Aerobic exercise
Exercise is the cornerstone of pulmonary rehabilitation programs. Although, exercise training does not directly improve lung function, it causes several physiological adaptations to exercise that can improve physical condition. There are three basic types of exercises to be considered. Aerobic exercise tends to improve the body's ability to use oxygen by decreasing the heart rate and blood pressure. Strengthening or resistance exercises can help build strength in the respiratory muscles. Stretching and flexibility exercises like yoga and Pilates can enhance breathing coordination. As exercise can trigger shortness of breath, it is important to build up the level of exercise gradually under the supervision of health care professionals (e.g., respiratory therapist, physiotherapist, exercise physiologist). Additionally pursed lip breathing can be used to increase oxygen level in patient's body. Breathing games can be used to motivate patients to learn pursed lip breathing technique.