Capnometry-Assisted Breathing Training for COPD

Tailored intervention emphasizing slow, quiet, regular nasal breathing pattern.

Patients in both treatment groups will participate in a 10 week (16-20 sessions) comprehensive PR program. The control group will receive the 10-Week PR program with traditional breathing training sessions (without biofeedback). The program comprises 2 or 3 exercise training sessions per week by physical therapists (each 1 hour duration).