VIDEO: D-Bell Chest Press

The pectoralis major attaches to the upper bone of arm bone, called the humerus, and is divided into two parts. The clavicular head makes up the upper part, and the sternal head makes up the lower part.

The muscle fibers of the pectoralis end in a flat tendon, which is inserted into a groove called the intertubercular sulcus, in the upper humerus, located in the upper arm.

The pectoralis major controls various actions to move the shoulder joint:

• Clavicular head flexes the humerus, as in throwing an underhand ball

• Sternocostal head adducts the humerus, as when flapping the arms

• Pectoralis major medially rotates the humerus, as when arm wrestling

• Pectoralis major keeps the arm attached to the trunk

 

 

VIDEO: Blast your Pec's w/ new soreness by doing this 1 simple trick to your Chest Press workout

The pectoralis major attaches to the upper bone of the arm, called the humerus, and is divided into two parts. The clavicular head makes up the upper part, and the sternal head makes up the lower part.

The muscle fibers of the pectoralis end in a flat tendon, which is inserted into a groove called the intertubercular sulcus, in the upper humerus located in the upper arm.

The pectoralis major controls various actions in order to move the shoulder joint:

• Clavicular head flexes the humerus, as in throwing an underhand ball

• Sternocostal head adducts the humerus, as when flapping the arms

• Pectoralis major medially rotates the humerus, as when arm wrestling

• Pectoralis major keeps the arm attached to the trunk

 

DOING SEATED ALTERNATING D-BELL CURLS

DOING SEATED ALTERNATING D-BELL CURLS


Starting Position
Position two dumbbells to sides, palms facing in, arms straight. Direction with elbows to sides, raise one dumbbell and rotate forearm until forearm is vertical and palm faces shoulder. Lower to original position and repeat with opposite arm. Continue to alternate between sides.


Note
Biceps may be exercised alternating (as described), or simultaneously, or in simultaneous-alternating fashion. When elbow is fully flexed, it can travel forward slightly allowing forearms to be no more than vertical.

Learn more at www.greginsd1.blogspot.com and www.betterfly.com/greginsd

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