CHEST
Pectoralis Major (Clavicular)
Joint Action of the Shoulder (glenohumeral)- Horizontal adduction
- Internal Rotation
- Adduction
- Flexion
- Abduction
Example – Brings the arm across the body. Pushes forward (Protraction)
Origin – Clavicle (Anterior) at the medial half
Insertion – Humerus (Proximal and Anterior) located within the intertubercular groove
Sports associated with these movements include gymnastics and swimming
Weight training movements include but are not limited to Chest press, dumbbell flies,
Lat. Pulldowns
Common distortions due to tightness include an internally rotated humerus contributing to
scapular fixation while abducting.
PECTORALIS MINOR
Joint action of the Scapula- Abduction
- Downward rotation (during abduction)
- Depression
Joint Action of the Ribs
- Elevation.
For example it pulls coracoid process of scapula inferiorly.