## 3 Results

Table 6: _Cont._According to Table 7, for the E1 group (7-8 years), chronological age correlates with the results of all motor tests, where \(p<0.05\), but sports experience does not influence the ability to maintain apnea. Analyzing the Pearson values for the age groups 9-10, 11-12 and 13-14 included in the study, we found that age does not influence the level of apnea maintenance specific to synchronized swimming. In contrast, sports experience correlates positively with the apneic capacity; the influence of sports experience on apneic capacity was statistically significant for all the tests of the study, \(p<0.05\). These results reflect the fact that in the initial stage, age has a major influence, but later through the continuation of training and the accumulation of sports experience, it acquires an essential role in relation to the apneic capacity. \begin{table}
\begin{tabular}{l l l l l l l l} \hline \hline \multirow{2}{*}{**Dependent Variable**} & \multirow{2}{*}{**Groups**} & \multirow{2}{*}{\begin{tabular}{c} **Group of** \\ **Comparison** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **\(\Delta\)X between** \\ **Groups** \\ \end{tabular} } & \multirow{2}{*}{**SE**} & \multirow{2}{*}{\(p\)} & \multicolumn{2}{c}{**95\%**} & \multicolumn{2}{c}{**95\%**} \\  & & & & & & & **CI—Lower** & **CI—Upper** \\ \hline \multirow{8}{*}{\
\begin{tabular}{l} Front layout with \\ support scull—TI \\ \end{tabular} } & E1 & E2 & \(-\)1.139 & 0.882 & 0.571 & \(-\)3.449 & 1.170 \\ \cline{2-9}  & & E3 & \(-\)4.857 * & 0.871 & \(<\)0.001 & \(-\)7.138 & \(-\)2.576 \\ \cline{2-9}  & & E4 & \(-\)20.021 * & 0.860 & \(<\)0.001 & \(-\)22.275 & \(-\)17.767 \\ \cline{2-9}  & E2 & E3 & \(-\)3.717 * & 0.917 & 0.001 & \(-\)6.120 & \(-\)1.315 \\ \cline{2-9}  & & E4 & \(-\)18.882 * & 0.907 & \(<\)0.001 & \(-\)21.259 & \(-\)16.505 \\ \cline{2-9}  & E3 & E4 & \(-\)15.164 * & 0.896 & \(<\)0.001 & \(-\)17.512 & \(-\)12.816 \\ \hline \multirow{8}{*}{
\begin{tabular}{l} Front layout with \\ support scull—TF \\ \end{tabular} } & E1 & E2 & \(-\)1.074 & 0.859 & 0.597 & \(-\)3.325 & 1.176 \\ \cline{2-9}  & & E3 & \(-\)4.727 * & 0.848 & \(<\)0.001 & \(-\)6.949 & \(-\)2.505 \\ \cline{2-9}  & & E4 & \(-\)19.949 * & 0.838 & \(<\)0.001 & \(-\)22.145 & \(-\)17.753 \\ \cline{2-9}  & E2 & E3 & \(-\)3.652 * & 0.893 & 0.001 & \(-\)5.993 & \(-\)1.312 \\ \cline{2-9}  & & E4 & \(-\)18.875 * & 0.884 & \(<\)0.001 & \(-\)21.190 & \(-\)16.559 \\ \cline{2-9}  & E3 & E4 & \(-\)15.222 * & 0.873 & \(<\)0.001 & \(-\)17.509 & \(-\)12.934 \\ \hline \hline \end{tabular}  
* E1—group 7–8 years, E2—group 9–10 years, E3—group 11–12 years, E4—group 13–14 years; TI—initial test; TF—final test; AX—the difference of the arithmetic means; SE—Standard error; 95% CI—interval of confidence; \(p\)—statistical significance values;
* Correlation is significant at the 0.05 level (2-tailed).  
\end{table} 
Table 6: _Cont._  
The multivariate analyses presented in Table 8 for age show that the Wilks' Lambda values were between 0.001 and 0.071, with \(p<0.05\), showing that the results of the implementation of the experimental training program were statistically significant for all groups (E1, E2, E3, E4). If we analyze the sports experience in relation to the results of the test groups of the study, we find that the values of Wilks' Lambda were statistically significant for \(p<0.05\). Referring to the sports experience, the values of Wilks' Lambda were 0 for the E2 group 9-10 years, E3 group 11-12 years and E4 group 13-14 years, and the Wilks' Lambda value for the E1 group 7-8 years was 0.034. Regarding age, the values of Wilks' Lambda were 0.071 for the E1 group 7-8 years, 0.001 for the E2 group 9-10 years, 0.008 for the E3 group 11-12 years and 0.021 for the E4 group 13-14 years. The low values of Wilks' Lambda show that the experimental program implemented in the study was effective, determining the optimization of apneic capacity in all four experimental groups.