Dataset from A Randomised, Double- Blind, 2 Way Cross-over Study to Determine 24-hour FEV1-time Profile of Inhaled Tiotropium, Delivered Via the Respimat Inhaler, After 4 Weeks of Once Daily [5 mcg in the Evening (2 Actuations of 2.5 mcg)] or Twice Daily [2.5 mcg in the Morning and Evening (2 Actuations of 1.25 mcg)] Administration in Patients With Moderate Persistent Asthma.

Determine the 24-hour FEV1-profile of tiotropium solution for inhalation after 4 weeks treatment periods of 5 mcg tiotropium administered once daily in the evening and 2.5 mcg tiotropium administered twice daily (morning and evening). In addition compare the 24 hours pharmacokinetic profile of 5 mcg tiotropium administered once daily and 2.5mcg tiotropium administered twice daily in pharmacokinetic sub-investigation.