Table 2.
RR intervals, systolic and diastolic blood pressure, skin blood flow at the right index finger pulp, and cerebral blood flow velocity at the middle cerebral artery during baseline, after cooling onset, after 60 and 90 min of neck cooling in 11 healthy participants. Data are presented as mean ± SD
| Baseline | Cooling onset | 60 min | 90 min | Baseline vs. cooling onset | Baseline vs. 60 min | Baseline vs. 90 min | |
|---|---|---|---|---|---|---|---|
| RRI (ms) | 921.0 ± 114.4 | 949.9 ± 98.8 | 1089.1 ± 141.7* | 1060.4 ± 130.0* | p = 0.053 | p < 0.001 | p < 0.001 |
| BPsys (mmHg) | 119.9 ± 13.8 | 130.1 ± 14.2* | 131.0 ± 13.3* | 127.1 ± 12.4 | p < 0.001 | p = 0.018 | p = 0.111 |
| BPdia (mmHg) | 68.8 ± 10.0 | 74.9 ± 10.2* | 76.9 ± 14.7* | 74.6 ± 13.0* | p = 0.008 | p = 0.024 | p = 0.043 |
| SBF right index finger (PU) | 213.2 ± 177.0 | 200.5 ± 151.3 | 130.7 ± 128.7* | 129.9 ± 124.8* | p = 0.594 | p = 0.003 | p = 0.006 |
| CBFV (cm s−1) | 77.3 ± 27.4 | 78.7 ± 25.8 | 78.9 ± 28.1 | 78.5 ± 27.8 | p = 0.610 | p = 0.481 | p = 0.565 |
*Indicates significant differences between baseline values and values after cooling onset and after 60 and 90 min of neck cooling
RRI RR intervals, BPsys systolic blood pressure, BPdia diastolic blood pressure, SBF skin blood flow, CBFV cerebral blood flow velocity, min minutes