Table 4. Evaluation of autonomic nervous system indices using the postural tilt test (supine position).
| Variable | Control Group | IF Group | ECG Group | LVD Group | p value * |
|---|---|---|---|---|---|
| Total power (ms2) | 2182.99 (1308.00) | 945.9 (1551.00) | 646.37** (589.02) | 1073.10 (2308.01) | 0.002 |
| LFr (ms2) | 560.71 (364.42) | 264.61** (450.93) | 104.75** (68.47) | 178.46** (557.54) | 0.001 |
| HFr (ms2) | 326.89 (178.71) | 73.64** (157.00) | 72.60** (280.00) | 362.60 (1005.11) | < 0.001 |
| LFr (n.u.) | 68.74 (12.35) | 70.78 (21.18) | 63.19 (18.26) | 27.68** (37.57) | 0.022 |
| HFr (n.u.) | 31.01 (11.61) | 29.21 (21.18) | 36.80 (18.26) | 72.31** (39.36) | 0.023 |
| LFr/HFr Ratio | 2.19 (1.36) | 2.42 (2.42) | 1.71 (1.10) | 0.38** (1.10) | < 0.001 |
Values expressed as medians (interquartile range)
* p values were calculated using Kruskal-Wallis test
** p <0.05 compared to control group using Tukey test
LFr: low frequency; HFr: high frequency; ms2: milliseconds squared; n.u.: normalized units.