Table1: Spirometric indices in different body positions
| Positions(Mean ± SD) | Left side lying | Crook lying | Right side lying | Sitting | Supine |
| FEV1 L | 2.66 ± 0.53 | 2.61 ± 0.63 | 2.64 ± 0.46 | 2.62 ±0.48 | 2.62 ± 0.44 |
| FVC L | 3.23 ± 0.79 | 3.17 ± 0.80 | 3.17 ± 1.04 | 3.35 ±0.62 | 3.22 ± 0.66 |
| PEFR L/s | 6.46 ± 1.70 | 6.42 ± 1.69 | 6.34 ± 1.29 | 6.83 ±1.22 | 6.20 ± 1.43 |