Open Exercise

Development draft, v0. Formats and IDs may change.

Catalogue

Decline Dumbbell Fly

oec:decline-dumbbell-fly

An isolation exercise targeting the lower pectoralis major by performing wide arm arcs with dumbbells on a decline bench.

Generated by gemini-3.8-flash from the sources below. No person has checked this record. Don't rely on it for safety.

Also called: Decline Dumbbell Chest Fly, Fly With Dumbbells, Decline Bench, Decline DB Fly

How to do it

Setup

  1. Set an adjustable bench to a 15 to 30-degree decline and secure your legs under the ankle pads.
  2. Grasp a dumbbell in each hand using a neutral grip (palms facing each other) and lie back on the bench.
  3. Press the dumbbells directly over your chest, maintaining a slight, fixed bend in your elbows.

Movement

  1. Lower the dumbbells outward to your sides in a wide, controlled arc, keeping the elbow angle fixed throughout.
  2. Descend until you feel a gentle stretch across your lower chest and shoulders.
  3. Engage your pectorals to reverse the motion along the same wide path until the weights return above your chest.

Breathing

Inhale smoothly as you lower the dumbbells to open the chest; exhale as you bring the dumbbells back together at the top.

Cues

  • Hug a wide barrel
  • Keep elbows slightly bent and locked
  • Squeeze the chest at the top

Common faults

Turning the fly into a press by excessively bending and extending the elbows.
Lock a slight bend in your elbows from start to finish and move solely from the shoulder joint.
Overstretching the shoulders at the bottom.
Limit the depth of the descent so your elbows do not drop excessively below bench level.

Safety

  • Use moderate loads to prevent anterior shoulder strain.
  • Ensure your shins and ankles are firmly locked into the decline bench pads before lifting the weights.

Muscles

  • Pectoralis major, abdominal head prime mover
  • Pectoralis major, sternal head prime mover
  • Front deltoid synergist
  • Biceps brachii stabilizer
  • Serratus anterior stabilizer

Joints

  • Shoulder: Horizontal adduction, Horizontal abduction
  • Shoulder blade: Protraction, Retraction
  • Elbow: Isometric stabilization

Details

Movement
Chest fly isolation
Modality
Hypertrophy, Strength
Mechanics
isolation
Force
push
Laterality
bilateral
Kinetic chain
open
Level
intermediate
Equipment
Dumbbell; Adjustable bench or Flat bench
Record
Repetitions and Load
Load
external, per implement

Related

Sources

This record: CC-BY-SA-4.0.

Data

decline-dumbbell-fly.json