What movements are involved in the hammer curl exercise?

The hammer curl exercise primarily targets the muscles of the upper arm, particularly the brachialis and brachioradialis, which are engaged during elbow flexion. The correct movements involved in this exercise are specifically related to the position and movement of the arms. In the context of hammer curls, the elbow flexion movement is the key focus, as it is caused by bending the elbow while holding the weights with a neutral grip (palms facing each other).

Additionally, while shoulder adduction occurs to some extent when the arm is brought closer to the body, it is less prominent compared to the primary movement of elbow flexion. The mention of scapular medial rotation acknowledges the stabilization of the shoulder during this action but is not the primary focus of the hammer curl. Therefore, the combination of elbow flexion and the supporting movements accurately describes the mechanics at play during this exercise.