{-1}\)) values, the results of this study demonstrate significant increases in PVmax (m\(\cdot\)s\({}^{-1}\)) following glyometric training interventions. These increases were observed in the Plyometric Stair Jump (PSJ) and Plyometric Reaction Box Jump (PRJ) training groups, with differences in the magnitude of change between the two groups. When examining the effects of pyometric training on biomechanical speed, explosive power, and athletic performance, significant increases in PVmax values for both the right and left arms were observed in the PSJ group. These results indicate that the PSJ group showed more significant increases in PVmax for both arms, which can be attributed to the stair jump exercises' explosive, fast movements. Plyometric Stair Jump (PSJ) exercises are known for their high acceleration and rapid force development, and they promote extensive explosive power development through high-intensity glyometric actions. [PERSON] et al. (2018) [38] emphasized that pyometric exercises, mainly multi-directional jumps and sprints, significantly improve maximum power output by enhancing muscle coordination and developing muscle elasticity. In this context, the higher PVmax increase observed in the PSJ group supported the effectiveness of the training method in developing explosive power. In the PRJ group, however, the reaction box jump exercises focused mainly on developing reactive strength, and such training improved muscle elasticity and acceleration capacity, thus enhancing speed development. Nevertheless, the PRJ group showed smaller increases compared to the PSJ group. This could be due to the reaction box jump exercises' emphasis on shorter duration acceleration and force development. [PERSON] and [PERSON] (2015) [64] found that reactive exercises improve the stretch-shortening cycle (SSC) by facilitating rapid muscle contractions. However, their effects are more limited compared to movements that require high acceleration and vertical jumping, such as stair jumps. Looking at the biomechanical speed recovery and power development, the PSJ group exhibited higher PVmax values for both arms. These findings suggest that PSJ training efficiently developed arm strength and speed. The more significant increases observed in the PSJ group can be explained by the nature of the exercises, which focus on developing explosive power. Furthermore, PRJ training's primary focus on reaction time may have limited the extent of acceleration and force increases. Regarding the statistical significance of the motor control results and the reliability of the outcomes, the increase in PVmax values was statistically significant in both training groups. This indicates that the training interventions had a reliable and considerable effect on both groups. [PERSON] et al. (2014) [65] reported that pyometric training generally leads to reliable and significant improvements in performance factors such as strength, speed, and explosive power. The obtained \(p\)-values suggest that the findings were not random and reflected actual enhancements. These results highlight the impact of pyometric training on speed and explosive power development. PSJ training is more effective for speed and strength development, while PRJ training suits sports requiring reaction and acceleration. This suggests that both training types can be used to achieve specific performance goals. In the literature, pyometric training improves explosive power, speed, and strength development. Exercises like stair jumps help accelerate speed by targeting large muscle groups. These findings align with foundational studies in the literature, such as those of [PERSON] et al. (2013) [21], which show that pyometric training facilitates muscle operation at maximum speed and enhances body speed. PRJ training, on the other hand, is emphasized in the literature for its role in developing reactive strength and improving acceleration.