Is the cable version better than using dumbbells or a barbell?

Not better, just different. The cable gives a smooth pull and an easy way to change the weight, while the Dumbbell Palms-Down Wrist Curl lets each wrist work on its own and the Barbell Palms-Down Wrist Curl needs no machine, so use whichever setup you have.

Why can I lift so much less palms-down than palms-up?

The wrist flexors on the palm side are the stronger group. In a study of healthy volunteers tested on a wrist dynamometer, wrist flexion strength exceeded extension strength by about 40% on average, so a much lighter stack setting is normal here.

Is this the same as a reverse curl?

No. A reverse curl such as the Cable Reverse Grip Curl bends the elbow and mainly works the brachioradialis and elbow flexors, while this exercise keeps the elbow still and moves only the wrist.

How many sets and reps should I do?

Two to three sets of 12 to 20 controlled reps, once or twice a week, is enough for most people. Choose a weight that lets you finish every rep with the forearms flat on the thighs.

Should I do this with wrist or elbow pain?

Not through sharp or worsening pain. Get it checked, and if you have an injury, let a healthcare professional set the load and timing.

Cable Palms-Down Wrist Curl

What Is the Cable Palms-Down Wrist Curl?

Cable Palms-Down Wrist Curl is an isolation exercise that primarily targets the forearms, specifically the wrist extensors on the back of the forearm. It is a beginner-level movement done seated on the end of a flat bench in front of a low pulley, holding a straight bar palms down with the forearms resting on the thighs so that only the wrists move.

The wrist extensors raise the back of the hand and hold the wrist steady whenever you grip something. Most pulling and curling work leans on the stronger flexors on the palm side, so the extensors get little direct training unless you add it. That is why this exercise usually sits at the end of an arm or pulling session, often paired with the Cable Palms-Up Wrist Curl so both sides of the forearm get trained.

The cable version differs from the Dumbbell Palms-Down Wrist Curl and the Barbell Palms-Down Wrist Curl mainly in how the load is delivered. The cable gives a smooth, steady pull from the pulley, and the pin-selected stack makes it simple to start light and change the weight quickly. Both hands share one bar, so the stronger side can quietly do more of the work; the dumbbell version lets each wrist work on its own.

This exercise suits beginners and anyone who wants more balanced forearm strength, including people who grip a lot in racket sports, climbing or manual work. The extensors are a small muscle group, so the working weight is far lighter than for palms-up wrist curls. If even the lightest stack setting is too much, the Band Palms-Down Wrist Curl is an easier place to start.

Muscles Worked

MuscleActivation

Extensor Carpi Radialis: Primary
Brachioradialis: Low
Flexor Carpi Radialis: Minimal
Flexor Carpi Ulnaris: Minimal

Instructions

Attach a short straight bar to a low pulley and set a flat bench close in front of the machine.
Sit on the end of the bench facing the pulley, feet flat on the floor about hip-width apart.
Take the bar with an overhand grip, palms facing down, hands about hip-width apart.
Lean forward and rest your forearms on your thighs so your wrists and hands hang just past your knees, with the cable taut.
Let your wrists bend down until your knuckles point toward the floor.
Raise the backs of your hands as high as is comfortable by extending your wrists, keeping your forearms flat on your thighs.
Pause briefly at the top.
Lower the bar slowly to the start without letting the weight rest on the stack.
Repeat for the desired reps, then return the bar to the pulley under control.

Common Mistakes

Setting the stack too heavy
The wrist extensors are small, so a weight that suits the palms-up version usually shortens the range and pulls the forearms off the thighs.
Lifting the forearms off the thighs
Raising the forearms or elbows turns the rep into an arm movement and takes the work away from the wrists.
Letting the cable go slack
If the weight rests on the stack at the bottom of the rep, the wrists get no load there, so set the bench where the cable stays taut.
Cutting the range short
Move from knuckles pointing toward the floor to the backs of the hands raised as high as is comfortable.
Letting the stack pull the wrists down
Dropping quickly into the bottom loads the stretched tendons, so lower the bar slowly on every rep.

Injuries

Cable Palms-Down Wrist Curl is a low risk exercise when performed with proper technique. The load is light and the forearms are supported, but the wrist extensors are small and share a tendon at the outside of the elbow, the spot affected in tennis elbow. Too much weight, high volume added too quickly or letting the stack pull the wrists down fast can irritate that tendon or the back of the wrist.

Start with a stack setting you can lift through the full range with the forearms flat on the thighs, and lower every rep slowly. Pick the bar up from the pulley and return the stack under control rather than letting it drop, so the wrists are never jerked into a bent position. Training the palms-up side as well keeps the forearm work balanced.

To make it easier, drop the stack, work one hand at a time or switch to the Band Palms-Down Wrist Curl. To progress, add weight in the smallest steps the stack allows or slow the lowering phase. Stop if you feel sharp pain at the outer elbow or the back of the wrist, or any numbness or tingling in the hand, and get existing elbow or wrist pain checked by a healthcare professional before loading it.

Overview

Primary Focus: Forearms
Equipment: Cable and bench
Modality: Strength
Difficulty: Beginner

Alternative Exercises

Frequently Asked Questions

Q: Is the cable version better than using dumbbells or a barbell?: Not better, just different. The cable gives a smooth pull and an easy way to change the weight, while the Dumbbell Palms-Down Wrist Curl lets each wrist work on its own and the Barbell Palms-Down Wrist Curl needs no machine, so use whichever setup you have.
Q: Why can I lift so much less palms-down than palms-up?: The wrist flexors on the palm side are the stronger group. In a study of healthy volunteers tested on a wrist dynamometer, wrist flexion strength exceeded extension strength by about 40% on average, so a much lighter stack setting is normal here.
Q: Is this the same as a reverse curl?: No. A reverse curl such as the Cable Reverse Grip Curl bends the elbow and mainly works the brachioradialis and elbow flexors, while this exercise keeps the elbow still and moves only the wrist.
Q: How many sets and reps should I do?: Two to three sets of 12 to 20 controlled reps, once or twice a week, is enough for most people. Choose a weight that lets you finish every rep with the forearms flat on the thighs.
Q: Should I do this with wrist or elbow pain?: Not through sharp or worsening pain. Get it checked, and if you have an injury, let a healthcare professional set the load and timing.