Cable Hammer Curl (Rope)

Which muscles does it train?

Equipment needed

How to perform it

Isolation work is usually trained in a higher rep range: 2 to 4 sets of 10 to 15 reps with 45 to 90 seconds of rest, performed under control.

Execution and technique cues

• Attach a rope to the low pulley, stand upright with feet shoulder-width apart, and grip both rope ends with a neutral grip, thumbs pointing up.
• Pin your upper arms against the sides of your torso and keep them there throughout the entire rep so the elbows act as a fixed pivot point.
• Curl the rope upward until the forearms are near vertical and you feel a strong contraction in the brachialis and biceps, keeping the wrists neutral throughout.
• Lower the rope slowly back to full arm extension to train the brachialis and brachioradialis through the full range of motion.

Common mistakes

• Letting the elbows drift forward during the curl, which brings the front deltoid into the movement and reduces tension on the elbow flexors.
• Supinating the wrist at the top, turning it into a standard biceps curl. The neutral grip is the defining feature of the hammer curl and should be maintained throughout.
• Using excessive weight and shortening the range of motion, particularly at the bottom, which removes the stretch stimulus from the brachialis.

Frequently asked questions

What muscles does the cable hammer curl with a rope primarily target?

The primary targets are the brachialis and brachioradialis. The biceps brachii is also active but is not as preferentially loaded as in a supinated curl because the neutral grip reduces its mechanical advantage.

Why use a rope attachment instead of a straight bar for hammer curls?

The rope allows the wrists to stay in a truly neutral position without being forced into pronation or supination. At the top of the rep, you can spread the rope ends apart slightly to increase peak contraction. A straight bar locks the hands in place and can cause wrist discomfort for some people.

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