TABLE 2.
Physiologic effect of training in all subjects. N = 17. All measurements done during acute hypobaric hypoxia (HH), 429 mmHg barometric pressure (PiO2 = 0.14) before and after training (mean ± SEM). *p <0.05. Abbreviations: HH, hypobaric hypoxia; HR, heart rate; PP, pulse pressure; SBP, systolic blood pressure; V̇O2peak, peak oxygen uptake; VT, ventilatory threshold by modified V-slope method.
| HIIT+Air | HIIT+HBO2 | p-Value Training Effect | p-Value Interaction Training x Exposure | |||
|---|---|---|---|---|---|---|
| Pre | Post | Pre | Post | |||
| V̇O2peak HH (mL·kg−1·min−1) | 29.0 ± 3.1 | 33.2 ± 2.5 | 31.4 ± 1.5 | 35.2 ± 1.2 | 0.0045* | 0.9 |
| VT HH (mL·kg−1·min−1) | 21.3 ± 2.4 | 23.6 ± 2.0 | 18.6 ± 1.8 | 21.8 ± 2.0 | 0.016* | 0.7 |
| Peak Workload HH (W) | 214 ± 13 | 217 ± 22 | 191 ± 13 | 200 ± 16 | 0.32 | 0.6 |
| Resting SBP HH (mmHg) | 118 ± 4 | 120 ± 4 | 125 ± 7 | 117 ± 4 | 0.14 | 0.6 |
| Resting HR HH (bpm) | 95 ± 3 | 92 ± 2 | 98 ± 9 | 88 ± 6 | 0.15 | 0.3 |
| Peak SBP HH (mmHg) | 148 ± 5 | 154 ± 6 | 141 ± 7 | 139 ± 7 | 0.8 | 0.4 |
| Peak HR HH (bpm) | 178 ± 5 | 176 ± 4 | 174 ± 3 | 178 ± 3 | 0.6 | 0.6 |
| Increase in PP Rest to Peak HH Exercise (mmHg) | 29 | 41 | 28 | 23 | 0.7 | 0.05 |