Lever Seated Side Single-Arm Rear-Delt Fly
Isolate and strengthen your rear deltoids with the Lever Seated Single-Arm Rear-Delt Fly. Build shoulder definition and improve posture.
The Lever Seated Side Single-Arm Rear-Delt Fly mainly works the shoulders, with help from the back and traps. You'll need: cable machine or single handle attachment.

Required Equipment


Lever Seated Side Single-Arm Rear-Delt Fly Muscles Worked
Primary
Rear Shoulder (Delts) (posterior deltoid)
Secondary
Lats (latissimus dorsi); Rhomboids (Shoulder Blade) (rhomboids, major & minor); Mid Traps (trapezius, middle fibers)
Lever Seated Side Single-Arm Rear-Delt Fly Variations and Alternatives
How to do the Lever Seated Side Single-Arm Rear-Delt Fly
Lever Side Seated Single Arm Rear Delt Fly Instructions
Starting Position
Adjust the machine: Set the seat height so that when seated, your arms can reach the handle comfortably at shoulder height.
Sit down: Take a seat on the machine, ensuring that your back is against the support pad.
Positioning your body: Lean slightly forward and grasp the handle with one hand (the opposite hand can rest on your knee for support). Your legs should be slightly bent, and your feet flat on the floor.
Movement
Initiate the movement: Keeping your elbow slightly bent, pull the handle out to the side, leading with your elbow. Aim to keep your upper arm parallel to the floor while moving.
Focus on the rear deltoid: As you pull, squeeze your shoulder blades together and feel the contraction in your rear deltoid. Avoid using momentum—focus on controlled movement.
Return to starting position: Slowly lower the handle back to the starting position, maintaining control throughout. Do not let the weight stack touch down to maximize muscle engagement.
Repetitions
Perform 10-15 repetitions on one arm before switching to the other arm. Aim for 3 sets total.
Tips
Keep your core engaged and maintain good posture throughout the exercise.
Avoid arching your back or using your lower body to assist in the movement.
Start with a lighter weight to master the form before increasing the resistance.
Lever Seated Side Single-Arm Rear-Delt Fly FAQs
What muscles does the Lever Seated Side Single-Arm Rear-Delt Fly work?
The Lever Seated Side Single-Arm Rear-Delt Fly mainly works the shoulders, with help from the back and traps. The main muscles are the posterior deltoid.
What equipment do you need for the Lever Seated Side Single-Arm Rear-Delt Fly?
Cable machine or single handle attachment.
What workout day should the Lever Seated Side Single-Arm Rear-Delt Fly go on?
It belongs on pull day in a push/pull/legs routine.
What are some Lever Seated Side Single-Arm Rear-Delt Fly variations and alternatives?
Similar exercises include the Bodyweight Bent-Over Rear-Delt Fly, Cable Incline Rear-Delt Fly with Supported Back, Cable High-Pulley Single-Arm Rear-Delt Fly and Cable Rear Drive.
Training calculators
Work out the numbers behind your training before your next session.





