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Characteristics of heart rate variability indexes from deep breathing test [Median (interquartile range, IQR)].
| HRV Index | Median [IQR] |
|---|---|
| Mean heart rate | 80.70 [74.33–88.66] |
| SDNN (ms) | 66.47 [46.92–91.03] |
| RMSSD (ms) | 39.91 [28.20–59.69] |
| PNN50% | 17.44 [7.20–30.33] |
