Dumbbell Incline One Arm Fly on Exercise Ball
- Zielmuskel
- Pectoralis Major Clavicular Head
- Synergistenmuskeln
- Biceps Brachii, Deltoid Anterior
- Equipment
- Dumbbell
- Körperregion
- Chest
- Typ
- Strength
The dumbbell incline one arm fly on an exercise ball is a single-arm chest isolation exercise that targets the upper, clavicular-head fibers of the pectoralis major, with help from the front shoulders (deltoid anterior) and biceps. Working one arm at a time on an unstable ball forces your core and supporting shoulder to stabilize, evening out left-right strength while stretching and squeezing the upper chest.
Dumbbell Incline One Arm Fly on Exercise Ball: So führst du sie aus
- 1Hold a single dumbbell and sit on the exercise ball, then walk your feet forward until your upper back and shoulders rest on the ball and your torso sits at a slight incline.
- 2Drive your hips up and plant your feet flat, hip-width apart, to make a stable bridge with your body roughly inclined toward your head.
- 3Press the dumbbell up over your upper chest with a slight bend in your elbow and your palm facing inward; let your free hand rest on your hip or thigh for balance.
- 4Brace your core and squeeze your shoulder blade back against the ball to lock your shoulder in place.
- 5Open your arm out and down in a wide arc, keeping the fixed elbow bend, until you feel a stretch across your upper chest.
- 6Stop when your upper arm is roughly level with your torso, before the shoulder rolls forward.
- 7Squeeze your chest to bring the dumbbell back up along the same arc until it is over your upper chest again.
- 8Finish all reps on one side, then switch the dumbbell to the other hand and repeat for an equal set.
Technik-Tipps
- Lead the lift with your chest, not your hand — think about driving your upper arm across your body rather than pressing the weight up.
- Keep the same soft elbow bend from start to finish so the movement stays a fly and does not turn into a press.
- Tighten your glutes and core to keep your hips level; letting one hip drop is the most common balance leak on the ball.
- Go lighter than you would for a two-arm or flat-bench fly — the unstable base and single-arm load make a moderate weight feel heavier.
- Control the lowering phase and keep the dumbbell over your working shoulder so it never drifts out where you could lose it on the ball.
Häufige Fehler
- Bending the elbow more as the arm lowers, which turns the fly into a press and shifts work off the chest onto the triceps.
- Dropping the arm too far below torso level, which over-stretches the shoulder joint and risks injury, especially on an unstable ball.
- Letting the hips sag toward the floor, which collapses the bridge, kills upper-chest tension, and throws off your balance.
- Rolling the shoulder forward at the bottom instead of keeping the shoulder blade pinned, removing tension from the upper chest.
- Using momentum or a heavy weight you cannot control, which is dangerous one-armed on a ball and reduces the stretch-and-squeeze that makes the fly work.
Häufig gestellte Fragen
What muscles does the dumbbell incline one arm fly on an exercise ball work?
It primarily targets the upper, clavicular-head fibers of the pectoralis major (the upper chest), with the front deltoid and biceps assisting. The ball also recruits your core and supporting shoulder as stabilizers.
Why do this fly one arm at a time?
Training one arm at a time lets you focus on each side individually, which helps fix left-right strength imbalances and gives the working chest a longer, more controlled range of motion.
Do I need an exercise ball, or can I use a bench?
A bench works fine and is more stable. The exercise ball adds an unstable base that forces your core and shoulder to stabilize, so use the ball when you want that extra control challenge and a bench when you want to focus purely on the chest.
How heavy should the dumbbell be?
Start light. The single-arm load and unstable ball make the weight feel heavier than a flat-bench fly, so choose a dumbbell you can control through a full, smooth arc for 10–15 reps per arm.
Where should I feel this exercise?
You should feel a stretch and squeeze across your upper chest near the collarbone. If you mostly feel it in your shoulder or triceps, lower the weight, keep the elbow bend fixed, and stop the lowering phase before the shoulder rolls forward.
