| FEV1 (L/min) | FVC (L) |
R 5 Hz (kPa/(L/s)) | −0.32 | 0.29 |
R 2O Hz (kPa/(L/s)) | −0.17 | 0.23 |
X 5 Hz (kPa/(L/s)) | 0.60* | 0.64* |
X 2O Hz (kPa/(L/s)) | 0.33 | 0.34 |
Z (kPa/(L/s)) | 0.43* | 0.43 |