Barlbell Curl Execution 1. Hold a barbell at arms’ length, using a shoulder-width underhand grip. 2. Curl the bar up to shoulder level by bending your elbows. 3. Lower the bar back down to the arms’ extended position. Muscles Involved Primary: Biceps. Secondary: Brachialis, brachioradialis, anterior deltoid, forearm. Anatomic Focus Hand spa cing : A wide grip focuses effort on the inner biceps (short head), whereas a narrow grip works the outer biceps (long head). Grip: With a straight bar, the underhand grip is fixed in supination (palms upward). Grip may be adjusted using an EZ bar (see Variation section). Trajectory: The bar should move up and down in an arc close to the body. To isolate the biceps, motion should occur at the elbow and not the shoulder. Range of motion : Stopping a few degrees short of full elbow extension keeps tension on the biceps as the barbell is lowered. Body position: Stand upright with the spine straight. Ti...
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