The single arm reverse grip cable bicep curl is a unilateral isolation exercise performed at alow pulley station, curling the handle with a pronated (palm-down) grip one arm at a time. Turning the palm down takes the biceps brachii out of its strongest position, so the brachioradialis and brachialis carry the lift and the same load feels heavier than an underhand curl. The cable holds tension at the bottom where a pronated grip is weakest. Lifters use it as an accessory after heavier curling.
What Muscles Does the Single Arm Reverse Grip Cable Bicep Curl Work?
- Primary: Brachioradialis (forearm), brachialis
- Secondary: Biceps brachii, wrist extensors
- Tertiary: Forearm flexors, anterior deltoid (as a stabilizer)
How Do You Set Up for the Single Arm Reverse Grip Cable Bicep Curl?
Attach a single handle to a low pulley and select an appropriate weight. Stand facing the machine with feet shoulder-width apart and a slight bend in the knees. Grasp the handle with a pronated grip (palm facing down), letting your arm hang at your side with a slight forward angle at the elbow and the cable under tension. Keep your upper arm pinned against your torso.
How Do You Perform the Single Arm Reverse Grip Cable Bicep Curl?
- Brace your core and fix your upper arm against your side so it does not shift during the curl
- Curl the handle upward toward your shoulder by flexing at the elbow, keeping the wrist neutral throughout
- Drive the knuckles up at the top of the movement, when the handle reaches shoulder height
- Pause briefly to maximize peak contraction before reversing direction
- Lower the handle back to the starting position under control, resisting the cable the entire way down
- Complete all reps on one arm before switching sides
What Are the Key Form Cues?
- Pin the elbow: Keep the upper arm locked against your torso so the shoulder cannot assist the lift
- Keep the knuckles level: Avoid letting the wrist drop, which hands the lift to the forearm flexors
- Move only the forearm: The upper arm should stay still while the forearm swings up and down
- Control the eccentric: Lower the handle slowly rather than letting the cable pull it down
- Maintain an upright torso: Avoid leaning back to help swing the weight up
What Are the Most Common Mistakes?
- Swinging the upper arm forward: This recruits the front delt and shoulder instead of loading theforearms. Keep the elbow fixed at your side.
- Using body momentum: Rocking the torso to sling the weight up reduces muscle tension. Slow down and use a weight you can control strictly.
- Not fully extending at the bottom: A partial range of motion limits the stretch and reduces overall stimulus. Let the arm straighten fully between reps.
- Letting the wrist drop: The knuckles rolling under during the curl hands the work to the forearm flexors. Keep the back of the hand flat.
- Rushing through reps: Fast, uncontrolled reps reduce time under tension. Slow the tempo, especially on the way down.
What Are the Best Single Arm Reverse Grip Cable Bicep Curl Variations?
- Standing cable curl (both arms): Symmetrical version using a straight bar or rope for higher total load
- Dumbbell reverse grip curl: Free-weight alternative without constant cable tension
- Hammer curl: Neutral-grip variation emphasizing the brachialis and forearms
- Supinated cable curl: Palm-up grip variation putting the biceps brachii back in its strongest position
- High cable curl: Pulley set above shoulder height for a different resistance curve
How Do You Progress the Single Arm Reverse Grip Cable Bicep Curl?
- Increase weight in small increments once you can complete all reps with strict form on both sides
- Add a 1-2 second pause at peak contraction to increase difficulty without adding load
- Slow the eccentric phase to 3-4 seconds to build additional time under tension
- Progress from single sets to supersetting with triceps work for balanced arm development
How Should You Program the Single Arm Reverse Grip Cable Bicep Curl?
Include this exercise in arm or upper-body sessions 1-2 times per week as an isolation finisher after compound pulling movements, using 10-15 reps per arm across 2-3 sets. Rest 45-60 seconds between sets. Working unilaterally makes it well suited for correcting left-right strength differences before returning to bilateral curling movements.