Female subjects who are pregnant

Subjects unable to give informed consent

Subjects unable to perform required activities of the study (e.g. Six minute walk test)

Subjects with an implanted electronic device (e.g. a cardiac pacemaker)

Subjects who have had a chronic obstructive pulmonary disease exacerbation within 30 days prior to enrollment

Considerable arthritic changes that limit exertion

Patients on oral prednisone

Patients with a hernia

Patients with a history of pneumothorax within the last 5 years

History of epilepsy

History of Abnormal electrocardiogram suggestive of cardiac disease

Abdominal Functional Electrical Stimulation to Reduce Hyperinflation in Chronic Obstructive Pulmonary Disease Patients