Table 3.
Different parameters of heart rate variability during baseline
| Time Domain Parameters | |
|---|---|
| CV | 6.75 ± 2.61 |
| VAR | 4302 ± 3377 |
| SDNN | 61.17 ± 24.55 |
| SENN | 3.35 ± 1.44 |
| SDSD | 61.76 ± 34.06 |
| RMSSD | 61.67 ± 34.01 |
| NN50 | 33.83 ± 21.17 |
| Frequency Domain Parameters | |
| LF | 1260 ± 1157 |
| LF (nu) | 42.28 ± 16.22 |
| HF | 953.90 (430.2-2613) |
| HF (nu) | 50.63 ± 16.23 |
| TP | 2743 (1873-5301) |
| LF/HF | 0.76 (0.56-1.64) |
Normally distributed data is are expressed as mean ± SD, and non-parametric data is expressed as median (inter-quartile range). CV, coefficient of variance; VAR, variance; SDNN, standard deviation of RRI or square root of the variance; SENN, standard error of RRI; SDSD, standard deviation of the differences between adjacent RRI; RMSSD, square root of the mean of the sum of the squares of differences between adjacent RRI; NN50, number of those adjacent RRIs which differ by more than 50ms; LF, absolute power in low-frequency band; nu, normalized unit; HF, absolute power in high-frequency band; TP, total power; LF/HF, ratio of LF-to-HF power