Exercise guide · evidence-graded

Cable Hammer Curl

The cable hammer curl is an arm exercise in which you curl a cable attachment, usually a rope, from a low pulley with your palms facing each other. It works the brachialis and the forearm muscle along the thumb side (brachioradialis) alongside the biceps, with the cable keeping tension on the arms through the whole rep.

Also called: Rope Hammer Curl, Cable Neutral-Grip Curl, Rope Cable Curl · Equipment: cable · Pattern: pull

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How to do it

Step by step

Attach a rope to the low pulley of a cable machine and select the weight.
Take one end of the rope in each hand with your palms facing each other, then step back so the cable is taut with your arms straight.
Stand tall with your feet about hip-width apart, knees soft and elbows by your sides.
Curl the rope up by bending at the elbows, keeping your upper arms still and your palms facing each other.
Finish with your hands close to your shoulders and pause for a moment at the top.
Straighten your arms under control until your elbows are fully extended, keeping tension on the cable.
After the last rep, step towards the machine and let the weight settle before releasing the rope.

Coaching cues

Elbows pinned to your sides
Palms facing each other throughout
Curl up, then pause at the top
Upper arms still, only the forearms move
Straighten fully at the bottom

In VALDA, these cues are one tap away on the exercise while you train.

Muscles worked

What it trains

Muscle	Role	Evidence
Brachialis	Prime mover	C
Brachioradialis	Prime mover	C
Biceps brachii: long head	Secondary	C
Biceps brachii: short head	Secondary	C
Forearm flexors	Stabiliser	D

Evidence grades: A = strong research base · B = good · C = limited · D = coaching consensus.

Common faults

What goes wrong, and the fix

Elbows drifting forward

Fix: Keep your elbows by your sides and move only at the elbow.

Swinging the torso

Fix: Stand tall with soft knees and pick a weight you can curl without rocking.

Cutting the bottom short

Fix: Let your elbows straighten fully before starting the next curl.

Letting the stack yank the arms down

Fix: Take two seconds to straighten your arms, keeping the cable taut.

Wrists bending back

Fix: Keep your wrists straight, knuckles in line with your forearms.

Programming

What the research says

Muscle growth · first choiceEndurance · first choiceRehab & prehabGeneral fitness

Muscle activity — EMG studies show a palms-facing grip produces less biceps activity than a palms-up grip. That measures activity, not growth.
Load and effort — Research finds muscle growth is similar across a wide range of loads when sets are taken close to failure. Studies show finishing a few reps short of failure captures most of the benefit.
Volume — Research links more weekly sets for a muscle to more growth, with diminishing returns. There is no research specific to the cable hammer curl.
Cables and free weights — A meta-analysis found machine and free-weight training give similar muscle growth. There is no direct research comparing cable and dumbbell hammer curls.
Rep ranges — Cable hammer curls are commonly done for 10–20 reps, and the weight stack makes drop sets simple.

Alternatives · VALDA FLEX

Swap it mid-workout

With VALDA Pro, FLEX offers alternatives like these when you swap an exercise mid-workout.

Log the cable hammer curl in VALDA, with these cues one tap away while you train and your history for it in one place.

General information about exercise technique, not medical advice. If you have an injury or a health condition, your healthcare provider is the right person to ask.