Pectoralis Major: Function and Importance in Upper Body Strength Training

pectoralis major

upper chest muscle that adducts and flexes upper arm

The pectoralis major is a large, fan-shaped muscle that makes up the bulk of the chest muscle. It originates from the clavicle, sternum, and upper ribs, and inserts into the humerus.

Functionally, the pectoralis major is responsible for a variety of movements of the shoulder joint. It is a powerful adductor, meaning it brings the arm towards the body. It is also a flexor, meaning it lifts the arm up towards the shoulder. Additionally, it plays a role in internal and external rotation of the arm.

The pectoralis major is an important muscle for athletes, particularly those involved in activities that require upper body strength and power such as weightlifting, football, and swimming. It can be trained through exercises like bench press, push-ups, flyes, and dips.

However, it is important to note that overly focusing on chest exercises can lead to muscle imbalances and ultimately increase the risk of injury. Therefore, it is important to incorporate a balanced strength training program that targets all major muscle groups.

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