Table 3.

Response to the standardized exercise challenge.

Response	Placebo	Diltiazem	Nifedipine
Subjects completing at leastone challenge (N)*	19	18	17
Oxygen consumption(ml kg−1 min−1)	28±2	29±2	28±2
Mean percentage ΔFEV1	−32±4	−27±3	−32±4
Subjects completing allthree challenges (n)	12	12	12
Oxygen consumption(ml kg−1 min−1)	28±2	27±1	27±2
Mean percentage ΔFEV1	−31±5	−25±4	−30±5

^*Subjects with an FEV₁<65% did not perform the exercise challenge for safety reasons.