Table 4 Cardiovascular, metabolic, thermoregulatory and subjective data upon termination of each hypoxic stress test
HST NORM | HST HEAT | HST HYP | HST COM | |
|---|---|---|---|---|
Cardiovascular | ||||
HR (beats · min-1) | 150 ± 16 | 146 ± 16 | 150 ± 13 | 145 ± 17 |
SpO2 (%) | 83 ± 2 | 82 ± 2 | 83 ± 2 | 82 ± 2 |
Cardiac output (L · min-1) | 16.9 ± 2.7 | 15.9 ± 2.6 | 16.1 ± 2.6 | 16.0 ± 2.8 |
Stroke volume (mL · beat-1) | 117 ± 31 | 110 ± 22 | 111 ± 27 | 113 ± 26 |
difference (mL · L-1) | 11.1 ± 0.9 | 11.1 ± 1.4 | 11.1 ± 1.2 | 11.0 ± 0.9 |
Plasma volume (% change) | 1.8 ± 7.6 | 8.3 ± 7.7 | 2.1 ± 4.7 | 3.1 ± 6.4 |
Metabolic | ||||
VO2 (L · min-1) | 1.89 ± 0.41 | 1.77 ± 0.41 | 1.79 ± 0.32 | 1.75 ± 0.42 |
VCO2 (L · min-1) | 1.85 ± 0.33 | 1.70 ± 0.32 | 1.73 ± 0.31 | 1.66 ± 0.3 |
RER | 0.99 ± 0.10 | 0.97 ± 0.10 | 0.98 ± 0.10 | 0.95 ± 0.10 |
V E STPD (L · min-1) | 50.3 ± 11.3 | 46.0 ± 13.1 | 47.3 ± 8.8 | 42.1 ± 8.4 |
V E BTPS (L · min-1) | 59.6 ± 9.7 | 56.0 ± 16.0 | 57.9 ± 11.0 | 51.4 ± 10.0 |
Thermoregulatory | ||||
T core (°C) | 37.9 ± 0.2 | 37.7 ± 0.5 | 37.9 ± 0.2 | 37.7 ± 0.3 |
T skin (°C) | 32.1 ± 1.5 | 32.1 ± 1.1 | 32.1 ± 1.5 | 32.5 ± 1.8 |
T body (°C) | 36.7 ± 0.3 | 36.5 ± 0.4 | 36.8 ± 0.3 | 36.7 ± 0.5 |
PSI (AU) | 5.1 ± 0.8 | 4.6 ± 1.4 | 5.0 ± 0.9 | 4.6 ± 0.9 |
Perceptual | ||||
RPE (AU) | 15 ± 3 | 15 ± 2 | 14 ± 2 | 14 ± 1 |
TS (AU) | 6 ± 1 | 5 ± 1 | 5 ± 1 | 5 ± 1 |