Table 2.
Respiratory functional data of the two obese groups.
| Control group (n = 25) | OSAS group (n = 23) | Total sample (n = 48) | p | |
|---|---|---|---|---|
| FEV1 (L) | 3.26 ± 0.70 | 2.59 ± 0.75 | 2.95 ± 0.79 | 0.005 |
| FEV1 (%) | 99 ± 12 | 83 ± 15 | 91 ± 16 | <0.001 |
| FEF50% (L/s) | 4.45 ± 1.14 | 3.72 ± 1.21 | 4.11 ± 1.21 | 0.057 |
| FEF50% (%) | 98 ± 23 | 85 ± 26 | 92 ± 25 | 0.057 |
| FEF25% (L/s) | 1.43 ± 0.50 | 1.20 ± 0.57 | 1.33 ± 0.54 | 0.217 |
| FEF25% (%) | 74 ± 22 | 69 ± 35 | 72 ± 29 | 0.412 |
| MMEF (L/s) | 3.51 ± 0.90 | 2.99 ± 0.93 | 3.26 ± 0.94 | 0.062 |
| MMEF (%) | 89 ± 19 | 79 ± 26 | 84 ± 23 | 0.138 |
| SVC (L) | 3.98 ± 0.90 | 3.25 ± 0.96 | 3.64 ± 0.99 | 0.017 |
| SVC (%) | 98 ± 14 | 83 ± 12 | 91 ± 16 | <0.001 |
| FVC (L) | 4.00 ± 0.94 | 3.14 ± 1.02 | 3.60 ± 1.06 | 0.006 |
| FVC (%) | 100 ± 13 | 83 ± 14 | 92 ± 16 | <0.001 |
| FEV1/FVC (%) | 82 ± 6. | 79 ± 9 | 81 ± 8 | 0.412 |
| RV (L) | 1.66 ± 0.50 | 1.65 ± 0.72 | 1.66 ± 0.61 | 0.525 |
| RV (%) | 90 ± 22 | 84 ± 32 | 87 ± 27 | 0.241 |
| TLC (L) | 5.65 ± 1.21 | 4.76 ± 1.28 | 5.23 ± 1.31 | 0.018 |
| TLC (%) | 93 ± 14 | 79 ± 12 | 87 ± 15 | <0.0001 |
| DLCO (mmol/KPa/min) | 10.70 ± 2.40 | 8.70 ± 2.40 | 9.80 ± 2.60 | 0.008 |
| DLCO (%) | 112 ± 20 | 93 ± 22 | 103 ± 23 | 0.001 |
| FeNO (ppb) | 18.40 ± 9.20 | 31.30 ± 13.60 | 24.85 ± 11.40 | <0.0001 |
DLCO, carbon monoxide transfer capacity; FEFx%, forced expiratory flow at x% of FVC; FeNO, fraction of exhaled nitric oxide; FEV1, forced expiratory volume at the first second; FVC, forced vital capacity; MMEF, maximal mid-expiratory flow; ns, not significant difference; RV, residual volume; SVC, slow vital capacity; TLC, total lung capacity; %, percentage of predicted value; p, comparison between controls and OSAS groups by the Mann–Whitney U test.