| Rest | Peak | |||
| Cycle | Treadmill | Cycle | Treadmill | |
| Work rate W | 0±0 | 0±0 | 73±20 | 78±28 |
| Exercise time min:s | 0±0 | 0±0 | 14:13±01:15 | 15:05±01:06 |
| Dyspnoea Borg scale | 0.1±0.2 | 0.1±0.2 | 6.6±2.8 | 6.6±2.4 |
| Leg discomfort Borg scale | 0.1±0.3 | 0.2±0.3 | 6.6±2.9 | 5.0±2.7** |
| V'O2 L·min−1 | 0.41±0.14 | 0.42±0.14 | 1.53±0.40 | 1.79±0.52 |
| V'O2 % pred maximum | 20.4±6.7 | 20.5±4.9 | 78.1±25.7 | 90.7±30.3** |
| V'CO2 L·min−1 | 0.35±0.12 | 0.34±0.12 | 1.49±0.39 | 1.65±0.51** |
| RER | 0.84±0.06 | 0.82±0.09 | 0.98±0.07 | 0.92±0.10** |
| V'E L·min−1 | 14.8±4.2 | 15.1±4.2 | 47.4±10.8 | 49.3±13.7 |
| VT L | 0.78±0.21 | 0.85±0.35 | 1.30±0.34 | 1.34±0.41 |
| fR breaths·min−1 | 20±5.3 | 20±6.0 | 36±6.1 | 37±7.1 |
| tI/tTOT | 0.38±0.05 | 0.38±0.04 | 0.40±0.04 | 0.41±0.04 |
| IC L | 2.50±0.75 | 2.44±0.71 | 1.84±0.37 | 1.79±0.47 |
| VT/IC % | 32.5±9.9 | 34.6±8.5 | 72.3±11.1 | 74.6±9.2 |
| IRV L | 1.73±0.69 | 1.59±0.48 | 0.51±0.22 | 0.45±0.18 |
| EELV L | 3.31±0.79 | 3.4±0.79 | 3.97±0.92 | 4.07±0.94 |
| EILV L | 4.09±0.82 | 4.30±0.89 | 5.31±1.12 | 5.42±1.13* |
| EILV/TLC % | 70.7±7.9 | 72.8±6.1 | 91.1±3.8 | 92.1±3.5* |
| V'E/MVV % | 29±1 | 29±1 | 90±2 | 92±2 |
| V'E/V'O2 | 36.8±5.0 | 37.1±7.7 | 31.7±6.1 | 28.0±5.9** |
| V'E/V'CO2 | 43.9±6.8 | 45.3±7.7 | 32.4±5.0 | 30.4±4.8** |
| PETCO2 mmHg | 34±2.8 | 33±3.8 | 37±5.5 | 39±6.0** |
| Heart rate beats·min−1 | 77±2.7 | 79±10.2 | 119±12.8 | 128±14.6** |
| SpO2 % | 95±1.8 | 95±2.0 | 92±2.7 | 90±3.3** |
Data are presented as mean±sd. V'O2: oxygen uptake; V'CO2: carbon dioxide production; RER: respiratory exchange ratio; V'E: minute ventilation; VT: tidal volume; fR: respiratory frequency; tI/tTOT: inspiratory duty cycle; IC: inspiratory capacity; IRV: inspiratory reserve volume; EELV: end-expiratory lung volume; EILV: end-inspiratory lung volume; TLC: total lung capacity; V'E/MVV: ventilatory equivalent for maximum voluntary ventilation; V'E/V'O2: ventilatory equivalent for oxygen uptake; V'E/V'CO2: ventilatory equivalent for carbon dioxide production; PETCO2: end-tidal carbon dioxide tension; SpO2: arterial oxygen saturation measured by pulse oximetry. *: p<0.05; **: p<0.01 cycle versus treadmill.