Table 3.
Maximal inspiratory and expiratory static pressure at different lung volumes for the male subjects.
| Expiratory | Pressure | Inspiratory | Pressure | ||
| Volume (%VC) | Positive Pressure (cmH2O) | Pe/Pmax | Volume (%VC) | Negative Pressure (cmH2O) | Pi/Pmax |
| 8.2 ± 1.0 | 63.2 ± 32.6 | 0.6196 | 13.5 ± 2.0 | 96.7 ± 45.5 | 0.9480 |
| 17.2 ± 1.3 | 75.3 ± 39.0 | 0.7382 | 24.2 ± 2.8 | 95.3 ± 49.8 | 0.9343 |
| 26.2 ± 1.6 | 84.1 ± 39.9 | 0.8245 | 35.2 ± 3.2 | 97.3 ± 52.2 | 0.9539 |
| 35.2 ± 2.2 | 91.6 ± 38.3 | 0.8980 | 45.9 ± 3.6 | 87.2 ± 42.3 | 0.8549 |
| 44.8 ± 2.6 | 89.6 ± 41.3 | 0.8784 | 55.7 ± 3.2 | 77.9 ± 36.9 | 0.7637 |
| 53.5 ± 2.7 | 93.3 ± 36.3 | 0.9147 | 66.7 ± 4.2 | 75.4 ± 42.2 | 0.7392 |
| 62.6 ± 3.4 | 94.6 ± 44.3 | 0.9275 | 76.5 ± 4.5 | 69.4 ± 40.4 | 0.6804 |
| 72.1 ± 3.8 | 94.2 ± 43.3 | 0.9235 | 85.5 ± 4.9 | 51.4 ± 38.4 | 0.5039 |
| 80.8 ± 4.2 | 97.2 ± 41.5 | 0.9529 | 94.2 ± 5.1 | 38.9 ± 38.8 | 0.3814 |
Volumes are expressed in percent of vital capacity at ambient pressure. All values are shown with standard deviations. Pmax for males was determined to be 102 cmH2O.