What is the difference between cable rear delt fly and reverse pec deck?

Cable rear delt fly allows for a more natural movement path and requires greater stabilization compared to the fixed arc of the reverse pec deck. Both effectively target the rear delts, but cables offer more freedom to adjust the angle and hand position.

Should I cross the cables at the top or bottom of the movement?

Cross the cables at the starting position in front of your body, then pull them apart to the sides. This crossed starting position pre-stretches the rear delts and allows for a fuller range of motion.

How far forward should I lean during cable rear delt fly?

Lean forward approximately 20 to 30 degrees from vertical with a neutral spine to optimize rear delt engagement. Leaning too far forward can compromise stability, while standing too upright shifts emphasis to the lateral delts.

Rear Delt Fly (Cable)

The rear delt fly (cable) is a shoulder isolation exercise that uses crossed cables to target the posterior deltoids through horizontal abduction. It suits lifters looking to develop rear delt size and balance out pressing-dominant shoulder development.

Muscle group: Shoulders
Primary muscles: deltoids
Equipment: Cable

How to do the Rear Delt Fly (Cable)

Set both cable pulleys to shoulder height and attach D-handles or single grip attachments.
Stand centered between the cables, grasp the left handle with your right hand and the right handle with your left hand so the cables cross in front of you.
Step back to create tension, position your feet shoulder-width apart, and hinge forward slightly at the hips with a neutral spine.
Pull both handles outward in a wide arc until your arms are extended out to your sides and you feel a strong contraction in your rear delts.
Control the handles back to the starting position, maintaining the cross in front of your body.

Form tips

Keep a slight bend in your elbows throughout the movement rather than locking them out to maintain tension on the rear delts.
Focus on pulling your elbows back and out rather than using your hands to prevent the mid-back from taking over.
Maintain a stable torso position without rotating or using momentum to swing the weight.

Common mistakes

Pulling the cables too far behind the body shifts emphasis away from the rear delts and engages the rhomboids and mid-traps excessively.
Standing too upright reduces rear delt activation and allows the lateral delts to dominate the movement.
Using too much weight forces compensation through body English and prevents proper isolation of the target muscle.

Sets and reps

For hypertrophy, perform 3 to 4 sets of 10 to 15 reps with moderate weight and controlled tempo; for strength-endurance, use 3 sets of 8 to 12 reps with slightly heavier resistance.

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Frequently asked questions

What is the difference between cable rear delt fly and reverse pec deck?: Cable rear delt fly allows for a more natural movement path and requires greater stabilization compared to the fixed arc of the reverse pec deck. Both effectively target the rear delts, but cables offer more freedom to adjust the angle and hand position.
Should I cross the cables at the top or bottom of the movement?: Cross the cables at the starting position in front of your body, then pull them apart to the sides. This crossed starting position pre-stretches the rear delts and allows for a fuller range of motion.
How far forward should I lean during cable rear delt fly?: Lean forward approximately 20 to 30 degrees from vertical with a neutral spine to optimize rear delt engagement. Leaning too far forward can compromise stability, while standing too upright shifts emphasis to the lateral delts.

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