## 3 Results
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline California & & & & & & & & & & \\ \hline Day & 28-February & 1-March & 2-March & 3-March & 4-March & 5-March & 6-March & 7-March & 8-March & 9-March & 10-March \\ Correlation & \(-\)0.297 & \(-\)0.056 & \(-\)0.068 & 0.058 & \(-\)0.139 & 0.335 & 0.115 & \(-\)0.070 & \(-\)0.127 & 0.017 & 0.088 \\ \(p\) value & 0.000 *** & 0.342 & 0.251 & 0.329 & 0.019 * & 0.000 *** & 0.053 & 0.236 & 0.031 * & 0.771 & 0.139 \\ \hline Lithuania & & & & & & & & & & & \\ \hline Day & 28-February & 1-March & 2-March & 3-March & 4-March & 5-March & 6-March & 7-March & 8-March & 9-March & 10-March \\ Correlation & 0.001 & \(-\)0.214 & \(-\)0.051 & \(-\)0.004 & \(-\)0.096 & 0.320 & \(-\)0.074 & \(-\)0.201 & \(-\)0.146 & \(-\)0.101 & 0.047 \\ \(p\) value & 0.983 & 0.000 *** & 0.391 & 0.952 & 0.104 & 0.000 *** & 0.212 & 0.001 *** & 0.013 * & 0.088 & 0.430 \\ \hline New Zealand & & & & & & & & & & & \\ \hline Day & 28-February & 1-March & 2-March & 3-March & 4-March & 5-March & 6-March & 7-March & 8-March & 9-March & 10-March \\ Correlation & \(-\)0.094 & \(-\)0.056 & \(-\)0.092 & \(-\)0.056 & 0.128 & 0.366 & 0.075 & \(-\)0.041 & \(-\)0.073 & \(-\)0.071 & \(-\)0.056 \\ \(p\) value & 0.114 & 0.345 & 0.120 & 0.348 & 0.031 * & 0.000 *** & 0.205 & 0.495 & 0.220 & 0.232 & 0.344 \\ \hline Saudi Arabia & & & & & & & & & & & \\ \hline Day & 28-February & 1-March & 2-March & 3-March & 4-March & 5-March & 6-March & 7-March & 8-March & 9-March & 10-March \\ Correlation & \(-\)0.114 & \(-\)0.033 & 0.017 & \(-\)0.044 & 0.005 & 0.183 & \(-\)0.137 & \(-\)0.083 & 0.045 & 0.114 & \(-\)0.043 \\ \(p\) value & 0.054 & 0.574 & 0.769 & 0.455 & 0.928 & 0.002 ** & 0.020 * & 0.161 & 0.446 & 0.053 & 0.469 \\ \hline United Kingdom & & & & & & & & & & \\ \hline Day & 28-February & 1-March & 2-March & 3-March & 4-March & 5-March & 6-March & 7-March & 8-March & 9-March & 10-March \\ Correlation & 0.042 & \(-\)0.096 & \(-\)0.125 & 0.128 & 0.010 & 0.254 & 0.090 & \(-\)0.184 & \(-\)0.138 & 0.054 & 0.086 \\ \(p\) value & 0.481 & 0.106 & 0.034 * & 0.031 * & 0.870 & 0.000 *** & 0.130 & 0.002 ** & 0.019 * & 0.364 & 0.148 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Results of the correlation coefficient statistical significance test (* \(p\) < 0.05, ** \(p\) < 0.01, *** \(p\) < 0.001). It can be noted that mean LMF-HRV-synchronization on day 6 (HLI day) was significantly different from zero for all five groups. \begin{table}
\begin{tabular}{l c c c c c c c c c c c} \hline \hline
**Day** & **28-February** & **1-March** & **2-March** & **3-March** & **4-March** & **5-March** & **6-March** & **7-March** & **8-March** & **9-March** & **10-March** \\ \hline
28-February & & \(-\)0.15 & \(-\)0.19 & \(-\)0.15 & 0.03 & 0.27 & \(-\)0.02 & \(-\)0.13 & \(-\)0.17 & \(-\)0.17 & \(-\)0.15 \\
1-March & 0.15 & \(-\)0.04 & 0 & 0.18 & 0.42 & 0.13 & 0.02 & \(-\)0.02 & \(-\)0.02 & 0 \\
2-March & 0.19 & 0.04 & 0.04 & 0.22 & 0.46 ** & 0.17 & 0.05 & 0.02 & 0.02 & 0.04 \\
3-March & 0.15 & 0 & \(-\)0.04 & 0.18 & 0.42 ** & 0.13 & 0.02 & \(-\)0.02 & \(-\)0.02 & 0 \\
4-March & \(-\)0.03 & \(-\)0.18 & \(-\)0.22 & \(-\)0.18 & 0.24 & \(-\)0.05 & \(-\)0.17 & \(-\)0.2 & \(-\)0.2 & \(-\)0.18 \\
5-March & \(-\)0.27 & \(-\)0.42 & \(-\)0.46 ** & \(-\)0.42 ** & \(-\)0.24 & \(-\)0.29 & \(-\)0.41 ** & \(-\)0.44 ** & \(-\)0.44 ** & \(-\)0.42 * \\
6-March & 0.02 & \(-\)0.13 & \(-\)0.17 & \(-\)0.13 & 0.05 & 0.29 & & \(-\)0.12 & \(-\)0.15 & \(-\)0.15 & \(-\)0.13 \\
7-March & 0.13 & \(-\)0.02 & \(-\)0.05 & \(-\)0.02 & 0.17 & 0.41 * & 0.12 & & \(-\)0.03 & \(-\)0.03 & \(-\)0.02 \\
8-March & 0.17 & 0.02 & \(-\)0.02 & 0.02 & 0.2 & 0.44 ** & 0.15 & 0.03 & 0 & 0 & 0.02 \\
9-March & 0.17 & 0.02 & \(-\)0.02 & 0.02 & 0.2 & 0.44 ** & 0.15 & 0.03 & 0 & 0 & 0.02 \\
10-March & 0.15 & 0 & \(-\)0.04 & 0 & 0.18 & 0.42 * & 0.13 & 0.02 & \(-\)0.02 & \(-\)0.02 & \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Post hoc test for all pairwise comparisons of LMF-HRV-correlation mean between days for the New Zealand’s group (* \(p<\) 0.05, ** \(p<\) 0.01).