Table 2.
Variables | Patients (n = 10) | Controls (n = 10) | p |
---|---|---|---|
O2 L min−1 (%pred) | 0.83 ± 0.47 (32 ± 7) | 1.94 ± 0.36 (74 ± 10) | 0.001 |
O2 mL kg−1 min−1 | 12.8 ± 6.90 | 28.8 ± 3.25 | 0.001 |
CO2 L min−1 | 0.89 ± 0.52 | 2.02 ± 0.56 | 0.001 |
RER | 1.21 ± 0.21 | 1.10 ± 0.08 | 0.622 |
E L min−1 | 34 ± 17 | 61 ± 18 | 0.006 |
E/MVV | 0.69 ± 0.31 | 0.67 ± 0.19 | 0.836 |
f breaths min−1 | 48 ± 11 | 36 ± 5 | 0.003 |
VT | 0.74 ± 0.40 | 1.71 ± 0.35 | 0.001 |
HR bpm | 156 ± 9 | 158 ± 8 | 0.957 |
SpO2 final % | 82 ± 11 | 95 ± 1 | 0.002 |
Delta SPO2% | − 15 ± 10 | − 3 ± 1 | 0.006 |
Borg Dyspnea (range) | 3–10 | 0–9 | |
Borg Leg Effort (range) | 0–9 | 0–10 |
O2: oxygen consumption; CO2: carbon dioxide output; RER: Respiratory Exchange Ratio; E: minute ventilation; MVV: maximum voluntary ventilation; f: breathing frequency; VT: tidal volume; HR: heart rate; SpO2: oxyhemoglobin saturation by pulse oximetry.