## 3 Results
\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 & & 0.26 & 0.24 & 0.36 & 0.16 & 0.66 *** & 0.43 * & 0.23 & 0.17 & 0.33 & 0.38 * \\
1-March & \(-\)0.26 & & \(-\)0.03 & 0.1 & \(-\)0.11 & 0.40 * & 0.17 & \(-\)0.03 & \(-\)0.09 & 0.07 & 0.12 \\
2-March & \(-\)0.24 & 0.03 & & 0.13 & \(-\)0.08 & 0.42 ** & 0.19 & \(-\)0.01 & \(-\)0.06 & 0.1 & 0.15 \\
3-March & \(-\)0.36 & \(-\)0.1 & \(-\)0.13 & \(-\)0.13 & 0.07 & \(-\)0.13 & \(-\)0.19 & \(-\)0.03 & \(-\)0.19 & \(-\)0.03 & 0.02 \\
4-March & \(-\)0.16 & 0.11 & 0.08 & 0.21 & & 0.50 *** & 0.27 & 0.07 & 0.02 & 0.18 & 0.23 \\
5-March & \(-\)0.66 *** & \(-\)0.40 & \(-\)0.42 ** & \(-\)0.3 & \(-\)0.50 *** & \(-\)0.23 & \(-\)0.43 * & \(-\)0.49 ** & \(-\)0.33 & \(-\)0.28 \\
6-March & \(-\)0.43 * & \(-\)0.17 & \(-\)0.19 & \(-\)0.07 & \(-\)0.27 & 0.23 & & \(-\)0.2 & \(-\)0.26 & \(-\)0.11 & \(-\)0.05 \\
7-March & \(-\)0.23 & 0.03 & 0.01 & 0.13 & \(-\)0.07 & 0.43 * & 0.2 & & \(-\)0.06 & 0.1 & 0.15 \\
8-March & \(-\)0.17 & \(-\)0.09 & 0.06 & 0.19 & \(-\)0.02 & 0.49 ** & 0.26 & 0.06 & & 0.16 & 0.21 \\
9-March & \(-\)0.33 & \(-\)0.07 & \(-\)0.1 & 0.03 & \(-\)0.18 & 0.33 & 0.1 & \(-\)0.1 & \(-\)0.16 & & 0.05 \\
10-March & \(-\)0.38 * & \(-\)0.12 & \(-\)0.15 & \(-\)0.02 & \(-\)0.23 & 0.28 & 0.05 & \(-\)0.15 & \(-\)0.21 & \(-\)0.05 & \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Post hoc test for all pairwise comparisons of LMF-HRV-correlation mean between days for the California’s group (* \(p<\) 0.05, ** \(p<\) 0.01, ** \(p<\) 0.001). \begin{table}
\begin{tabular}{l 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 & & 0.11 & 0.15 & 0.11 & 0.14 & 0.31 & 0 & 0.06 & 0.17 & 0.26 & 0.11 \\
1-March & \(-\)0.11 & & 0.04 & 0 & 0.04 & 0.2 & \(-\)0.1 & \(-\)0.05 & 0.07 & 0.16 & 0 \\
2-March & \(-\)0.15 & \(-\)0.04 & & \(-\)0.04 & \(-\)0.01 & 0.16 & \(-\)0.15 & \(-\)0.09 & 0.03 & 0.11 & \(-\)0.04 \\
3-March & \(-\)0.11 & 0 & 0.04 & & 0.04 & 0.21 & \(-\)0.1 & \(-\)0.05 & 0.07 & 0.16 & 0.01 \\
4-March & \(-\)0.14 & \(-\)0.04 & 0.01 & \(-\)0.04 & & 0.17 & \(-\)0.14 & \(-\)0.08 & 0.03 & 0.12 & \(-\)0.03 \\
5-March & \(-\)0.31 & \(-\)0.2 & \(-\)0.16 & \(-\)0.21 & \(-\)0.17 & \(-\)0.31 * & \(-\)0.25 & \(-\)0.14 & \(-\)0.05 & \(-\)0.2 \\
6-March & 0 & 0.1 & 0.15 & 0.1 & 0.14 & 0.31 * & 0.06 & 0.17 & 0.26 & 0.11 \\
7-March & \(-\)0.06 & 0.05 & 0.09 & 0.05 & 0.08 & 0.25 & \(-\)0.0 As shown in Figure 3, in the Lithuania group, day 6 (HLI day) was significantly different to all other days in the study period. Day \(11\) was different from three of the other days (including day 6). In terms of significant differences between days, the California and New Zealand groups were next with the HLI day (day 6) being significantly different from six of the other days. Day 6 was also significantly different than day 7 in the Saudi Arabia group, and day 6 was significantly different than day 8 in the UK group.