## 3 Results  
In Figure 3, we present the averaged values of HR, RMSSD, BF, and RCA calculated from the 3 min segments collected during all three phases of the experiment: relaxation, bicycle ergometry exercise, and post-exercise recovery. In the following four tables (Tables 3-6), statistical significance for the comparisons between all calculated values for each variable is given. In these tables, we omit comparisons between the values obtained during relaxation, because there were no statistically significant differences, except for HR between Rel1 and Rel2 (\(p=0.047\)). \begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline \hline  & \multicolumn{10}{c}{HR} \\ \hline  & **Exe1** & **Exe2** & **Exe3** & **Exe4** & **Exe5** & **Exe6** & **Rec1** & **Rec2** & **Rec3** & **Rec4** & **Rec5** \\ \hline Rel1 & **0.005** & **0.005** & **0.005** & **0.005** & **0.005** & **0.008** & **0.005** & **0.005** & **0.005** & **0.005** & **0.005** \\ Rel2 & **0.005** & **0.005** & **0.005** & **0.005** & **0.005** & **0.008** & **0.005** & **0.005** & **0.005** & **0.005** & **0.005** \\ Rel3 & **0.005** & **0.005** & **0.005** & **0.005** & **0.005** & **0.008** & **0.005** & **0.005** & **0.005** & **0.005** & **0.005** \\ Rel4 & **0.005** & **0.005** & **0.005** & **0.005** & **0.005** & **0.008** & **0.005** & **0.005** & **0.005** & **0.005** & **0.005** \\ Rel5 & **0.008** & **0.008** & **0.008** & **0.008** & **0.012** & **0.008** & **0.008** & **0.008** & **0.008** & **0.008** & **0.008** \\ \hline \hline \multicolumn{10}{c}{} \\ \hline \mulAs expected, during submaximal HR exercise, HR increased and parasympathetic cardiac control was subsequently reduced. Besides increased BF, we also quantified a statistically significant increase in RCA (Figure 3, Tables 5 and 6). During recovery, HR and RCA uniformly significantly decreased, while changes in BF were almost not statistically significant. Parasympathetic activity during post-exercise recovery had a biphasic response. In the first 3 min segment, we obtained a high value of RMSSD which was not statistically different from the values obtained during relaxation (Table 4). In the second three-minute segment, we saw a drop in RMSSD, which was followed by raised values until the end of recovery. \begin{table}
\begin{tabular}{l c c c c c c c c c c} \hline \hline  & \multicolumn{10}{c}{**RMSSD**} \\ \hline  & **Exe1** & **Exe2** & **Exe3** & **Exe4** & **Exe5** & **Exe6** & **Rec1** & **Rec2** & **Rec3** & **Rec4** & **Rec5** \\ \hline Rel1 & **0.009** & **0.008** & **0.008** & **0.008** & **0.005** & **0.008** & 0.878 & **0.005** & **0.005** & **0.005** & **0.014** \\ Rel2 & **0.022** & **0.008** & **0.008** & **0.008** & **0.005** & **0.008** & 0.799 & **0.005** & **0.005** & **0.005** & **0.037** \\ Rel3 & **0.037** & **0.008** & **0.008** & **0.008** & **0.005** & **0.008** & 0.878 & **0.005** & **0.005** & **0.005** & **0.009** \\ Rel4 & **0.013** & **0.008** & **0.008** & **0.008** & **0.005** & **0.008** & 0.386 & **0.005** & **0.005** & **0.005** & **0.017** \\ Rel5 & **0.038** & **0.012** & **0.012** & **0.012** & **0.008** & **0.012** & 0.260 & **0.008** & **0.008** & **0.008** & **0.008** \\ \hline Exe1 & & **0.011** & **0.008** & **0.008** & **0.005** & **0.008** & **0.047** & **0.028** & **0.047** & 0.074 & 0.878 \\ Exe2 & & & **0.011** & **0.008** & **0.008** & **0.017** & **0.011** & 0.374 & 0.314 & 0.110 & 0.051 \\ Exe3 & & & & 0.515 & 0.086 & 0.161 & **0.008** & 0.038 & **0.011** & **0.011** & **0.008** \\ Exe4 & & & & 0.110 & 0.674 & **0.008** & 0.038 & **0.011** & **0.011** & **0.008** \\ Exe5 & & & & & 0.859 & **0.005** & 0.028 & **0.009** & **0.005** & **0.005** \\ Exe6 & & & & & & **0.008** & 0.038 & **0.015** & **0.008** & **0.008** \\ \hline Rec1 & & & & & & & **0.017** & **0.028** & **0.037** & 0.241 \\ Rec2 & & & & & & & & 0.386 & **0.037** & **0.007** \\ Rec3 & & & & & & & & & **0.007** & **0.005** \\ Rec4 & & & & & & & & & & & 0.059 \\ \hline \hline \end{tabular}
\end{table}