Dumbbell Lying One Arm Supinated Triceps Extension
Dumbbell Lying One Arm Supinated Triceps Extension Exercise Description
The Dumbbell Lying One Arm Supinated Triceps Extension isolates the triceps brachii by emphasizing pure elbow extension while you lie on a flat bench. Using a supinated grip (palm facing your head/ceiling) places the forearm in supination; the triceps remain the prime mover, with the wrist/forearm muscles and shoulder stabilizers maintaining control. Keeping the upper arm relatively stationary minimizes shoulder motion and focuses tension through the elbow joint’s flexion–extension arc. Scapular retraction and depression help create a stable base on the bench and support consistent elbow tracking. This single‑arm setup allows precise control of elbow path and range of motion, encouraging even technique from side to side. Prioritize smooth, controlled movement and a neutral wrist throughout to protect the joints and keep the load on the triceps.
- Muscle Groups: Triceps
- Target Muscles: Triceps Brachii - Long Head
- Assisting Muscles: Triceps Brachii - Lateral Head
- Stabilizing Muscles: Infraspinatus, Rhomboid Major, Subscapularis, Trapezius - Lower Fibers, Trapezius - Middle Fibers
- Body Area: Upper Body
- Body Parts: Arms, Upper Arms
- Body Surface: Back
- Body Symmetry: Unilateral
- Equipment: Dumbbell
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Elbow Extensors
- Joint Involvement: Single-joint
- Muscle Location: Inner Tricep
- Movement Direction: Other
- Muscle Position: Posterior
- Gender: Female
How To Do The Dumbbell Lying One Arm Supinated Triceps Extension Exercise
‘- Lie supine on a flat bench; feet flat, ribs down, neutral spine. Retract and depress your shoulder blades.
– Hold one dumbbell with a supinated grip (palm toward your head/ceiling), wrist neutral, thumb wrapped.
– Start with the working arm straight above the shoulder; elbow points to the ceiling. Keep the upper arm near vertical (slightly angled toward your head is acceptable).
– Brace gently. Without moving the upper arm, bend the elbow to lower the dumbbell in an arc toward the outside of your temple/ear.
– Keep the elbow close to midline (avoid flaring); maintain scapular set and a neutral wrist.
– Lower to a comfortable, pain‑free depth with control, then extend the elbow to return to the start without forcefully locking out.
– Breathe steadily and keep the motion smooth—no swinging or pressing from the shoulder.
– Use your free hand to assist getting the dumbbell into and out of position safely before switching sides.
Dumbbell Lying One Arm Supinated Triceps Extension Tips
‘- Lie with feet flat, ribs down, neutral spine, and shoulder blades retracted and depressed to create a stable base.
– Grip the dumbbell supinated with your thumb wrapped and wrist neutral to maintain control.
– Start with the working arm straight above your shoulder, elbow pointing to the ceiling, upper arm near vertical (slightly toward your head is acceptable).
– Keep the upper arm relatively stationary and focus on bending and extending only at the elbow.
– Lower the dumbbell in a controlled arc toward the outside of your temple/ear.
– Keep the elbow close to your midline and avoid letting it flare out.
– Maintain scapular retraction/depression and a neutral wrist throughout the movement.
– Lower only to a comfortable, pain-free depth, then extend the elbow to return without forcefully locking out.
– Breathe steadily and move smoothly, avoiding any swinging or pressing from the shoulder.
– Use your free hand to help get the dumbbell into and out of position before switching sides.
Dumbbell Lying One Arm Supinated Triceps Extension Beginner Introduction
The Dumbbell Lying One Arm Supinated Triceps Extension is a single‑arm dumbbell move performed on a flat bench that centers almost entirely on bending and straightening the elbow. With the palm rotated to face upward, the back of the upper arm does the main work while the forearm muscles and small muscles around the shoulder assist by steadying the weight. The lifter lies on the bench with the working arm reaching toward the ceiling, letting the elbow act like a hinge so the weight travels in a smooth arc beside the head.
Throughout the exercise, the shoulder blades are drawn gently down and into the bench, creating a firm platform that allows the elbow to move in a consistent path. The non‑working hand can guide the dumbbell into and out of position, which is especially helpful when handling heavier loads. The motion is generally unhurried and controlled, with the hand kept in line with the forearm to limit unnecessary strain on the wrist and elbow. Training one side at a time in this way can highlight differences between arms and support more balanced triceps development.