Exercise guide · evidence-graded

Cable Bicep Curl

The cable curl is a biceps curl done with a bar attached to a low pulley. It works the biceps, with the brachialis assisting, and the cable keeps tension on the muscle more evenly through the curl than a dumbbell does.

Also called: Cable Curl, Cable Curls, Standing Cable Curl, Cable Biceps Curl · Equipment: cable · Pattern: pull

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How to do it

Step by step

Attach a straight bar to a low pulley. Take an underhand grip about shoulder-width apart, with your wrists straight.
Stand tall and step back half a pace, so the cable is taut and the stack lifts slightly with your arms fully straight.
Set your elbows at your sides and brace your trunk lightly.
Curl the bar up by bending your elbows, keeping your upper arms still, until the bar reaches upper-chest height.
Squeeze your biceps briefly at the top, where the cable is still pulling.
Straighten your arms under control until they are fully straight and the stack is still just off its rest.
After the last rep, step forward to let the stack settle before you release the bar.

Coaching cues

Cable taut before the first rep
Elbows pinned at your sides
Curl around your elbows
Control the bar all the way down
Squeeze at the top
Torso still, no rocking

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

Muscles worked

What it trains

Muscle	Role	Evidence
Biceps brachii: long head	Prime mover	A
Biceps brachii: short head	Prime mover	A
Brachialis	Secondary	B
Brachioradialis	Secondary	C
Forearm flexors	Stabiliser	D
Anterior deltoid	Dynamic stabiliser	C

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

Common faults

What goes wrong, and the fix

Standing too close

Fix: Step back until the stack lifts slightly with your arms fully straight.

Leaning back or rocking

Fix: Stand tall with a light brace and pick a load you can curl without rocking.

Elbows drifting forward

Fix: Keep your elbows fixed at your sides throughout the rep.

Letting the arms snap straight

Fix: Straighten your arms under control to full extension on every rep.

Wrists curling or bending back

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

Programming

What the research says

Muscle growth · first choiceRehab & prehabGeneral fitnessEndurance

Long muscle lengths — A curl training study found that training the elbow flexors with a straighter elbow, at longer muscle lengths, produced more biceps and brachialis growth than training with a bent elbow.
Shoulder position — Two training trials found that curls with the shoulder extended behind the body produced similar arm growth to curls with the shoulder neutral or in front, when effort and range were matched.
Grip — An EMG study found an underhand grip produced the highest biceps activity compared with neutral and overhand grips. EMG measures activity, not growth.
Rep ranges and effort — Research finds muscle growth is similar across a wide range of loads when sets are taken close to failure, and that true failure adds only a small extra benefit over finishing a rep or two short.
Volume and frequency — Research links more weekly sets for a muscle to more growth, with diminishing returns, and training a muscle about twice a week has been associated with more growth than once.
Isolation and compound work — A trial in untrained men found single-joint and multi-joint arm training gave similar gains in elbow-flexor size and strength.

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 bicep 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.