## 3 Results  
PRE and POST means and standard deviations of the RJs test performances have been reported in Table 2 in relation to sex. The linear repeated measures mixed model analysis showed a significant main effect for K\({}_{\text{MEAN}}\) regarding sex (F \({}_{\text{(3,18)}}\) = 7.65; \(p<0.0001\); 95% CI = 6.91-20.30, ES = 2.06, SE = 3.18, ICC = 0.84), indicating that males demonstrated superior values compared with their female counterparts. Following Bonferroni correction, significant differences in K\({}_{\text{MEAN}}\) were observed between sexes during both the PRE intervention (\(p<0.0001\); 95% CI = 7.36-19.85; ES = 1.97) and POST intervention (\(p<0.0001\); 95% CI = 8.65-21.14; ES = 2.04). Significant differences (\(p<0.0001\); 95% CI = 7.33-19.82; ES = 1.79) in the K\({}_{\text{MEAN}}\)were observed between males in the POST intervention and females in the PRE intervention. Likewise, significant differences (\(p<0.0001\); 95% CI\(=-21.17\)--\(8.68\); ES = 2.26) were identified in males in the PRE intervention and females in the POST intervention (Figure 2). Similarly, the linear repeated mixed model analysis revealed a significant main effect for K\({}_{\text{BEST}}\) with respect to sex (F \({}_{(3,18)}\) = 6.69; \(p<0.0001\); 95% CI = 9.57-26.60; ES = 1.91; SE = 4.05; ICC = 0.84). The results indicate that males demonstrated superior values compared with their female counterparts. After applying the Bonferroni correction, significant differences were observed between female and male K\({}_{\text{BEST}}\) values in both the PRE intervention (\(p<0.0001\); 95% CI = 10.14-26.03; ES = 2.06) and POST intervention (\(p<0.0001\); 95% CI = 7.73-23.62; ES = 1.68). Significant differences (\(p<0.0001\); 95% CI = 8.45-24.34) in K\({}_{\text{BEST}}\) were evident between males in the POST intervention and females in the PRE intervention (ES = 1.72). Moreover, significant differences (\(p<0.0001\); 95% CI\(=-25.31\)--\(9.42\)) emerged between males in the PRE intervention and females in the POST intervention (ES = 2.03) (Figure 3). \begin{table}
\begin{tabular}{c c c c c} \hline  & \multicolumn{2}{c}{_PRE_} & \multicolumn{2}{c}{_POST_} \\ \hline  & **Females** & **Males** & **Females** & **Males** \\ \hline \(K_{\text{MEAN}}\) (\(kN/m\)) & 25.1 \(\pm\) 3.8 * & 38.7 \(\pm\) 9.4 & 23.8 \(\pm\) 2.7 * & 38.7 \(\pm\) 10.4 \\ \(K_{\text{BEST}}\) (\(kN/m\)) & 30.9 \(\pm\) 4.8 * & 49.0 \(\pm\) 11.9 & 31.6 \(\pm\) 4.1 * & 47.3 \(\pm\) 13.1 \\ \(R_{\text{P}}\) (\(W/kg\)) & 23.6 \(\pm\) 5.5 & 23.1 \(\pm\) 6.5 & 21.9 \(\pm\) 5.3 \# & 21.2 \(\pm\) 6.1 \# \\ \hline \end{tabular} Abbreviations: K\({}_{\text{MEAN}}\) = Mean leg stiffness of five repetitive jumps over three trials; R\({}_{\text{P}}\) = mean reactive power of five repetitive jumps over three trials; K\({}_{\text{BEST}}\) = mean leg stiffness of the best jump (one per trial) of five repetitive jumps over three trials. * Significantly (\(p<0.0001\)) different from males; # significantly (\(p<0.002\)) different from PRE.  
\end{table} 
Table 2: Mean and standard deviations of leg stiffness (K\({}_{\text{MEAN}}\); K\({}_{\text{BEST}}\)) and reactive power (R\({}_{\text{P}}\)) before (PRE) and after (POST) the 30-min Superjump® mini trampoline training session in female and male participants. Figure 2: Distribution of leg stiffness (K\({}_{\text{MEAN}}\)) before (PRE) and after (POST) Superjump® interventions among male and female subjects. In addition, the analysis revealed a significant main effect for testing time (F (3,18) = 6.58; \(p\) < 0.006; 95% CI = \(-\)2.8--0.55; ES = 0.30; SE = 0.53; ICC = 0.95), indicating a noticeable effect on R\({}_{\rm P}\) values irrespective of sex. After Bonferroni correction, significant differences were found for both male (\(p\) < 0.002; 95% CI = \(-\)3.03--0.69; ES = 0.29) and female (\(p\) < 0.002; 95% CI = \(-\)2.74--0.63; ES = 0.31) R\({}_{\rm P}\) values in the PRE and POST interventions, respectively (Figure 4).