Pinch-lip or pursed-lip breathing exercises, mouth breathing can help you improve breathing difficulties . Pursed-lip breathing helps you get more air in without over-breathing. Some of the effects of pursed-lip breathing are:
Releases large amounts of air trapped in your lungs; Clearing the airways makes it easier for you to breathe; Improve respiratory function; Evens out breathing due to deeper, longer breathing; Help you relax; Helps circulate air in the lungs; Reduce shortness of breath.
Pursed-lip breathing has many benefits for patients with chronic obstructive pulmonary disease (COPD). COPD causes a patient's airway to collapse. By prolonging expiration, pursed-lip breathing creates a small amount of backpressure, known as positive end-expiratory pressure (PEEP). Elastic pressure is generated by elastic contraction of the lung, chest wall (elastance) and volume of air delivered. For a given volume, elastic pressure is increased either by increased pulmonary stiffness (eg, pulmonary fibrosis) or restricted by the chest wall or diaphragm (eg, due to severe ascites or obesity).
Some studies show that pursed-lip breathing improves exercise tolerance in people with COPD. It also improves their ventilation system and increases the amount of oxygen in the blood.
Pursed-lip breathing also gives you a sense of control over your breathing. This can help prevent shortness of breath or anxiety and restlessness caused by shortness of breath.