## 3 Results  
The results of descriptive statistics showed the central tendencies and standard deviations of the studied variables, which are visible in the attached Table 1. Using the Kolmogorov-Smirnov test, it was determined that all variables are normally distributed.  
Table 2 shows the ANOVA results for biochemical parameters. A nonsignificant decrease in cortisol levels is seen on Figure 1, which was reported after the warm-up protocol, followed by a significant increase (\(p\) = 0.001, \(\mathrm{np}^{2}\) = 0.58) after the 6 km rowing race.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Variable** & **Mean** & **SD** & **Min** & **Max** & **Median** & **K-S (\(p\))** \\ \hline BH (cm) & 185.10 & 3.07 & 182 & 196 & 185 & \(p\) > 0.200 \\ BM (kg) & 85.65 & 9.10 & 71.4 & 103.7 & 84.5 & \(p\) > 0.200 \\ BF\% & 17.47 & 3.92 & 8.8 & 22.9 & 17.2 & \(p\) > 0.200 \\ MM (kg) & 39.33 & 2.24 & 36.7 & 43 & 39.3 & \(p\) > 0.200 \\ MM\% & 46.16 & 2.77 & 41.5 & 51.6 & 46 & \(p\) > 0.200 \\ 6 km (s) & 1302.94 & 44.60 & 1210.3 & 1354.3 & 1317.1 & \(p\) > 0.200 \\ LA 1 (mmol/L) & 1.48 & 0.29 & 1 & 2 & 1.5 & \(p\) > 0.200 \\ LA 2 (mmol/L) & 2.10 & 0.60 & 1.3 & 2.9 & 1.9 & \(p\) > 0.200 \\ LA 3 (mmol/L) & 11.81 & 2.38 & 7.5 & 14.9 & 12.1 & \(p\) > 0.200 \\ AA 1 (U/mL) & 271.89 & 206.29 & 26.8 & 566.4 & 183.6 & \(p\) > 0.200 \\ AA 2 (U/mL) & 233.54 & 136.42 & 35.3 & 433.8 & 168.9 & \(p\) > 0.200 \\ AA 3 (U/mL) & 581.99 & 395.28 & 86.2 & 1137.3 & 487.8 & \(p\) > 0.200 \\ COR 1 (ug/mL) & 0.68 & 0.25 & 0.3 & 1.1 & 0.7 & \(p\) > 0.200 \\ COR 2 (ug/mL) & 0.51 & 0.24 & 0.2 & 0.9 & 0.5 & \(p\) > 0.200 \\ COR 3 (ug/mL) & 0.94 & 0.41 & 0.4 & 1.7 & 0.8 & \(p\) > 0.200 \\ HR BAS (beats/min) & 115.00 & 12.81 & 98 & 136 & 114 & \(p\) > 0.200 \\ HR AVE (beats/min) & 186.42 & 9.05 & 170 & 203.2 & 188 & \(p\) > 0.200 \\ HR MAX (beats/min) & 201.33 & 6.76 & 192 & 213 & 200 & \(p\) > 0.200 \\ \hline \hline \end{tabular} Legend: SD—standard deviation; Min—minimum; Max—maximum; K-S (\(p\))—p=value of K-S normality test; BH = body length; BM = body mass; BF\% = body fat percentage; MM = muscle mass; MM\% = muscle mass percentage; 6 km = 6 km test result; LA 1 = initial lactate sample; LA 2 = second lactate sample; LA 3 = third lactate sample; AA 1 = initial alpha-amylase sample; AA 2 = second alpha-amylase sample; AA 3 = third alpha-amylase sample; COR 1 = initial cortisol sample; COR 2 = second cortisol sample; COR 3 = third cortisol sample; HR BAS = initial heart rate; HR AVE = average heart rate; HR MAX = maximum heart rate.  
\end{table}
Table 1: Descriptive statistics.  
Figure 1: Cortisol differences. Legend: *—statistically significant difference.  
Alpha-amylase values, as presented in Figure 2, experienced a nonsignificant decrease after the warm-up protocol, followed by a significant increase (\(p=0.001\), \(\eta\)p\({}^{2}=0.55\)) after the 6 km rowing race.  
The levels of measured blood lactate (Figure 3) showed a nonsignificant increase after the warm-up protocol, followed by a significant increase (\(p=0.001\), \(\eta\)p\({}^{2}=0.96\)) after the 6 km rowing race.  
\begin{table}
\begin{tabular}{c c c c} \hline  & **F** & **\(p\)** & **(\(\eta\)p\({}^{2}\))** \\ \hline AA & 10.92 & 0.001 & 0.55 \\ COR & 12.58 & 0.001 & 0.58 \\ LA & 195.25 & 0.001 & 0.96 \\ \hline \end{tabular} Legend: AA—alpha-amylase; COR– cortisol; LA—lactates; F—f value; \(p\)—p’-value; \(\eta\)p\({}^{2}\)—effect size value.  
\end{table}
Table 2: ANOVA for repeated measures.  
Figure 3: Lactate differences. Legend: *—statistically significant difference.  
Figure 2: Alpha-amylase differences. Legend: *—statistically significant difference.