Inspiratory and expiratory vital capacity.
Vital capacity (VC) is frequently measured by two different methods (inspiration vs expiration). The difference in results is not readily available in the literature. The VC was measured both ways in 60 subjects, including many with obstructive airway disease. Only a minor difference in mean VC (75 +/- ml SD) was found. The methods are probably interchangeable.
D000368:Aged; D006801:Humans; D007320:Inspiratory Capacity; D008173:Lung Diseases, Obstructive / Q000175:diagnosis; D008875:Middle Aged; D013147:Spirometry / Q000379:methods; D014797:Vital Capacity