Primary Goal
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When to use it
Use Assisted One-Arm Pull-Ups to develop high-force unilateral pulling strength without requiring a full unsupported one-arm pull-up.
- During strength-focused training phases
- After board climbing, provided sufficient pulling strength remains
- As part of a gym strength and conditioning session
- When unilateral pulling strength is an identified limitation
This is a demanding strength exercise. Avoid placing it immediately before priority limit bouldering or projecting sessions.
Preparation
Warm up the shoulders, scapular muscles, and elbow flexors with progressively harder pulling movements.
Begin with controlled two-arm pull-ups, followed by a few easy assisted one-arm repetitions. Gradually reduce assistance until you reach the intended working intensity.
If performed after climbing, a short, specific pulling warm-up may be sufficient, provided the shoulders and elbows are already prepared.
Starting position
- Grip a stable pull-up bar with the working hand.
- Hold a support strap, rope, or suitable resistance band with the opposite hand.
- Begin with the working arm extended in a comfortable overhead position.
- Maintain controlled shoulder positioning without excessive shrugging or passive hanging.
- Engage the trunk to minimize swinging and unwanted body rotation.
- Adjust the supporting hand position to provide an appropriate level of assistance.
Execution
- Initiate the pull smoothly through the working arm.
- Use the opposite hand to provide only enough assistance to complete the movement with good control.
- Pull through a comfortable range of motion, aiming to bring the chin toward bar height.
- Maintain stable shoulder and trunk positioning throughout the movement.
- Lower under control without dropping abruptly into the bottom position.
- Complete 2–4 repetitions, then switch arms.
- Repeat for the prescribed number of sets per arm.
Keep the assistance reasonably consistent within each set. The working arm should produce most of the pulling force.
Dosage
- 3 sets per arm
- 2–4 repetitions per set
- RPE 7–9/10
- Approximately 2 minutes of recovery before repeating the same arm
- Alternate arms between sets
Begin around RPE 7–8/10. Reserve RPE 9 for athletes already accustomed to demanding unilateral pulling exercises.
Progression
Progress by gradually reducing assistance while maintaining controlled repetitions and consistent range of motion.
- Begin with 3 × 2 repetitions per arm at a manageable assistance level.
- Gradually increase to 3 × 4 clean repetitions per arm.
- Reduce assistance slightly, then return to 2 repetitions per set.
- Repeat the progression while preserving shoulder and elbow control.
Prioritize increasing the contribution of the working arm rather than adding unnecessary training volume.
Important
- Unilateral pulling places substantial demands on the elbow flexors, shoulders, and associated tendons.
- Use sufficient assistance to maintain controlled movement without pain.
- Avoid sudden loading, swinging, or forcing the bottom position.
- Stop when technique deteriorates or substantially more assistance is needed.
- Allow sufficient recovery after demanding board climbing or other high-intensity pulling sessions.
Expected effects
- Increased unilateral pulling strength
- Improved elbow flexor force production
- Greater shoulder and scapular control under unilateral loading
- Improved coordination during demanding single-arm pulling movements
- Progressively reduced reliance on assistance
- Potential improvement in climbing movements requiring strong unilateral pulling