Table 2.
Averages for metrics of autonomic cardiovascular regulation for a heterogeneous clinical population (n = 131), for subjects with rightward versus leftward dominance of temporal high frequency electrical activity, using a range of values for defining asymmetry. Metrics analyzed include heart rate, the standard deviation of all normal RR intervals (SDNN), spectral high frequency (HF), and baroreflex sensitivity (BRS). P values ≤0.05 are indicated with an asterisk
| Heart rate (beats/min) | SDNN (ms) | HF (ms2) | BRS (ms/mmHg) | |
|---|---|---|---|---|
| ≥5% asymmetry | ||||
| T3 group average (n = 45) | 63.8 | 46.0 | 971.3 | 14.8 |
| T4 group average (n = 64) | 72.3 | 39.6 | 620.7 | 13.0 |
| P value | 0.004* | 0.09 | 0.16 | 0.32 |
| ≥10% asymmetry | ||||
| T3 group average (n = 36) | 63.0 | 46.2 | 1098.8 | 14.6 |
| T4 group average (n = 51) | 71.5 | 41.3 | 694.0 | 14.2 |
| P value | 0.01* | 0.27 | 0.18 | 0.86 |
| ≥20% asymmetry | ||||
| T3 group average (n = 30) | 64.2 | 46.4 | 1141.9 | 14.3 |
| T4 group average (n = 42) | 72.2 | 42.4 | 765.3 | 14.7 |
| P value | 0.05* | 0.44 | 0.30 | 0.89 |
| ≥30% asymmetry | ||||
| T3 group average (n = 25) | 64.6 | 46.7 | 1022.7 | 15.2 |
| T4 group average (n = 33) | 71.4 | 41.1 | 718.3 | 14.0 |
| P value | 0.05* | 0.32 | 0.44 | 0.68 |
| ≥40% asymmetry | ||||
| T3 group average (n = 20) | 63.5 | 46.2 | 948.0 | 16.4 |
| T4 group average (n = 23) | 69.1 | 37.2 | 473.9 | 10.6 |
| P value | 0.09 | 0.17 | 0.21 | 0.03* |
| ≥50% asymmetry | ||||
| T3 group average (n = 16) | 64.2 | 46.2 | 790.9 | 16.7 |
| T4 group average (n = 19) | 67.5 | 35.3 | 435.6 | 10.4 |
| P value | 0.37 | 0.13 | 0.33 | 0.05* |