The Epigenetics of Exercise and Physical Activity in COPD

Individuals who are referred to pulmonary rehabilitation IN THE COURSE OF THEIR USUAL CLINICAL CARE will be invited to participate in this observational study. Participants who enroll in the study will undergo two in-person visits, once before initiating pulmonary rehabilitation classes and once at the conclusion of pulmonary rehabilitation classes. Participation in this study will not alter the course of the participants' usual clinical care.