This invention provides methods and systems for non-invasively determining thepresence (and amount) or absence of dynamic hyperinflation in a subject. Theinvention is based on a novel combination of respiratory parameters that canbe measured in a way that is non-invasive and unobtrusive to the subject. Dynamic hyperinflationis often a significant factor in the quality of life of patients suffering froma variety of obstructive pulmonary diseases, and this invention permits simple,routine tracking and management of dynamic hyperinflation in affected patients.
