Statistical comparison used students t-test and χ2 tests
| Total n=70 | Group A n=33 | Group B n=37 | Comparison of group AandB | |
| Age, years; mean±SD | 20.8 (6.6) | 20.3 (5.0) | 21.4 (7.8) | 0.51 |
| M/F | 60/10 | 31/2 | 29/8 | 0.09 |
| Height, cm; mean±SD | 177.7 (8.3) | 178.8 (7.7) | 176.7 (8.8) | 0.28 |
| Weight, kg; mean±SD | 64.4 (12.1) | 64.8 (10.2) | 64.1 (13.8) | 0.80 |
| Haller’s Index; mean±SD | 4.1 (1.4) | 4.2 (1.3) | 4.0 (1.6) | 0.56 |
| Spirometry | ||||
| FEV1, % predicted; mean±SD | 92.0 (12.8) | 94.3 (12.8) | 90.7 (12.7) | 0.25 |
| FVC, % predicted; mean±SD | 91.8 (11.9) | 93.9 (12.1) | 89.9 (11.5) | 0.16 |
| IC, % predicted; mean±SD | 86.0 (14.8) | 87.5 (13.0) | 84.6 (16.3) | 0.43 |
FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity.