## 3 Results  
Descriptive statistics and differences between quality categories are presented in Table 1.  
According to the results of the independent sample \(t\)-test, wrestlers differed in terms of the SWFT performance variables and cardiac and metabolic indices during the second testing trial (i.e., SWFT2 total throws, SWFT2 INDEX HR, and SWFT2 INDEX LA), while such differences were not observed in the first testing trial. These differences were additionally confirmed with ROC (area under the curve values), with SWFT2 total throws, SWFT2 INDEX HR, and SWFT2 INDEX LA reaching values greater than 0.70 (Table 1). Figure 2 presents the ROC and AUC of the SWFT variables. It is evident that the SWFT total number of throws during the second testing trial had the greatest sensitivity for categorizing wrestlers as successful. Moreover, the ROC identified the cut points for the observed variables with an area under the curve (AUC) greater than 0.70. Specifically, the cut point value of 24.50 for SWFT2 total throws and, value of 261.26 for SWFT2 INDEX LA were identified, meaning that wrestlers who reach scores higher than those cut points are more likely to be categorized into a better performance quality group. Moreover, wrestlers who reach a value lower than 15.16 for SWFT2 INDEX HR are more likely to be categorized into better performance quality. Furthermore, to gain a detailed insight at which point of the testing procedure and in which parameters appear the most significant differences between performance categories, \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & \multicolumn{2}{c}{**Successful (n = 13)**} & \multicolumn{2}{c}{**Less Successful (n = 16)**} & \multicolumn{2}{c}{\(t\)**-Test**} & \multicolumn{2}{c}{**ROC**} \\ \hline
**Variables** & **Mean** & **SD** & **Mean** & **SD** & **\(t\)-Value** & **\(p\)** & **AUC** & **95\% CI** \\ \hline SWFT1 TT & 26.08 & 3.99 & 23.87 & 2.42 & 1.79 & 0.09 & 0.63 & 0.38–0.89 \\ SWFT1 INDEX HR & 13.49 & 2.29 & 14.55 & 1.58 & \(-\)1.42 & 0.17 & 0.64 & 0.42–0.86 \\ SWFT1 INDEX LA & 326.52 & 60.46 & 293.59 & 45.92 & 1.45 & 0.16 & 0.68 & 0.44–0.93 \\ SWFT2 TT & 24.5 & 2.43 & 21.6 & 2.47 & 3.05 & 0.01 & 0.82 & 0.63–1.00 \\ SWFT2 INDEX HR & 14.39 & 1.68 & 16.29 & 2.5 & \(-\)2.25 & 0.03 & 0.73 & 0.53–0.92 \\ SWFT2 INDEX LA & 287.92 & 36.18 & 254.3 & 36.22 & 2.17 & 0.04 & 0.75 & 0.54–0.96 \\ \hline \hline \end{tabular} Note: SWFT—Specific wrestling fitness test, TT—total throws, SWFT1—the first trial of the Specific wrestling fitness test, SWFT2—The second trial of the Specific wrestling fitness test, INDEX 1—index calculated regarding heart rate and the total number of throws, INDEX 2—index calculated regarding heart rate, lactate concentration and total number of throws, HR—Heart rate, LA—blood lactate concentration, ROC—Receiver operating characteristics, AUC—Area under the curve, and CI—confidence interval.  
\end{table} 
Table 1: Descriptive statistics and differences between quality categories. Figure 2: Receiver operating characteristics (ROC) curves for SWFT variables for differentiating quality categories. Note: SWFT1—The first trial of the specific wrestling fitness test, SWFT2—The second trial of the Specific wrestling fitness test, TT—total number of throws, LA—blood lactate, HR—heart rate, INDEX HR—index calculated regarding heart rate and a total number of throws, and INDEX LA—index calculated regarding heart rate, lactate concentration and a total number of throws. The dashed line represents reference line (AUC = 0.5). Figure 3 is presented. Figure 3 shows a graphical representation of the two-way ANOVA results for the SWFT parameters. As shown in Figure 3A, the most visible changes between quality categories occurred at the first throwing round during the second SWFT trial. Lactate concentrations (Figure 3B) and heart rate responses (Figure 3C) were similar among the quality categories across the testing procedure.