Inspiratory Flow Parameters With Placebo Easyhaler and Placebo HandiHaler

This is an open, randomised, multicentre, crossover study with Easyhaler and HandiHaler inhalers. The primary objective is to characterise inspiratory flow parameters across placebo dry powder inhaler Easyhaler (2 inhaler versions) and placebo Spiriva inhalation powder capsule inhaled via HandiHaler in patients with chronic obstructive pulmonary disease (COPD) and in healthy volunteers. The secondary objective is to calculate correlation of peak inspiratory flow (PIF) rate with regards to anthropometric and lung function parameters. Substudy: This is an open, randomised, multicentre, crossover study with Easyhaler and HandiHaler inhalers.There will be 1 study visit per subject, usually this visit is done at the same visit with the main study.