title: Perception of changes in airflow resistance in obstructive pulmonary disorders.
mesh_terms: D000328:Adult; D000368:Aged; D000403:Airway Resistance; D001249:Asthma / Q000503:physiopathology; D001784:Blood Gas Analysis; D005541:Forced Expiratory Volume; D005652:Functional Residual Capacity; D006801:Humans; D006935:Hypercapnia / Q000503:physiopathology; D008173:Lung Diseases, Obstructive / Q000503:physiopathology*; D008875:Middle Aged; D010465:Perception; D014797:Vital Capacity