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Average of spirometric values during the last three weeks of each treatment.
| Placebo | Diltiazem | Nifedipine | |
|---|---|---|---|
| FVC (l)% predicted | 3.86±0.07 79±1% | 3.98±0.08 81±1% | 3.95±0.09 81±2% |
| FEV1 (l)% predicted | 3.06±0.05 80±2% | 3.08±0.0679±2 | 3.09±0.0780±2 |
| FEF25–75 (l s−1)% predicted | 2.73±0.13 66±4% | 2.67±0.13 64±4% | 2.76±0.15 66±4% |
