We know that there is a link between disorders in the upper and lower airways, both
epidemiologically, patho-physiologically, and therapeutically. What we know less about is the
role for the nose and nasal breathing for physical capacity. That goes both for the ability
of the average, healthy persons well as for patients with ie. asthma and COPD to perform
daily life activities as well as exercise and for top athletes to perform their maximum
oxygen demanding activities. Without this knowledge, we cannot make evidence based decisions
about to what extent measures to open the nose medically and/or surgically should be
considered to improve physical capacity at any level. The aim of the present project is to
expand our knowledge in the field for the best of the ordinary man, patients with airway
disorders, and athletes.