Table 1.
Characteristics of the study population (n = 32 volunteers)
| Demographic variables | Value |
|
|---|---|---|
| average ± SD or n (%) | range | |
| Total number of participants, n | 32 | |
| Sex | ||
| Female | 16 (50) | |
| Male | 16 (50) | |
| Age, years | 48.4±11.5 | 30–68 |
| Height, cm | 163.3±7.7 | 147.7–177.0 |
| Weight, kg | 60.3±10.8 | 41.6–88.0 |
| Body mass index | 22.5±3.0 | 16.7–30.6 |
| Pulmonary function test | ||
| VC, L | 3.71±0.83 | 2.51–5.41 |
| FVC, L | 3.64±0.83 | 2.49–5.39 |
| FVC, % predicted | 102.9±11.0 | 82.9–124.8 |
| FEV1, L | 2.90±0.66 | 1.81–4.20 |
| FEV1, % predicted | 98.7±12.8 | 70.6–117.2 |
| FEV1/FVC, % | 80.1±6.2 | 60.1–91.4 |
| Tidal volume, L | 0.63±0.22 | 0.40–1.53 |
| Residual volume, L | 1.54±0.36 | 0.82–2.25 |
| Functional residual capacity, L | 2.98±0.73 | 2.08–4.68 |
| Total lung capacity, L | 5.25±1.08 | 3.45–7.43 |
SD, standard deviation; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; VC, vital capacity.