TABLE 1.
Baseline Subject Characteristics including all subjects. All measurements performed before training at sea-level (SL) and during hypobaric hypoxia (HH) (mean ± SEM). †p-value represents comparison between groups. HH testing performed in a hypobaric chamber, PiO2 = 0.14. Abbreviations: BMI, body mass index; HR, heart rate; PiO2, pressure of inspired oxygen; RER, respiratory exchange ratio; SBP, systolic blood pressure; SL, sea-level; V̇O2peak, peak oxygen consumption.
| HIIT+Air | HIIT+HBO2 | All | p-Value† | |
|---|---|---|---|---|
| N | 9 | 8 | 17 | |
| Age (years) | 27.8 ± 1.9 | 25.0 ± 1.7 | 26.5 ± 1.3 | 0.3 |
| Sex (M/F) | 5/4 | 5/3 | 10/7 | |
| BMI (kg/m2) | 25.4 ± 0.8 | 23.7 ± 0.8 | 24.6 ± 0.6 | 0.14 |
| Body Fat (%) | 19.1 ± 3.1 | 13.8 ± 2.3 | 16.6 ± 2.0 | 0.18 |
| Resting HR SL (bpm) | 76.9 ± 4.3 | 72.0 ± 3.2 | 74.6 ± 2.7 | 0.37 |
| Resting SBP SL (mmHg) | 121.2 ± 3.7 | 118.6 ± 4.2 | 120.1 ± 2.7 | 0.64 |
| V̇O2peak SL (mL·kg−1·min−1) | 41.7 ± 3.3 | 45.2 ± 2.7 | 43.4 ± 2.1 | 0.42 |
| RER SL | 1.21 ± 0.03 | 1.24 ± 0.01 | 1.23 ± 0.02 | 0.3 |
| Peak Work SL (Watt) | 253.9 ± 18.4 | 237.4 ± 22.0 | 246.2 ± 13.9 | 0.57 |
| Baseline V̇O2peak HH (mL·kg−1·min−1) | 29.0 ± 3.1 | 31.4 ± 1.5 | 30.1 ± 1.7 | 0.49 |
| RER HH | 1.32 ± 0.07 | 1.34 ± 0.06 | 1.33 ± 0.05 | 0.84 |