Metabolic, respiratory, and cardiovascular parameters recorded at peak of incremental cardiopulmonary exercise testing (CPET) in patients with unilateral diaphragmatic paralysis and control group
| Paralysis group | Control group | p-value | |
| CPET performance | |||
| Work rate W (% pred) | 83.9±38.5 (54±26) | 152.3±55.2 (90±41) | <0.001 |
| V′O2 mL·kg−1·min−1 (% pred) | 18.7±5.5 (90.2±20.1) | 25.3±9.5 (106.7±21.8) | 0.01 |
| RER | 0.99±0.13 | 1.09±0.09 | 0.01 |
| Ventilation and gas exchange | |||
| VT L | 1.3±0.5 | 1.9±0.4 | <0.001 |
| VT/IC % | 72±11 | 72±8 | 0.93 |
| VE L·min−1 | 51.5±16.9 | 74.7±23.7 | 0.001 |
| RR bpm | 42±9 | 39±9 | 0.24 |
| VE/MVV | 0.6±0.3 | 0.6±0.2 | 0.44 |
| IC L | 1.6±0.4 | 2.8±0.5 | <0.001 |
| Δ IC (peak-rest) L | 0.0±0.2 | 0.6±1 | 0.03 |
| VE/VCO2 | 36±5 | 35±3 | 0.86 |
| SpO2 % | 93±3 | 95±1 | 0.06 |
| Cardiovascular | |||
| HR bpm (% pred) | 138±22 (85±12) | 157±19 (93±10) | 0.003 |
| O2 pulse mL·bpm−1 (% pred) | 14±3 (82±21) | 15±5 (89±28) | 0.15 |
| Symptoms | |||
| Borg modified (dyspnoea) | 9 (7–10) | 5 (3.25–9) | 0.001 |
| Borg modified (legs effort) | 9 (7–10) | 7 (5–8.75) | 0.02 |
Data are presented as mean±sd and median (25th–75th percentile), unless otherwise stated. V′O2: maximal oxygen consumption; RER: respiratory exchange ratio; VT: tidal volume; VE: pulmonary ventilation; RR: respiratory rate; MVV: maximum voluntary ventilation; IC: inspiratory capacity; VCO2: CO2 production; SpO2: peripheral oxygen saturation; HR: heart rate.