Diaphragm

Breathing work may matter for low back pain or surgery history because it can affect how the lower back is loaded and controlled. Chest breathing is more physiologically stressful than diaphragmatic belly breathing. A 3–5 second pause after complete exhalation allows the diaphragm to reach its fully ascended position without triggering external oblique co-contraction. Elevating the hips above the torso is intended to help gravity push the diaphragm upward. The diaphragm contributes to trunk stability as well as respiration. The diaphragm is the only skeletal muscle in the body with both involuntary and voluntary function. The drill uses body position and gravity to influence diaphragm movement. The diaphragm has anatomical continuity with the upper lumbar spine through its crura and related ligaments. When the diaphragm contracts, it creates negative pressure that draws oxygen into the lungs. The diaphragm is described as both a breathing muscle and a structure attached to much of the lower back region. When the diaphragm flattens, its pull on the lower ribcage changes so that lateral rib dimensions shrink and the ribs straighten rather than remaining bent. Diaphragm descent durin…