- The results for all three ECG metrics were mapped for the sampling interval of 5 s. The parameters with a positive value are coloured blue, and those with a negative value are coloured orange. HR heart rate, RMSSD root mean square of successive differences, and SDNN standard deviation of NN intervals, CI confidence intervals.
- Â ns = p > 0.05
- *p ≤ 0.05
- ***p ≤ 0.001