Upper Arms Exercise · Cable

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Cable Rope One Arm Hammer Preacher Curl

Combining a rope grip with a one-arm hammer curl on a preacher bench isolates the brachialis and forearm on each side independently, exposing any imbalance a two-arm version would hide. The preacher pad locks the upper arm still, so there's no swinging to finish a stalling rep. It's a slow, deliberate exercise better suited to higher reps and lighter loads than heavy singles.

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Category

Upper Arms

Equipment

Cable

Target

Biceps

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Exercise reference published by PlanWorkouts; see our editorial standards.

How to Do the Cable Rope One Arm Hammer Preacher Curl

1. Attach a rope handle to a low pulley cable machine.
2. Stand facing the machine with your feet shoulder-width apart.
3. Grip the rope handle with an underhand grip, palms facing up.
4. Position your upper arm against the preacher bench pad, keeping your elbow slightly bent.
5. Keep your back straight and your core braced throughout the exercise.
6. Slowly curl the rope handle toward your shoulder, keeping your upper arm stationary.
7. Squeeze your biceps at the top of the movement, then slowly lower the rope handle back to the starting position.
8. Repeat for the desired number of repetitions, then switch arms.

Technique & Form Tips

Perform flexion at the elbow while keeping your setup steady and supported. Maintain the specific elbow placement demonstrated for your chosen variation, such as preacher, incline, or hammer curl, to ensure consistent mechanical load through the arc.

Common Mistakes to Avoid

• Using hip momentum: Keep your torso stable to prevent swinging the load upward with your lower body.
• Drifting elbows: Maintain the elbow position relative to your body as defined by your specific curl variant.
• Lack of eccentric control: Lower the weight under control rather than letting it fall.

How to Breathe During This Exercise

Breathe steadily throughout the movement, ideally exhaling during the contraction phase.

Comfort and Control

Choose a load and range you can control. Stop if the movement causes pain. If discomfort persists, stop and ask a qualified professional about an appropriate exercise and range.

General guidance: Mayo Clinic on weight-training technique. Follow the specific movement steps above for this variation.

Muscles Worked

The Cable Rope One Arm Hammer Preacher Curl mainly targets your Biceps, with your Forearms helping support the movement.

More Upper Arms Exercises

Assisted Standing Triceps Extension (with Towel) Assisted · Triceps Assisted Triceps Dip (kneeling) Leverage Machine · Triceps Band Alternating Biceps Curl Band · Biceps Band Close-Grip Push-Up Band · Triceps Band Concentration Curl Band · Biceps Band One Arm Overhead Biceps Curl Band · Biceps

More Biceps Exercises

Barbell Alternate Biceps Curl Barbell · Biceps Barbell Biceps Curl (with Arm Blaster) Barbell · Biceps Barbell Curl Barbell · Biceps Barbell Drag Curl Barbell · Biceps Barbell Lying Preacher Curl Barbell · Biceps Barbell Preacher Curl Barbell · Biceps

Equipment Alternatives

Don't have cable? These target the same biceps with different equipment.

Biceps Leg Concentration Curl Body Weight · Biceps Barbell Alternate Biceps Curl Barbell · Biceps Dumbbell Alternate Biceps Curl Dumbbell · Biceps EZ Bar Seated Close Grip Concentration Curl EZ Barbell · Biceps

FAQ

What muscles does the Cable Rope One Arm Hammer Preacher Curl work?

The Cable Rope One Arm Hammer Preacher Curl mainly works your biceps. Your forearms also works to help support and steady your body. Using good, smooth form makes sure you work the right muscles and avoid unnecessary strain on your joints.

What equipment do I need for the Cable Rope One Arm Hammer Preacher Curl?

You do the Cable Rope One Arm Hammer Preacher Curl with a cable. Make sure your equipment is set up safely before starting. If you work out at home or have limited gear, check out our alternative exercises below.

What form mistake should I watch for on the Cable Rope One Arm Hammer Preacher Curl?

One mistake to watch for is using hip momentum: Keep your torso stable to prevent swinging the load upward with your lower body.. Use a comfortable range and a controlled return; reduce the load if you cannot maintain the demonstrated setup.

How many sets and reps should I perform on the Cable Rope One Arm Hammer Preacher Curl?

To tone and grow muscle, do 3 to 4 sets of 10 to 15 smooth reps with 60 seconds of rest, focusing on a full stretch and squeezing the muscle at the top of each rep.

What's a good alternative to the Cable Rope One Arm Hammer Preacher Curl?

The Biceps Leg Concentration Curl trains your biceps with body weight and a similar movement pattern. Review its form guide before substituting it, since setup and range of motion can differ.