Percentage Change in Exercise Tolerance From Baseline at 2 Weeks Baseline and after 2 weeks with each treatment [clinicaltrials_resource:e4a3bd709b46896b20ae86db5e81531b]

Formoterol plus Placebo (Tiotropium)

Percentage Change in Exercise Tolerance From Baseline at 2 Weeks Baseline and after 2 weeks with each treatment [clinicaltrials_resource:e4a3bd709b46896b20ae86db5e81531b]

Formoterol plus Placebo (Tiotropium)