Smart Workout Diary

Dumbbell Concentration Curl on Stability Ball

The dumbbell concentration curl on a stability ball is a single-arm biceps exercise performed while seated on a stability ball, with the working elbow braced against the inner thigh. It primarily targets the biceps while the ball adds a balance and posture challenge. It supports arm-strength and muscle-building goals when performed with controlled resistance.

Demonstration

Dumbbell Concentration Curl on Stability Ball — demonstration 1
Dumbbell Concentration Curl on Stability Ball — demonstration 2

Instructions

  1. Set up: Place a stability ball on a clear, non-slip surface and sit near its front with both feet firmly planted about hip-width apart.
  2. Position: Hold one dumbbell with a neutral grip. Lean slightly forward and brace the back of the working upper arm or elbow against the inner thigh; keep the arm nearly straight.
  3. Curl: Keep the upper arm still and curl the dumbbell toward the working shoulder by bending the elbow. Turn the palm upward as you lift if comfortable.
  4. Pause: Briefly squeeze the biceps at the top without lifting the elbow from the thigh or rounding the back.
  5. Lower and switch: Slowly lower the dumbbell until the elbow is nearly straight, maintaining control. Complete the repetitions, then change arms while staying balanced on the ball.
Muscle Group
Biceps
Type
Strength
Mechanics
Isolation
Equipment
Dumbbell, Exercise Ball
Difficulty
Intermediate

Technique tips

  1. Choose a manageable load: Use a dumbbell you can lower slowly without swinging the torso or shifting around on the ball.
  2. Keep the elbow anchored: Let the elbow act as the pivot; do not pull it forward to make the repetition easier.
  3. Prioritize balance: If you cannot keep both feet planted and the ball steady, reduce the load or practice the movement on a stable seat first.
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