Cable Supine Curl
Muscles
Target
Biceps Brachii
Synergists
Brachialis
Brachioradialis
Stabilizers
Deltoid, Anterior
Trapezius, Upper
Trapezius, Middle
Levator Scapulae
Wrist Flexors
Instructions
Preparation
Sit on floor with feet or heels against pulley machine. Grasp low pulley cable bar with a shoulder width under hand grip. Lie back on floor with arms to sides.
Execution
With elbows to side, pull bar until elbows are flexed. Lower until arms are fully extended. Repeat.
Comments
When elbows are fully flexed, elbows should only travel up slightly allowing forearm to be no more than horizontal to allow for a relative release of tension in muscles between repetitions.
Source: exrx.net