## 3 Results
### Lower Limb Explosive Power  
As demonstrated in Table 3, six weeks of training induced significant improvements (\(p<0.05\)) in all the explosive power metrics for both the groups. Except for SJS, the effects of all the other indicators were large. The PBRT group showed 9.4% improvement in BQ-1 RM, with 2.5%, 4%, 3.1%, and 6% gains in CMJ, SJ, SLJ, and SJS, respectively. Comparatively, the VBRT group exhibited the following superior enhancements: 22% in BQ-1 RM, accompanied by 9.3%, 8.7%, 7.7%, and 19.7% improvements in CMJ, SJ, SLJ, and SJS.  
Figure 6 reveals the statistically significant between-group differences in post-intervention gains (\(p=0.041\) for BQ-1 RM, 0.026 for CMJ, 0.032 for SJ, 0.035 for SLJ, and 0.033 for SJS) based on independent samples \(t\)-tests of the pre-post differences.  
The Cohen's d values for all the indicators exceeded 0.8 (range: 1.47-13.89), showing that VBRT had a large effect. The particularly high d values for BQ-1 RM and SLJ might reflect that VBRT optimized neuromuscular adaptations through velocity-based load adjustment.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline  & **VBRT (N = 10)** & **PBRT (N = 10)** & **\(p\)** \\ \hline Age (years) & 19.8 \(\pm\) 0.92 & 20.3 \(\pm\) 0.82 & 0.548 \\ Hight (cm) & 175.12 \(\pm\) 6.75 & 176.22 \(\pm\) 6.30 & 0.758 \\ Weight (kg) & 71.3 \(\pm\) 11.12 & 72.18 \(\pm\) 11.06 & 0.848 \\ Body fat percentage (\%) & 24.11 \(\pm\) 4.16 & 24.45 \(\pm\) 5.18 & 0.688 \\ Back squat 1 RM & 108.25 \(\pm\) 15.14 & 108.75 \(\pm\) 9.88 & 0.148 \\ Countermovement-Jump & 41.68 \(\pm\) 6.89 & 41.46 \(\pm\) 5.96 & 0.751 \\ Standing Long Jump & 39.04 \(\pm\) 6.46 & 38.89 \(\pm\) 5.34 & 0.622 \\ Standing Long Jump & 231.6 \(\pm\) 23.29 & 231.8 \(\pm\) 20.66 & 0.687 \\ Self-Weighted Squat Jump Speed & 3.01 \(\pm\) 0.20 & 3.01 \(\pm\) 0.22 & 0.869 \\ Left and Right Touch Line & 15.49 \(\pm\) 0.60 & 15.51 \(\pm\) 0.69 & 0.819 \\ Footnote 1: Fromt and Back Touch Net & 19.78 \(\pm\) 0.98 & 19.84 \(\pm\) 1.02 & 0.947 \\ Footnote 2: Fromt and Back Touch Net & 18.31 \(\pm\) 0.88 & 18.97 \(\pm\) 0.50 & 0.154 \\ \hline \hline \end{tabular} All data are presented as means \(\pm\) SD.  
\end{table}
Table 2: Physical characteristics of participants (M \(\pm\) SD).  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multicolumn{2}{c}{**Variables**} & **BQ-1 RM(KG)** & **CMJ(CM)** & **SJ(CM)** & **SLJ(CM)** & **SJS(M/S)** \\ \hline \multirow{4}{*}{PRBT (\(n=10\))} & Pre & 108.7 \(\pm\) 9.88 & 41.46 \(\pm\) 5.96 & 38.89 \(\pm\) 5.34 & 231.8 \(\pm\) 20.66 & 3.01 \(\pm\) 0.2 \\  & Post & 118.9 \(\pm\) 16.89 & 42.51 \(\pm\) 6.73 & 40.46 \(\pm\) 6.19 & 239 \(\pm\) 26.30 & 3.19 \(\pm\) 0.34 \\  & \(p\) & 0.007 * & 0.05 * & 0.017 * & 0.048 * & 0.016 * \\  & T & 3.47 & 2.27 & 2.92 & 2.29 & 2.98 \\  & Cohen’s D & 9.26 & 1.47 & 1.70 & 9.93 & 0.39 \\ \hline \multirow{4}{*}{VBRT (\(n=10\))} & Pre & 108.25 \(\pm\) 15.14 & 41.68 \(\pm\) 6.89 & 39.04 \(\pm\) 6.46 & 231.6 \(\pm\) 23.29 & 3.01 \(\pm\) 0.22 \\  & Post & 132 \(\pm\) 27.93 & 45.58 \(\pm\) 9.28 & 42.78 \(\pm\) 9.32 & 249.4 \(\pm\) 34.33 & 3.6 \(\pm\) 0.5 \\  & \(p\) & 0.001 * & 0.002 * & 0.008 * & 0.003 * & 0.001 * \\  & T & 5.340 & 4.352 & 3.471 & 4.284 & 5.917 \\  & Cohen’s D & 13.89 & 2.83 & 3.45 & 13.3 & 0.32 \\ \hline \end{tabular}
\end{table}
Table 3: Intra-group change in lower limb explosive power over 6 weeks for PBRT and VBRT groups.