Barbell Curl (Reverse Grip)
What Is the Barbell Curl (Reverse Grip)?
Barbell Curl (Reverse Grip) is an isolation exercise that primarily targets the brachialis and brachioradialis and also engages the biceps brachii and the wrist extensors on the top of the forearm. It is a beginner-level movement performed standing, curling a straight barbell held in an overhand grip.
Turning the palms down changes how the curl is shared between the elbow flexors. The biceps brachii attaches to the radius and also turns the palm up, so a pronated grip puts it at a disadvantage, and a larger share of the work falls to the brachialis, which attaches to the ulna and flexes the elbow in any grip, and to the brachioradialis. A study of competitive bodybuilders doing cable curls with a straight bar found biceps activity was lower with the palms-down grip than with palms up, and brachioradialis activity was slightly lower too, so the reverse curl is best seen as a lighter curl that shares the load differently rather than a way to isolate one muscle. The wrist extensors work throughout to hold the wrist straight against the bar.
A straight bar locks both hands fully palms-down, which makes this the most pronated version of the movement. The EZ Bar Curl (Reverse Grip) sets the hands on angled sections so they sit slightly less palms-down, and the Dumbbell Reverse Curl lets each hand find its own position.
Reverse curls usually sit in the second half of an arm or pulling session as an accessory, often alongside regular curls, to round out elbow flexor and forearm training. The load is much lighter than on a Barbell Curl, so the focus is strict reps rather than heavy weight.
The movement suits anyone who already curls and wants more work for the brachialis, brachioradialis and forearms. Lifters new to curling should first learn a strict Barbell Curl, and a Dumbbell Hammer Curl with a neutral grip is a useful step between the two.
Muscles Worked
- Brachialis
- Primary
- Brachioradialis
- Primary
- Biceps Brachii
- High
- Extensor Carpi Radialis
- Medium
- Deltoid
- Low
Instructions
- Stand upright holding a barbell with an overhand (pronated) grip, hands about shoulder-width apart.
- Keep your elbows close to your torso and let the bar rest at arm’s length in front of your thighs.
- Set your wrists straight, in line with your forearms, and keep them that way for the whole set.
- Without swinging, curl the bar upward by flexing at the elbows. Keep your upper arms stationary.
- Pause at the top of the movement when your forearms are nearly vertical.
- Slowly lower the bar back to the starting position under control.
- Repeat for the desired number of reps.
Common Mistakes
Using excessive weight
Lifting too heavy compromises form and increases injury risk, especially for wrists and elbows.
Bending the wrists
Letting the knuckles drop or cocking the wrists back shifts strain onto the wrist and forearm tendons and away from the elbow flexors.
Swinging the bar
Using momentum reduces the tension on the target muscles and can lead to poor results.
Letting the elbows drift
Moving the elbows forward or out to the sides brings the shoulders into the lift and takes tension off the elbow flexors.
Neglecting full range of motion
Not fully extending or curling limits muscle activation and development.
Injuries
Barbell Curl (Reverse Grip) is a low risk exercise when performed with proper technique. The load is light compared with most barbell lifts, and the main strain points are the wrists and the outer elbow, where the wrist extensors that hold the wrist straight during the curl attach.
Problems usually come from loading the bar like a regular curl. The palms-down grip is much weaker, so a weight that feels fine on a Barbell Curl can make the wrists buckle and the elbows drift. Start well below your normal curl weight, warm up the forearms with a few light sets, keep the wrists straight and lower the bar under control.
If the fully palms-down straight bar bothers your wrists, the EZ Bar Curl (Reverse Grip) sets the hands at a slight angle and a Dumbbell Reverse Curl lets each hand find its own position, so one of them may sit better. A Dumbbell Hammer Curl trains the same elbow flexors with a neutral grip. To progress, add load in small steps or slow down the lowering phase.
Stop the set if you feel sharp pain at the outer elbow or wrist, or numbness or tingling in the hand. Palm-down gripping and lifting often provokes tennis elbow (lateral epicondylitis), so anyone with that condition should keep the load light or switch to a neutral-grip curl until it settles.
Frequently Asked Questions
- Q: Can I use an EZ bar instead of a straight bar for reverse curls?
Yes. The EZ Bar Curl (Reverse Grip) places the hands on angled sections so they sit slightly less palms-down than on a straight bar, and lifters whose wrists complain on the straight bar often prefer it. Both versions train the same muscles.
- Q: Why can I lift so much less than on a regular barbell curl?
The elbow flexors are much weaker with the palms down. In a lab test of maximal isometric elbow flexion, young men produced about half as much force with the forearm pronated as with it supinated, so start well below your usual curl weight.
- Q: Should I do reverse curls at the start or end of my workout?
They’re often best placed toward the middle or end as an accessory movement.
- Q: How wide should my grip be?
Shoulder-width is ideal, but you can adjust slightly based on comfort and wrist mobility.