Assessment Of The Inhalation Profiles Of Four Dry Powder Inhalers In Patients With Variable Degrees Of Lung Obstruction

Inclusion Criteria: * Subjects with a physician documented history or diagnosis of asthma for at least 6 months * Reversibility, defined as an increase in FEV1 at the Screening visit of greater than or equal to 12% and 200 mL * Subjects with a physician documented history or diagnosis of mild or severe Chronic Obstructive Pulmonary Disease Exclusion Criteria: * Female subjects who are pregnant * Subjects who have a history of life-threatening asthma/COPD or who have experienced two or more exacerbations requiring hospitalization in the 12 months prior to screening * Evidence of lower respiratory tract infection * Subjects diagnosed with pulmonary fibrosis, bronchiectasis, pneumoconiosis, sarcoidosis or tuberculosis