| Constituencies | Time | FEV1 (L) | FEV1% | FEV1/FVC |
| Experimental group | Before treatment | 1.43 ± 0.42 | 42.54 ± 4.21 | 51.84 ± 5.32 |
| After treatment | 1.96 ± 0.38 | 58.21 ± 5.34 | 58.65 ± 8.64 | |
| Reference group | Before treatment | 1.42 ± 0.39 | 42.48 ± 4.19 | 51.81 ± 5.29 |
| After treatment | 1.68 ± 0.40 | 50.64 ± 4.65 | 53.54 ± 6.65 |