The objective of this study is to evaluate the effects on exercise duration of 96 weeks treatment with 18 mcg tiotropium (Spiriva HandiHaler) daily as compared to placebo, in patients with COPD.
Oral inhalation once daily of 18mcg tiotropium via handihaler
Oral inhalation of once-daily placebo matching tiotropium via handihaler
Rosario, Argentina
Vicente López, Argentina