Table 3. Evaluation of autonomic nervous system indices using the 24-hour Holter.
| Variable | Control Group | IF Group | ECG Group | LVD Group | p value * |
|---|---|---|---|---|---|
| Total power (ms2) | 2091.41 (1102.40) | 1181.28 (817.30)** | 1202.53 (1316.20) | 1178.97** (771.30) | 0.03 |
| LFr (ms2) | 678.00 (524.70) | 422.30 (316.70) | 324.30 (442.00) | 284.90** (316.60) | 0.007 |
| HFr (ms2) | 170.00 (161.50) | 63.50** (56.60) | 94.40 (153.10) | 58.80 (181.60) | 0.008 |
| LFr (n.u.) | 75.60 (15.20) | 86.20** (7.10) | 81.60 (26.50) | 75.00 (30.00) | 0.022 |
| HFr (n.u.) | 24.30 (15.20) | 13.70** (7.10) | 18.30 (19.90) | 24.90 (30.00) | 0.016 |
| LFr/HFr Ratio | 3.10 (3.30) | 6.20** (3.00) | 4.40 (5.80) | 3.00 (4.20) | 0.028 |
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.