Table 3.
Baseline measures of cardiorespiratory coupling and baroreflex control evaluated by transfer function analysis.
| Rest_tVNS off (n = 13) | Rest_tVNS on (n = 13) | P | |
|---|---|---|---|
| RESP-RRi | |||
| K2HF (%) | 93 (88–98) | 95 (90–98) | 0.55 |
| SAP-RRi | |||
| GainLF (ms/mmHg) | 12 (9–27) | 15 (10–26) | 0.37 |
| GainHF (ms/mmHg) | 17 (11–36) | 18 (14–36) | 0.99 |
| K2LF (%) | 75 (65–84) | 73 (59–85) | 0.72 |
| K2HF (%) | 96 (89–97) | 95 (87–98) | 0.51 |
Median (25th–75th). tVNS = transcutaneous vagus nerve stimulation; RESP = respiration; RRi = R–R interval; SAP = systolic arterial pressure; K2 = coherence; LF = low frequency band; HF = high frequency band.