Dumbbell Lying One Arm Press
Dumbbell Lying One Arm Press Exercise Description
The Dumbbell Lying One Arm Press is a unilateral horizontal pressing exercise performed supine on a stable surface (bench or floor). It primarily targets the pectoralis major, with significant assistance from the anterior deltoid and triceps brachii. Using a single dumbbell increases the body’s anti-rotation demand, requiring the trunk and scapular stabilizers to keep the torso square and the shoulder centered. Compared with a bar, the dumbbell allows a neutral wrist and a natural press path while you maintain a packed shoulder (scapular retraction and slight depression). Keep a neutral spine, steady foot contact with the floor, and a controlled range of motion that does not compromise shoulder position; on the floor, the range ends when the upper arm contacts the ground.
- Muscle Groups: Chest, Pecs
- Target Muscles: Pectoralis Major - Sternal Head
- Assisting Muscles: Deltoid - Anterior, Triceps Brachii - Lateral Head
- Stabilizing Muscles: External Obliques, Internal Obliques, Quadratus Lumborum, Trapezius - Lower Fibers, Trapezius - Middle Fibers
- Body Area: Upper Body
- Body Parts: Chest
- Body Surface: Front
- Body Symmetry: Unilateral
- Equipment: Dumbbell
- Exercise Patterns: Push
- Exercise Type: Strength
- Functional Grouping: Horizontal Shoulder Adduction
- Joint Involvement: Multi-joint
- Muscle Location: Mid Chest
- Movement Direction: Vertical
- Muscle Position: Anterior
- Gender: Male
How To Do The Dumbbell Lying One Arm Press Exercise
‘- Lie supine on a stable flat surface with feet planted and ribs stacked over pelvis; maintain a neutral spine and steady glute/upper-back contact.
– Hold one dumbbell with a full, neutral wrist grip. Set the shoulder by gently retracting and slightly depressing the scapula.
– Start with the dumbbell stacked over the shoulder, elbow extended but not locked; non-working arm stabilizes on your torso or the surface.
– Inhale and brace. Lower the weight beside the chest with the upper arm about 30–60° from the torso, forearm vertical, and shoulder blades anchored.
– Stop when the dumbbell is level with the chest (or when the triceps touch the floor if lying on the floor) without losing shoulder position.
– Press the dumbbell upward by extending the elbow and horizontally adducting the shoulder, finishing stacked over the shoulder joint.
– Throughout, keep the torso square (no rolling or arching), avoid shoulder shrugging, and control both the descent and the lockout.
Dumbbell Lying One Arm Press Tips
‘- Keep feet planted and maintain steady glute and upper-back contact with the bench or floor.
– Stack your ribs over your pelvis and maintain a neutral spine throughout the lift.
– Use a full grip with a neutral wrist to keep the dumbbell aligned and stable.
– Gently retract and slightly depress your scapula to keep the shoulder packed and centered.
– Start with the dumbbell stacked directly over your shoulder, with the elbow extended but not locked.
– Let the non-working arm rest on your torso or the surface to help stabilize your body.
– Inhale and brace before lowering the dumbbell beside your chest.
– Keep your upper arm about 30–60° from your torso and your forearm vertical as you lower.
– Stop the descent when the dumbbell is level with your chest (or triceps touch the floor) without losing shoulder position.
– Press back up so the dumbbell finishes stacked over the shoulder, keeping your torso square, avoiding shrugging, and controlling both the down and up phases.
Dumbbell Lying One Arm Press Beginner Introduction
The Dumbbell Lying One Arm Press is a single‑arm chest press done while lying on a flat bench or on the floor. It mainly challenges the chest, with strong involvement from the front of the shoulders and the back of the upper arm. Because only one dumbbell is used at a time, the core and upper back work hard to resist twisting, and the muscles around the shoulder blade contribute to keeping the shoulder joint centered and supported.
During each repetition, the weight moves in a smooth path from above the shoulder down toward the side of the chest, then back up again. The wrist remains in a straight, comfortable line with the forearm, allowing a natural pressing arc. One arm drives the weight while the other rests on the torso or surface for added balance. The body stays grounded through the feet, hips, and upper back, turning the movement into a full‑body stability challenge as well as a pressing exercise. When performed on the floor, the motion typically ends as the upper arm gently meets the ground, which naturally limits how far the elbow can travel.