Copyright © 2015 by the American Osteopathic Association. From: Improving Exercise Tolerance and Quality of Life in Patients With Chronic Obstructive Pulmonary Disease J Am Osteopath Assoc. 2009;109(5):268-278. doi:10.7556/jaoa.2009.109.5.268 Figure Legend: Lung volume in a healthy patient compared to that of a patient with chronic obstructive pulmonary disease (COPD). Abbreviations: FRC, functional residual capacity; IC, inspiratory capacity; RV, residual volume; TLC, total lung capacity. Date of download: 12/27/2017 Copyright © 2015 by the American Osteopathic Association. All rights reserved.