## 3 Results  
The statistical characteristics of the anthropometric measurements at the baseline as well as pre- and retest results, are presented in Table 1. Generally, results showed typical body dimensions for the volleyball players and normal weight-to-height proportions presented by BMI values (however close to the upper border of the range). The internal variation of all the results was low, which was confirmed by standard deviations. Relatively (standard deviation in relation to the mean), the least homogenous was age (v = 13.51%) and weight (v = 12.43%), which is typical for the assessed kind of group. It must be highlighted that low variation within the group in DRAT results, as well as total time results are three components. All variable coefficients were lower than 10%. However, there were differences in deviations between the test and retest, which were studied in-depth in the next part of the paragraph. Table 2 presents the results of the validation process containing an evaluation of the agreement, reliability, accuracy, and validity of the total time and three components of the DRAT. Total results and left slide, right slide, and back slide components are presented. The statistical measurements of the test quality are \(t\)- and \(p\)-value derived from pairwise \(t\)-test, [PERSON]'s \(d\) effect size coefficient, mean difference and 95%CI from Bland-Altman analysis, repeatability coefficient (RC), intraclass correlation coefficient (ICC (3.1)), standard error of measurement (SEM), minimal difference (MD), and repeated measure correlation coefficient (\(\Phi\)). \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Test**} & \multicolumn{4}{c}{**Retest**} \\ \hline  & **Mean** & \multicolumn{2}{c}{**95\%CI**} & **SD** & **V** & **Mean** & **95\%CI** & **SD** & **v** \\ \hline Age [y] & 22.3 & 20.6 & 24.0 & 3.0 & 13.51 & & & & & \\ Body height [cm] & 188.9 & 184.6 & 193.2 & 7.4 & 3.92 & & & & & \\ Body weight [kg] & 85.4 & 79.3 & 91.6 & 10.6 & 12.43 & & & & & \\ BMI [kg/m\({}^{2}\)] & 23.9 & 22.7 & 25.1 & 2.0 & 8.57 & & & & & \\ Total time [s] & 4.19 & 4.05 & 4.34 & 0.25 & 6.04 & 4.20 & 4.07 & 4.33 & 0.22 & 5.27 \\ Left side slide [s] & 1.36 & 1.30 & 1.41 & 0.10 & 7.06 & 1.41 & 1.34 & 1.48 & 0.12 & 8.27 \\ Right side slide [s] & 1.41 & 1.34 & 1.48 & 0.13 & 8.96 & 1.40 & 1.35 & 1.44 & 0.08 & 6.00 \\ Back slide [s] & 1.43 & 1.37 & 1.48 & 0.10 & 6.81 & 1.39 & 1.35 & 1.44 & 0.08 & 5.55 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Statistical characteristics of the anthropometric and functional performance of the participants. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Test** & **t-Value** & \(p\)**-Value** & \begin{tabular}{c} **Cohen’s \(d\)** \\ **(95\%CI)** \\ \end{tabular} & \
\begin{tabular}{c} **mean\({}_{\text{diff}}\)** \\ **(95\%CI)** \\ \end{tabular} & **RC** &
\begin{tabular}{c} **ICC (3.1)** \\ **(95\%CI)** \\ \end{tabular} & **SEM** & **MD** & \(\Phi\) \\ \hline TT & \(-\)0.20 & 0.8413 & \(-\)0.58–0.47 & \(-\)0.21–0.20 & 0.20 & 0.91 * & & \\ LS & \(-\)2.52 & 0.0255 & \(-\)0.67 & \(-\)0.05 & 0.18 & 0.72 * & 0.14 & 0.39 & 0.72 * \\  & & \(-\)1.25—0.08 & \(-\)0.21–0.10 & & 0.33–090 & & & & \\ RS & 0.65 & 0.5273 & 0.17 & 0.02 & & 0.66 * & & & \\  & & \(-\)0.36–0.70 & \(-\)0.16–0.19 & & 0.21–0.87 & & & & \\ BS & 1.31 & 0.2122 & 0.35 & 0.03 & 0.18 & & 0.45 * & & \\  & & \(-\)0.20–0.88 & \(-\)0.15–0.21 & & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Validation results of the test-retest of the defensive reactive agility test (DRAT). The first step was to assess the agreement between the mean values of pre- and retest. Results presented in Table 1 showed no premise to reject hypothesis zero about equality between mean values of the measured variables (no significant differences) except the left side slide (\(p\) = 0.0255). The confirmation of the consistency between mean results in both tests is generally low effect sizes.