OMT sessions are designed to improve chest wall compliance and diaphragmatic function which produce an immediate positive change in pulmonary function parameters and chest wall mobility. This research project will be a significant step in expanding the understanding of the role of OMT in the treatment of chronic lung disease. It is expected to yield evidence that OMT is an important adjunctive modality that improves pulmonary function, increases exercise tolerance, relieves dyspnea, and improves quality of life in those with COPD, and that would have widespread clinical application plus significant economic benefits.