Pulmonary function results
| No AMS (n=60) | AMS (n=30) | |
|---|---|---|
| Forced vital capacity (FVC) (L) | ||
| Sea level | 5.0±1.0 | 5.1±1.0 |
| Altitude | 4.9±0.9 | 5.2±1.1 |
| Forced expiratory volume in 1 s (FEV1) (L) | ||
| Sea level | 4.0±0.7 | 4.1±0.8 |
| Altitude | 4.1±0.7 | 4.1±0.9 |
| FEV1/FVC (%) | ||
| Sea level | 81.2±5.8 | 79.4±5.8 |
| Altitude | 83.7±5.6* | 80.4±5.2* |
| Forced expiratory flow (FEF) (L/s) | ||
| 25% | ||
| Sea level | 7.8±2.0 | 7.2±2.2 |
| Altitude | 9.0±2.4 | 8.6±2.6 |
| 75% | ||
| Sea level | 1.8±0.6 | 1.8±0.8 |
| Altitude | 2.1±0.8 | 1.8±0.6 |
| Maximum | ||
| Sea level | 9.7±2.1 | 9.6±2.2 |
| Altitude | 10.8±2.1 | 10.7±2.6 |
| Expiratory reserve volume (ERV) (L) | ||
| Sea level | 1.3±0.5* | 1.7±0.6* |
| Altitude | 1.4±0.5* | 1.6±0.4* |
*Significant difference between the AMS and No AMS groups, p<0.05.