## 3 Results
### Independent Samples T test
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multicolumn{2}{c}{**Agility Test**} & \multicolumn{1}{c}{**Group**} & \multicolumn{1}{c}{**Tests**} & \multicolumn{1}{c}{**Mean**} & \multicolumn{1}{c}{**SD**} & \multicolumn{1}{c}{**SEM**} & \multicolumn{1}{c}{**Power**} & \multicolumn{1}{c}{**\(t\)**} & \multicolumn{1}{c}{**\(p\)**} & \multicolumn{1}{c}{**d**} \\ \hline \multirow{3}{*}{T agility test} & Experimental & Ft–It & 1.33 & 0.68 & 0.17 & 0.97 & 1.68 & 8.01 & 0.00 & 1.21 \\ \cline{2-11}  & Control & Ft–It & 0.07 & 0.12 & 0.03 & 0.00 & 0.13 & 2.26 & 0.04 & 0.19 \\ \hline \multirow{3}{*}{T agility test with ball} & Experimental & Ft–It & 1.74 & 0.87 & 0.21 & 1.30 & 2.19 & 8.29 & 0.00 & 1.28 \\ \cline{2-11}  & Control & Ft–It & 0.04 & 0.08 & 0.02 & 0.00 & 0.09 & 2.20 & 0.04 & 0.11 \\ \hline \multirow{3}{*}{T reactive agility test} & Experimental & Ft–It & 1.77 & 1.22 & 0.29 & 1.14 & 2.39 & 5.99 & 0.00 & 0.98 \\ \cline{2-11}  & Control & Ft–It & 0.10 & 0.22 & 0.05 & \(-0.01\) & 0.22 & 2.00 & 0.05 & 0.17 \\ \hline \multirow{3}{*}{T reactive agility test with ball} & Experimental & Ft–It & 2.98 & 2.47 & 0.60 & 1.71 & 4.25 & 4.97 & 0.00 & 1.13 \\ \cline{2-11}  & Control & Ft–It & 0.10 & 0.19 & 0.05 & 0.01 & 0.20 & 2.24 & 0.04 & 0.14 \\ \hline \multirow{3}{*}{Illinois agility test} & Experimental & Ft–It & 1.21 & 0.96 & 0.23 & 0.72 & 1.70 & 5.22 & 0.00 & 1.18 \\ \cline{2-11}  & Control & Ft–It & 0.10 & 0.19 & 0.05 & 0.00 & 0.20 & 2.07 & 0.05 & 0.10 \\ \hline \multirow{3}{*}{Illinois agility test with ball} & Experimental & Ft–It & 1.95 & 1.10 & 0.27 & 1.39 & 2.51 & 7.33 & 0.00 & 1.54 \\ \cline{2-11}  & Control & Ft–It & 0.10 & 0.14 & 0.03 & 0.03 & 0.18 & 3.04 & 0.01 & 0.11 \\ \hline \hline \end{tabular}  
* It—initial test; Ft—final test; \(t\)—Student T value; SD—standard deviation; SEM—standard error mean; CI–confidence interval of the difference; \(p\)—statistically significant value; d—effect size.  
\end{table} 
Table 4: Statistical analysis of agility tests for the U14 experiment and control groups between the (It) and (Ft). Table 6, the interpretation, considering the initial better preparation of the control group and the subsequent catch-up by the experimental group, reveals significant insights. Initially, in the T agility test, the experimental group was significantly outperformed by the control group, as indicated by a mean difference of 1.43 s and a significant t-value of 4.22. However, by the final phase, this gap narrowed considerably, with a non-significant mean difference of only 0.17 s, suggesting that the experimental group caught up effectively. A similar trend is observed in the T agility test with a ball. Initially, the control group led by a significant 1.99 s, but this difference was reduced to a non-significant 0.33 s in the final phase, again illustrating the substantial improvements made by the experimental group. In the T reactive agility test and its ball variant, the initial performance gaps were 2.01 and 3.56 s, respectively, favoring the control group. By the final phase, these differences decreased to 0.31 and 0.69 s. Although these final phase differences were still significant, the reduced gaps indicate considerable progress by the experimental group. The Illinois agility test results reinforce this pattern. The initial phase showed the control group leading by 3.44 and 3.98 s in the standard and ball variants, respectively. By the final phase, these differences reduced to 2.33 and 2.14 s. Although the experimental group did not completely close the gap, the significantly reduced differences in the final phase demonstrate their marked improvement. Overall, these results highlight two key points: the control group's initial superior performance, likely due to their better preparation, and the experimental group's notable catch-up by the final testing. The experimental group's significant improvements across all agility tests suggest the effectiveness of their training program in enhancing agility skills to a level comparable with a initially more prepared control group.