Rib Mechanics

The drill is intended to improve pump-handle elevation mechanics of the ribs. Upper thorax expansion is especially important for overhead pressing. Pump-handle activity refers to anterior-posterior expansion of the thorax. The source infers thoracic expansion benefits from shoulder and scapular mechanics rather than presenting direct thoracic expansion measurements. Pump handle mechanics describe anterior and superior movement of the sternum and upper rib cage during inhalation. A pump handle down position corresponds to an exhaled rib cage with a lowered, deflated anterior chest wall. When the pump handle remains down, shortened chest wall structures pull the scapula into abduction and internal rotation. The upper thorax needs anterior, posterior, and lateral expansion capacity. Thoracic work is presented as a foundation for better scapular behavior. The lower thorax and infrasternal angle must be positioned to allow upper thorax pressurization. Persistent pump handle depression can present as limited shoulder internal rotation because shortened external rotators cannot eccentrically lengthen. Overhead and incline positions are proposed as useful because high-elevation shoulder a…