Phase differences between gas displacement by the thorax and at the airway opening.
D000402:Airway Obstruction; D000403:Airway Resistance; D006801:Humans; D008170:Lung Compliance; D008173:Lung Diseases, Obstructive / Q000503:physiopathology*; D008722:Methods; D012123:Pulmonary Ventilation; D012119:Respiration; D013147:Spirometry