Table 1.
Mean (± SD) values of systolic (SAP) and diastolic (DAP) arterial pressure, heart rate (HR), and changes in cerebral frontal cortex deoxyhaemoglobin (Δ[HHb]) and total haemoglobin (Δ[THb]) obtained during the 4-min baseline (B), the 4-min plateau at 2 and 3 G, and the 3-min recovery (R), with (AGS) and without (NoAGS) the anti-G-suit pressurised
| 2-G NoAGS | 2-G AGS | 3-G NoAGS | 3-G AGS | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B | G plateau | R | B | G plateau | R | B | G plateau | R | B | G plateau | R | |
| SAP (mmHg) | 127 ± 22 | 114 ± 29* | 122 ± 27 | 119 ± 18 | 114 ± 24 | 122 ± 22 | 125 ± 18 | 107 ± 29* | 123 ± 26 | 125 ± 23 | 124 ± 26† | 126 ± 24 |
| DAP (mmHg) | 46 ± 9 | 33 ± 11* | 46 ± 8 | 45 ± 8 | 35 ± 9* | 46 ± 8 | 46 ± 5 | 22 ± 9*‡ | 47 ± 7 | 45 ± 8 | 34 ± 11* | 49 ± 10 |
| HR (beats min−1) | 72 ± 12 | 86 ± 12*# | 75 ± 14 | 69 ± 11 | 79 ± 13*†† | 73 ± 13 | 71 ± 11 | 103 ± 13*§ | 79 ± 16 | 71 ± 12 | 89 ± 11* | 77 ± 15 |
| Δ[HHb] (μM) | 0 | −1.96 ± 3.10 | 0.76 ± 1.83 | 0 | −0.58 ± 1.91 | −0.30 ± 1.18 | 0 | −0.20 ± 2.89 | 2.44 ± 2.88 | 0 | −0.64 ± 2.94 | 1.26 ± 1.83 |
| Δ[THb] (μM) | 0 | −3.51 ± 4.10* | 2.49 ± 3.57 | 0 | −1.62 ± 3.55 | 0.47 ± 1.91 | 0 | −4.77 ± 5.04*§ | 6.11 ± 5.23 | 0 | −3.48 ± 5.28* | 3.06 ± 4.45 |
n = 10
* Significantly different from the baseline and recovery
†Significantly different from 2-G NoAGS, 2-G AGS, and 3-G NoAGS
‡Significantly different from 2-G NoAGS, 2-G AGS, and 3-G AGS
§Significantly different from 3-G AGG
#Significantly different from 2-G AGS and 3-G NoAGS
††Significantly different from 3-G NoAGS and 3-G AGS