Vitabreath Pilot in Chronic Obstructive Pulmonary Disease (COPD) Patients

Inclusion Criteria: * Age ≥ 40 * Ability to provide consent * COPD diagnosis * Forced Expiratory Volume in one second (FEV1) \<55 and ≥ 25 percent of predicted value * Perceived Shortness of Breath via the Modified Medical Research Counsel Dyspnea questionnaire (rating of 2 or greater) (Appendix B) * Able to follow directions * Able to tolerate mild physical activity * Pursed Lip Breathing as standard of care * No evidence of bullous lung disease (with any bullae greater than 3cm in diameter) as confirmed by a CT scan within the past one year. Exclusion Criteria: * Subjects who are acutely ill, medically complicated or who are medically unstable as determined by the investigator. * Suffering from COPD exacerbation at time of enrollment or 60 days prior * Subjects who are not currently prescribed oxygen and manifest oxygen desaturation below 88% on the screening 6MWT * Subjects with heart disease or neuromuscular disease. * Subjects who are not prescribed short-acting bronchodilator medication * Patients who have experienced recent barotrauma or pneumothorax * Unstable angina or Myocardial Infarction during past month * Uncontrolled Hypertension (systolic blood pressure of \>180mmHg (millimeters of Mercury) and a diastolic \>100mmHg) * Heart Rate \>120 at rest * Subjects who have trouble coordinating their breathing with the device during the device training, or cannot tolerate the device mouthpiece resulting in leaks from the nasal cavity * Women of child-bearing potential (WOCP) who are pregnant, breast-feeding, or planning pregnancy during the course of the study. (WOCP must have a negative pregnancy test at every visit)