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Pec Deck Fly
A seated machine fly with fixed pads or handles that isolates the pecs through horizontal adduction with almost no stability demand.
ChestMachineHorizontal adduction
GoLightWeight mediapec-deck-fly
Demonstration coming soon
Primary
Pectoralis major
Secondary
Anterior deltoidsSerratus anteriorBiceps
Equipment
Machine
Pattern
Horizontal adduction
Setup
- 01Set the seat so the handles or pads align with mid-chest.
- 02Set the start position so the arms open to a comfortable chest stretch.
- 03Sit with the back and head against the pad and feet flat.
- 04Place forearms on the pads or grip the handles with elbows slightly bent.
Execution
- 01Draw the shoulder blades down and back against the pad.
- 02Squeeze the arms together in a smooth arc until the pads or hands meet.
- 03Hold the peak contraction for a beat and squeeze the pecs hard.
- 04Open back out under control to the stretched start position.
Checkpoints
- -The movement comes from the shoulder joint, not from bending elbows.
- -Back stays flat on the pad the entire set.
- -The stretch position is controlled, never yanked open by the stack.
- -Each rep finishes with a deliberate squeeze.
Common mistakes
- -Loading too heavy and shortening the range to the middle third.
- -Leaning forward off the pad to force the pads together.
- -Letting the shoulders roll forward at peak contraction.
- -Slamming the stack on the eccentric.
Programming notes
- -Use 2 to 4 sets of 10 to 15 reps after pressing work.
- -Great candidate for rest-pause or drop sets since setup is instant.
- -Constant-tension sets with no lockout rest keep the pecs loaded throughout.
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