Dumbbell External Rotation exercise animation (Hombre)

Dumbbell External Rotation

Músculo objetivo
Teres Major, Teres Minor
Músculos sinergistas
Deltoid Posterior
Equipamiento
Dumbbell
Parte del cuerpo
Back
Tipo
Strength

The dumbbell external rotation is a light-load isolation exercise that targets the rotator-cuff and upper-back muscles (teres major and teres minor), with help from the rear (posterior) deltoid. Performed lying on your side with a light dumbbell, it builds shoulder stability and is widely used for prehab, rehab, and warming up before heavy pressing.

Cómo hacer el Dumbbell External Rotation

  1. 1Lie on your side on a bench or the floor with your working arm on top and a light dumbbell in that hand.
  2. 2Bend your top elbow to 90° and tuck it firmly against your side, keeping your forearm across your stomach.
  3. 3Rest your head on your bottom arm and brace your core so your torso stays still throughout the set.
  4. 4Keeping your elbow pinned to your ribs, slowly rotate your forearm upward by externally rotating the shoulder.
  5. 5Raise the dumbbell until your forearm points toward the ceiling, without letting your elbow drift away from your body.
  6. 6Pause briefly at the top, feeling the contraction in the back of your shoulder.
  7. 7Lower the dumbbell under control back across your stomach to the starting position.
  8. 8Complete your reps, then switch sides and repeat with the other arm.

Consejos de técnica

  • Use a very light dumbbell — this is a control and stability movement, not a strength lift, so quality of motion beats load.
  • Keep your elbow glued to your side the entire set; rolling a towel between your elbow and ribs can help you feel it.
  • Move slowly and only through your pain-free range of motion, focusing on the rotation rather than swinging the weight.
  • Keep your wrist neutral and in line with your forearm so the work stays in the shoulder.

Errores comunes

  • Using too heavy a dumbbell, which forces your body to swing and shifts the work off the rotator cuff onto larger muscles.
  • Letting the elbow drift away from your ribs, which turns the movement into a shoulder raise and reduces the targeted rotation.
  • Rotating too fast or using momentum, which removes tension from the cuff and increases injury risk.
  • Rolling the torso back to lift the weight instead of keeping it still and isolating the shoulder.

Preguntas frecuentes

What muscles does the dumbbell external rotation work?

It primarily works the rotator-cuff and upper-back muscles — the teres major and teres minor — with the rear (posterior) deltoid assisting the rotation.

How much weight should I use for external rotations?

Go light. Most people start with 1–5 kg (2.5–10 lb). The cuff muscles are small, so prioritize slow, controlled reps over heavier weight.

Is the dumbbell external rotation good for beginners?

Yes. It is a simple, low-load isolation movement that builds shoulder stability, making it a good choice for beginners and for prehab or warm-ups before pressing.

How many sets and reps should I do?

Because the load is light, 2–3 sets of 12–20 controlled reps per arm works well, whether as warm-up or accessory work for shoulder health.

Where should I feel this exercise?

You should feel it in the back of your shoulder and upper back, not in your elbow or the front of the joint. If you feel pinching, reduce the range or the weight.

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