Exercise guide
Lever Single Arm Preacher Curl Plate Loaded
- Beginner
- Isolation
- Rep-based
- Upper arms
This exercise provides extreme isolation of the biceps by using a preacher pad to eliminate momentum and a leverage arm for consistent resistance. It is particularly effective for targeting the short head of the biceps and improving peak contraction through a fixed range of motion.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Adjust the seat height so your armpit sits snugly against the top of the preacher pad.
- Load the machine with weight plates and sit with your feet firmly on the floor for stability.
- Grasp the handle with an underhand (supinated) grip using one arm.
- Align your elbow directly with the machine's pivot point and rest your chest firmly against the pad.
How to do it
- Exhale and curl the handle toward your shoulder by forcefully contracting the bicep.
- Squeeze the bicep at the top of the movement for a one-second peak contraction.
- Inhale and slowly lower the weight over a 3-second tempo until your arm is nearly straight.
- Complete all repetitions on one side before switching to the other arm to ensure equal volume.
Form checklist
- Keep your upper arm and elbow in constant contact with the pad.
- Maintain a neutral spine and avoid leaning your torso back to gain momentum.
- Keep your wrist straight or slightly curled inward; do not let it bend backward.
- Stop the descent just before full elbow lockout to maintain tension on the muscle.
Pro tips
- Focus on driving your pinky finger toward your shoulder to maximize bicep supination and peak height.
- Use your non-working hand to grip the side of the bench to stabilize your torso and prevent shoulder rotation.
Make it harder
- Perform 'slow eccentrics' by taking 5 seconds to lower the weight on every rep.
- Add a 2-second isometric hold at the mid-point of the repetition where the leverage is heaviest.
Frequently asked
- What muscles does the lever single arm preacher curl plate loaded work?
- The lever single arm preacher curl plate loaded primarily targets the biceps, and also works the forearms as secondary muscles.
- What equipment do you need for the lever single arm preacher curl plate loaded?
- The lever single arm preacher curl plate loaded uses leverage machine.
- Is the lever single arm preacher curl plate loaded good for beginners?
- Yes. The lever single arm preacher curl plate loaded is a beginner-friendly movement and a strong foundation to build on.