Which breathing technique involves using the diaphragm for breath control?

Diaphragmatic breathing is a technique that primarily utilizes the diaphragm, a large muscle located beneath the lungs, to facilitate more efficient and effective breathing. When practicing this technique, the focus is on actively engaging the diaphragm by allowing it to contract and expand, which helps in drawing air deep into the lungs. This type of breathing encourages a fuller inhalation and a more complete exhalation, which can improve oxygen exchange and promote relaxation.

In contrast, the other techniques mentioned serve different purposes. Segmental breathing often focuses on expanding particular areas of the lungs and may not emphasize diaphragmatic engagement as a primary method. Lateral costal breathing encourages expansion of the rib cage's lateral segments, which may involve the intercostal muscles rather than primarily the diaphragm. Pursed lip breathing is a technique used to improve ventilation and reduce anxiety during breathing, but it does not specifically focus on using the diaphragm for breath control.

Thus, diaphragmatic breathing stands out as the technique most specifically designed to utilize the diaphragm for effective breath control.