Dumbbell Side Plank With Rear Fly
Dumbbell Side Plank With Rear Fly Exercise Description
The Dumbbell Side Plank with Rear Fly blends an anti-lateral flexion side plank with a single‑arm reverse fly. It challenges the lateral core to resist sagging and rotation while the shoulder moves through horizontal abduction with controlled scapular retraction. Primary muscles include the external/internal obliques, quadratus lumborum, and gluteus medius on the bottom hip, plus the posterior deltoid, middle trapezius, and rhomboids in the moving arm. The rotator cuff and lower trapezius assist with shoulder and scapular stability throughout. Emphasis is on alignment and smooth control rather than load or speed. Keep a neutral spine and stacked ribs, breathe steadily, and avoid opening the chest toward the ceiling. If needed, reduce the lever by placing the bottom knee down or practice the arm motion without weight until control is consistent.
- Muscle Groups: Abs, Back, Core, Delts, Glutes, Hips, Obliques, Shoulders, Traps, Waist
- Target Muscles: Deltoid - Posterior, External Obliques, Gluteus Medius, Internal Obliques, Quadratus Lumborum, Rhomboid Major, Rhomboid Minor, Trapezius - Middle Fibers
- Assisting Muscles: Gluteus Minimus, Tensor Fasciae Latae
- Stabilizing Muscles: Infraspinatus, Subscapularis, Supraspinatus, Teres Minor, Trapezius - Lower Fibers
- Body Area: Lower Body, Upper Body
- Body Parts: Back, Core, Hips, Legs, Lower Back, Mid Back, Shoulders, Torso, Upper Back, Upper Legs
- Body Surface: Back, Side
- Body Symmetry: Unilateral
- Equipment: Dumbbell
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Hip Abductors, Hip Extensors, Scapular Retractors, Shoulder Extensors, Spine Stabilizers, Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Multi-joint
- Muscle Location: Deep Side Abs, Mid Traps, Rear Shoulder, Side Abs, Side Lower Back, Upper Back, Upper Glutes
- Movement Direction: Other
- Muscle Position: Lateral, Posterior
- Gender: Male
How To Do The Dumbbell Side Plank With Rear Fly Exercise
‘- Set up on your left forearm, elbow directly under the shoulder; feet stacked.
– Form a straight line from head to heels; brace the abdomen and lightly squeeze the glutes.
– Keep ribs stacked over pelvis; neck long; gaze forward.
– Hold a light dumbbell in the right hand, arm hanging below the shoulder with a slight elbow bend, neutral or thumb‑up grip.
– Gently retract and depress the right scapula (no shrugging) to “pack” the shoulder.
– Exhale as you raise the arm in an arc to shoulder height, moving through horizontal abduction.
– Keep hips lifted and square; do not rotate or let the pelvis drop.
– Pause briefly with the hand in line with the shoulder; maintain neutral wrist.
– Inhale as you lower the arm along the same path with control—no swinging.
– Repeat the same pattern, then switch sides and mirror the setup.
– Options: perform from the bottom knee or omit the dumbbell to master alignment.
Dumbbell Side Plank With Rear Fly Tips
‘- Set your forearm so the elbow is directly under the shoulder to establish a solid base.
– Stack your feet and create a straight line from head to heels before you start moving the arm.
– Brace the abdomen and lightly squeeze the glutes to help keep a neutral spine.
– Keep ribs stacked over the pelvis and avoid opening the chest toward the ceiling to limit rotation.
– Let the working arm hang below the shoulder with a slight elbow bend and neutral or thumb‑up grip.
– Gently retract and depress the working scapula to “pack” the shoulder and avoid shrugging.
– Exhale as you raise the arm in an arc to shoulder height; inhale as you lower it along the same path.
– Keep hips lifted and square; do not let the pelvis sag or rotate while the arm moves.
– Pause briefly with the hand in line with the shoulder and maintain a neutral wrist at the top.
– If control is inconsistent, place the bottom knee down or perform the motion without a dumbbell.
Dumbbell Side Plank With Rear Fly Beginner Introduction
The Dumbbell Side Plank with Rear Fly is a combo core-and-shoulder exercise that links a held side plank position with a controlled lifting motion using a light dumbbell. While the body is supported on one forearm and the side of the lower body, the upper arm moves out and back against gravity in a smooth arc. This creates constant work for the side abs, side of the lower back, and upper glutes on the supporting side, while the moving arm trains the rear shoulder and upper back to guide and steady the weight.
Because the trunk must remain steady as the arm travels, the movement highlights body alignment, breathing rhythm, and careful tempo rather than heavy loading or fast repetitions. The shoulder and upper-back stabilizers stay active to keep the upper body from tipping or twisting as the dumbbell moves. For those building confidence with the pattern, common variations include a shortened base of support with the lower leg resting on the floor, or performing the same arm path without any weight to refine balance and control before progressing.