Table 1.
Physical characteristics and ergoespirometric variables during incremental and sprint exercise in normoxia and severe acute hypoxia (mean ± SD).
| Normoxia | Hypoxia | |
|---|---|---|
| Age (years) | 25.2 ± 4.7 | |
| Height (cm) | 176.0 ± 5.1 | |
| Weight (Kg) | 80.2 ± 9.9 | |
| % body fat | 18.3 ± 6.7 | |
| Two-Legs lean mass (Kg) | 19.5 ± 2.4 | |
| SHRpeak (Beats/min) | 175.2 ± 8.0 | 173.5 ± 9.2* |
| VO2max (L/min) | 3.850 ± 0.308 | 2.586 ± 0.208* |
| Wmax (W) | 356.3 ± 38.62 | 285.3 ± 32.1* |
| Wpeak (W) | 999.11 ± 129.0 | 944.3 ± 131.3 |
| Wpeak/Kg LLM (W/kg) | 16.6 ± 2.0 | 15.6 ± 1.4 |
| Wmean (W) | 575.3 ± 60.7 | 539.8 ± 69.0* |
| Wmean/Kg LLM (W/kg) | 9.56 ± 0.85 | 8.95 ± 0.78* |
| O2 Demand (L/min) | 8.390 ± 0.798 | 7.830 ± 0.765* |
| Accumulated VO2 (L) | 1.192 ± 0.406 | 0.847 ± 0.123* |
| O2 deficit (L) | 3.003 ± 0.498 | 3.068 ± 0.399 |
| O2 deficit/Wmean | 5.24 ± 0.83 | 5.70 ± 0.45* |
| Wingate SpO2 | 98.7 ± 0.6 | 80.6 ± 4.4* |
| Wingate PETO2 | 114.1 ± 6.9 | 48.8 ± 3.3* |
SHRpeak, peak heart rate during the sprints; Wmax, maximal intensity during the incremental exercise test to exhaustion; Wpeak, peak power output during the Wingate test; LLM, lean mass of the lower extremities; Wmean, mean power output during the Wingate test; Accumulated VO2, amount of O2 consumed during the 30 s Wingate test; SpO2, Hemoglobin saturation (pulse oximetry); PETO2, end tidal O2 pressure.
*
P < 0.05 compared to normoxia.