Table 2.
Maximal inspiratory and expiratory static pressures at different lung volumes for the female subjects.
| Expiratory | Pressure | Inspiratory | Pressure | ||
| Volume (%VC) | Positive Pressure (cmH2O) | Pe/Pmax | Volume (%VC) | Negative Pressure (cmH2O) | Pi/Pmax |
| 8.9 ± 0.7 | 38.7 ± 25.0 | 0.5864 | 12.1 ± 0.9 | 65.9 ± 31.6 | 0.9985 |
| 18.4 ± 1.0 | 44.2 ± 25.9 | 0.6697 | 22.5 ± 1.3 | 65.0 ± 31.6 | 0.9848 |
| 27.6 ± 1.3 | 53.4 ± 30.7 | 0.8091 | 33.0 ± 1.8 | 59.6 ± 32.0 | 0.9030 |
| 37.3 ± 1.5 | 53.7 ± 28.8 | 0.8136 | 43.3 ± 2.0 | 55.0 ± 32.0 | 0.8333 |
| 46.8 ± 1.9 | 53.3 ± 28.9 | 0.8076 | 53.5 ± 2.2 | 53.0 ± 32.9 | 0.8030 |
| 56.2 ± 2.2 | 55.4 ± 29.6 | 0.8394 | 63.8 ± 2.6 | 47.6 ± 28.3 | 0.7212 |
| 65.7 ± 2.6 | 57.3 ± 33.2 | 0.8682 | 73.6 ± 2.6 | 42.3 ± 28.6 | 0.6409 |
| 74.7 ± 3.2 | 61.7 ± 38.5 | 0.9398 | 83.1 ± 2.7 | 34.2 ± 27.4 | 0.5182 |
| 84.4 ± 3.2 | 61.2 ± 39.0 | 0.9273 | 92.6 ± 2.4 | 28.0 ± 29.0 | 0.4242 |
Volumes are expressed in percent of vital capacity at ambient pressure. All values are shown with standard deviations. Pmax for females was determined to be 66 cmH2O.