Overview Mechanisms of Dyspnea Relief During Exercise in COPD Patients Following Treatment With Tiotropium (Spiriva) Status: Completed Trial end date: 2003-03-01 Target enrollment: Participant gender: Summary To explore the mechanisms of dyspnea relief during exercise in patients with COPD following treatment with tiotropium bromide (Spiriva) Phase: Phase 3 Details Lead Sponsor: Boehringer IngelheimTreatments: BromidesTiotropium Bromide