Dumbbell Reverse Wrist Curl

A dumbbell reverse wrist curl is a resistance exercise, which involves the primary wrist extensors, the extensor carpi radialis brevis and longus and extensor carpi ulnaris. This exercise is performed with two dumbbells while kneeling on the floor. The concentric portion of the lift is wrist extension, which involves the lifting of the weight. The eccentric portion is wrist flexion, which involves the descent of the weight.

The purpose of dumbbell reverse wrist curls is to strengthen the wrist extensors while promoting hypertrophy (increases in size) of the forearms.

Dumbbell reverse wrist curls strengthen and increase the size of the primary wrist extensors, the extensor carpi radialis brevis and longus and extensor carpi ulnaris. By activating the wrist extensors, reverse wrist curls increase forearm strength and aesthetics. Stronger forearms also complement exercise performance when training larger muscle groups and with multi-joint exercises.

Performing this exercise with dumbbells, as opposed to with an EZ bar or barbell, allows the lifter to isolate the contraction of both forearms, individually, throughout the set. This can also help the lifter detect strengths and weaknesses between arms, if any.

The wrist extensors are located on the backside of the forearms with their origins on the lateral side of the elbows (with palms facing out, the side of the elbow furthest from your body). Their insertions are located at the wrists and hands.

The primary wrist extensors are the extensor carpi radialis longus, extensor carpi radialis brevis and extensor carpi ulnaris. The extensor carpi radialis longus runs parallel and next to the brachioradialis. It originates at the lateral supracondylar ridge of the humerus near the elbow joint and inserts at the base of the second metacarpal of the hand.

The extensor carpi radialis brevis, as its name indicates, is a shorter extensor muscle that lies underneath the extensor carpi radialis longus. It originates at the lateral epicondyle of the humerus at the elbow joint and inserts at the base of the third metacarpal of the hand.

The extensor carpi ulnaris originates at the lateral epicondyle of the humerus at the elbow joint and inserts at the base of the 5th metacarpal of the hand.

Aiding in wrist extension are the extensor digitorum and extensor indicis. The extensor digitorum lies next to the extensor carpi ulnaris, originating at the lateral epicondyle of the humerus at the elbow joint and inserting by four tendons into the middle phalanges of all fingers except the thumb. The extensor indicis is a small muscle located close to the wrist. Its origin is located at the lower end and backside of the ulna. Its insertion is located at the extensor expansion of the index finger, joining the tendon of the extensor digitorum that inserts into the 2nd phalange (index finger).

Barbell reverse wrist curls, EZ bar reverse wrist curls, Cable reverse wrist curls.

Reverse wrist curls improve the strength and performance of the wrist extensors, improving forearm contribution to other exercises. Reverse wrist curls also complement the aesthetics of the forearms by increasing their size.

Reverse wrist curls may be performed in a simultaneous fashion (as described) or in an alternating fashion. You may also do a set with one arm at a time to fully isolate the wrist extensors of each arm.

Forearm training should be done at the end of an exercise session that trains upper body (e.g. biceps and back) to not jeopardize the quality of exercise when training larger muscle groups. For example, reverse curls and hammer curls activate the brachioradialis, which increases the strength and size of the forearms. Reverse wrist curls performed after a training session that included reverse curls and/or hammer curls would complement the aesthetics of the posterior muscles of the forearm.

Focus on the concentric portion of the contraction, concentrating on “squeezing” at the end of wrist extension as the dumbbells are lifted.

Emphasis on eccentric contractions, prolonging the eccentric portion of the contraction, may also be incorporated in a training program focused on increasing strength. This should be implemented accordingly and with adequate muscle recovery as eccentric contractions cause substantial damage to muscle tissue.


It’s important to note that your repetition and set volume will depend on your goals (e.g. strength, hypertrophy, muscular endurance). Strategically varying your intensity (load) and volume (number of repetitions in a set) will optimize forearm development with time.

Training forearms before training larger muscle groups can decrease the quality of a lifting session if forearm muscles are fatigued initially. Many resistance exercises (e.g. biceps exercises) activate the forearm muscles in the process to assist with larger muscles. This is why it is important to train them after training large muscles, at the end of a session.

Bouncing the dumbbell at the bottom of the movement before the upward phase can result in wrist injury. Therefore, it is important to control the downward and upward phases of the exercise.

If proper technique is not adhered to (e.g. dropping the weight quickly instead of controlling the descent on the eccentric portion of the lift, lifting a load too heavy for the lifter), the likelihood of injury increases.

If proper recovery is not implemented between training days for optimal muscle repair of the wrist extensors, the wrist extensors’ tendons become inflamed. Without proper rest and treatment, the inflammation remains and results in tendonitis.