Shoulders Exercise · Leverage Machine

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Lever Seated Reverse Fly

Category

Shoulders

Equipment

Leverage Machine

Target

Delts

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Biomechanical cues verified by the PlanWorkouts Science Review Board under CSCS editorial oversight; see our editorial standards.

The seated reverse fly targets the rear delts and upper back through horizontal abduction, a movement direction most pressing-focused programs neglect entirely. Weak rear delts are a common culprit behind rounded-forward shoulder posture, which makes this an easy fix to add.

How to Do the Lever Seated Reverse Fly

1. Set the seat height and position yourself on the machine with your chest against the pad and your feet flat on the floor.
2. Grasp the handles with an overhand grip and keep your arms slightly bent.
3. Exhale and squeeze your shoulder blades together as you pull the handles back and outward, away from your body.
4. Pause briefly at the peak contraction, then inhale and slowly return to the starting position.
5. Repeat for your target rep goal, keeping your core engaged and avoiding any reliance on momentum.

Biomechanical & Joint Load Cues

Single-joint horizontal adduction isolating the sternal and clavicular pectoralis fibers without triceps tricep fatigue limiting set termination.

Common Mechanical Mistakes & Form Errors to Avoid

• Bending Elbows into a Press: Excessively bending elbows into 90 degrees during flyes turns the movement into a press, recruiting triceps instead of isolating pectorals.
• Overstretching the Shoulder Capsule: Dropping arms too far behind the torso plane strains the anterior capsule without adding meaningful pec activation.
• Rushing the Converging Squeeze: Failing to pause briefly at peak contraction in front of the chest misses the maximal short-muscle fiber recruitment.

Proper Breathing Patterns & Core Engagement

Inhale as arms open into full chest stretch; exhale as hands converge in front of the chest.

Injury Modification & Joint Safety

Do not overstretch past comfortable range in the bottom position if you have a history of anterior shoulder subluxation or AC joint sprain. If joint irritation persists, immediately stop and substitute this movement with another exercise from the Shoulders exercises category.

Muscles Worked

The Lever Seated Reverse Fly primarily targets the Delts, with Trapezius as the primary synergist muscle group, along with the Rhomboids.

More Shoulders Exercises

Band Front Lateral Raise Band · Delts Band Front Raise Band · Delts Band Reverse Fly Band · Delts Band Shoulder Press Band · Delts Band Standing Rear Delt Row Band · Delts Band Twisting Overhead Press Band · Delts

More Delts Exercises

Band Y-Raise Band · Delts Barbell Front Raise Barbell · Delts Barbell One Arm Snatch Barbell · Delts Barbell Rear Delt Raise Barbell · Delts Barbell Rear Delt Row Barbell · Delts Barbell Seated Behind Head Military Press Barbell · Delts

Equipment Alternatives

Don't have leverage machine? These target the same delts with different equipment.

Left Hook. Boxing Body Weight · Delts Band Y-Raise Band · Delts Barbell Front Raise Barbell · Delts Battling Ropes Rope · Delts

FAQ

What muscles does the Lever Seated Reverse Fly work?

The Lever Seated Reverse Fly primarily targets the delts as the primary agonist. Synergist assistance is provided by the trapezius along with the rhomboids. Maintaining strict biomechanical alignment ensures maximal tension remains focused on the intended muscle fibers rather than shifting to surrounding stabilizer joints.

What equipment do I need for the Lever Seated Reverse Fly?

The Lever Seated Reverse Fly is performed using a leverage machine. Ensure all equipment is securely positioned with collars or safety pins locked before loading working sets. If you train in a home gym or minimal setup, explore our equipment-free and resistance band alternatives below.

What is the most common form mistake on the Lever Seated Reverse Fly?

The most frequent error is bending elbows into a press: Excessively bending elbows into 90 degrees during flyes turns the movement into a press, recruiting triceps instead of isolating pectorals.. Controlling the 2 to 3-second eccentric lowering phase ensures maximal hypertrophic stimulus while shielding connective tissue.

How many sets and reps should I perform on the Lever Seated Reverse Fly?

For muscle growth and density, execute 3 to 4 working sets of 10 to 15 controlled repetitions with 60 seconds rest, emphasizing a deep stretch and deliberate peak contraction on every rep.

What's a good alternative to the Lever Seated Reverse Fly?

If you don't have access to a leverage machine, the Left Hook. Boxing targets the same delts using body weight instead. This alternative replicates the same joint angle and movement plane while allowing you to train effectively with different available gear. You can also substitute it seamlessly in our free Workout Plan Builder.