Table 1.
Characteristics of the sample
| Variables | (n=98) |
| Sex (male), n (%) | 84 (85.7) |
| Age (years) | 68±8 |
| BMI (kg/m2) | 26.6±4.3 |
| Underweight, n (%) | 2 (2.0) |
| Normal weight, n (%) | 36 (36.7) |
| Overweight, n (%) | 40 (40.8) |
| Obese, n (%) | 20 (20.4) |
| FFMI (kg/m²) | 19.8±2.6 |
| FMI (kg/m²) | 6.7±2.7 |
| Low FFMI, n (%) | 9 (9.2) |
| Body cell mass (kg) | 29±6 |
| Extracellular mass (kg) | 32±6 |
| Body water (L) | 44±8 |
| Intracellular water (L) | 26±3 |
| Extracellular water (L) | 19±4 |
| Phase angle (°) | 5.2±0.9 |
| Low phase angle, n (%) | 25 (25.5) |
| Never smoker, n (%) | 22 (22.4) |
| Pack years | 20(10-40) |
| FVC (%predicted) | 64±18 |
| FEV1 (%predicted) | 72±19 |
| TLC (%predicted) | 71±14 |
| RV (%predicted) | 86±21 |
| DLCO (%predicted)* | 31±15 |
| PaO2 (mm Hg) | 67±12 |
| PaCO2 (mm Hg) | 37±4 |
| LTOT, n (%) | 55 (56.1) |
| CRP (mg/dL) | 6 (3–13) |
| 6MWD (m) | 383±114 |
| 6MWD (%predicted) | 68±20 |
| SF-36 Physical Summary Score | 37±10 |
| SF-36 Mental Summary Score | 43±14 |
Data expressed as frequency, mean±SD or median (IQR 25%–75%).
*N=78.
BMI, body mass index; CRP, C reactive protein; DLCO, diffusion capacity for carbon monoxide; FEV1, forced expiratory volume in 1 s; FFMI, Fat-Free Mass Index; FMI, Fat Mass Index; FVC, forced vital capacity; LTOT, long-term oxygen therapy; 6MWD, 6 min walk distance; PaCO2, arterial carbon dioxidetension; PaO2, arterial oxygen tension; RV, residual volume; SF-36, Short-Form 36-item Questionnaire; TLC, total lung capacity.