The Effect of Physical Exercise in a Cold Air Environment on Normal Volunteers and Asthmatic Patients

Subjects will perform a submaximal 90 minutes exercise test in a controlled cold air environment (-5°C, 60% relative humidity) in a climate chamber with evaluation pre§/during\*/post§ of heart rate (HR)§\* and blood pressure (BP)§\*, spirometry§\*, PNIF§, FeNO§, electrocardiogram (ECG)§\*, body \& exhaled air temperature§\*, capsaicin cough threshold test§, histamine bronchial challenge test§, and sampling of nasal fluid§, induced sputum§, and venous blood§.