Open Exercise

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Catalogue

Dumbbell Lying Triceps Extension

oec:dumbbell-lying-triceps-extension

A supine isolation exercise using dumbbells to build the triceps via elbow extension.

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: Dumbbell Skull Crusher, Lying Dumbbell Triceps Extension, French Press Dumbbells, Dumbbell French Press, Skullcrusher Dumbbells

How to do it

Setup

  1. Sit on a flat bench with a pair of dumbbells resting vertically on your thighs.
  2. Lie back onto the bench, bringing the dumbbells directly over your chest with arms extended.
  3. Turn your palms inward to face each other in a neutral grip.
  4. Angle your upper arms back slightly (about 10 to 20 degrees past vertical toward your head) to keep constant tension on the triceps.

Movement

  1. Inhale and hinge solely at the elbows, lowering the dumbbells under control toward either side of your head or slightly behind your ears.
  2. Descend until your forearms pass parallel to the floor and you feel a full stretch in your triceps.
  3. Exhale and extend your elbows to press the weights back up to the starting position without letting your upper arms drift forward.

Breathing

Inhale as you lower the weights past your temples, and exhale forcefully as you extend your elbows to return to the top.

Cues

  • Keep upper arms pinned in space.
  • Elbows track straight, don't flare them out.
  • Control the descent to protect your joints.

Common faults

Flaring the elbows outward during the movement.
Keep elbows tucked in line with your shoulders to maximize triceps recruitment and reduce shoulder strain.
Swinging the upper arms back and forth to gain momentum.
Lock your humerus at a slight backward incline and ensure movement occurs exclusively at the elbow joint.
Dropping the weights rapidly toward the face or ears.
Maintain a strict, controlled eccentric phase of at least two seconds.

Safety

  • Ensure a secure grip to prevent dropping the dumbbells near your face.
  • If experiencing elbow discomfort, angle the upper arms slightly further back or reduce the load.

Muscles

  • Triceps, lateral head prime mover
  • Triceps, long head prime mover
  • Triceps, medial head prime mover
  • Anconeus synergist
  • Front deltoid stabilizer
  • Wrist and finger flexors stabilizer

Joints

  • Elbow: Flexion, Extension
  • Shoulder: Isometric stabilization
  • Wrist: Isometric stabilization

Details

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

Related

Sources

This record: CC-BY-SA-4.0.

Data

dumbbell-lying-triceps-extension.json