Clinical and functional characteristics of the different groups studied
| BMI >30 kg·m−2 | BMI <30 kg·m−2 | |||||||
| Control | OSAS (at diagnosis) | OSAS (after CPAP) | ANOVA p‐value | Control | OSAS (at diagnosis) | OSAS (after CPAP) | ANOVA p‐value | |
| Subjects n | 4 | 6 | 7 | 7 | 6 | 4 | ||
| Age yrs | 60±7 | 41±4 | 57±5 | NS | 58±4 | 54±3 | 57±6 | ns |
| BMI kg·m−2 | 31±0.2 | 33±1.3 | 32±1 | NS | 23±1.3 | 28±0.3* | 26±0.6 | 0.006 |
| FEV1 % reference | 82±10 | 93±9 | 82±8 | NS | 82±10 | 87±13 | 82±13 | ns |
| FVC % reference | 85±6 | 92±10 | 88±7 | NS | 85±6 | 93±12 | 89±5 | ns |
| AHI h−1 | NA | 57±8 | 64±15 | NS | NA | 67±8 | 60±11 | ns |
| CPAP compliance h | 7±1 | 7±1 | ||||||
Data are presented as mean±sd
BMI: body mass index
FEV1: forced expiratory volume in one second
FVC: forced vital capacity
ANOVA: analysis of variance
CPAP: continuous positive airway pressure
AHI: apnoea/hypopnea index (recorded at the time of diagnosis in both groups of patients with obstructive sleep apnoea syndrome (OSAS))
NA: not available
* indicates p<0.05 compared to the control group
ns: nonsignificant