How to Do Dumbbell Starfish Crunch Alternating

Dumbbell Starfish Crunch Alternating is a core exercise using dumbbell, listed as intermediate in the A90 Training Club catalogue.

Primary muscle

Core

Equipment

Dumbbell

Difficulty

Intermediate

01 / Move with control

How to perform

How to do Dumbbell Starfish Crunch Alternating

  1. 01Lie flat on the floor with arms and legs spread wide in an X shape, holding one dumbbell in the right hand.
  2. 02Contract the abdominals to lift the right arm and left leg simultaneously toward the midline of the body.
  3. 03Touch the dumbbell toward the left foot at the peak of the crunch while rotating the upper torso.
  4. 04Lower the arm and leg back to the floor with precision before switching the dumbbell to the left hand.
  5. 05Exhale forcefully during the upward phase of the crunch to maximize the contraction of the obliques.

Same guidance shown inside the A90 app

02 / Anatomy

Muscles worked by Dumbbell Starfish Crunch Alternating

Primary Stabiliser Inactive

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Primary movers

  • Core Stabilises the spine and transfers force.

Stabilisers

  • Lower back Stabilises the spine during lifts and bends.
  • Forearms Grips and stabilises the wrist under load.

03 / A90 Coach

A90 Coach tip

Focus on lifting the shoulder blades off the floor rather than just reaching with the arm to ensure deep abdominal recruitment.

Same coaching engine used inside the A90 app

05 / FAQ

Dumbbell Starfish Crunch Alternating questions

What muscles does Dumbbell Starfish Crunch Alternating work?

Dumbbell Starfish Crunch Alternating is catalogued as a core exercise in A90 Training Club, with the core as its primary muscle group.

How do you do Dumbbell Starfish Crunch Alternating correctly?

Lie flat on the floor with arms and legs spread wide in an X shape, holding one dumbbell in the right hand. Contract the abdominals to lift the right arm and left leg simultaneously toward the midline of the body. Touch the dumbbell toward the left foot at the peak of the crunch while rotating the upper torso. Lower the arm and leg back to the floor with precision before switching the dumbbell to the left hand. Exhale forcefully during the upward phase of the crunch to maximize the contraction of the obliques.

What is the A90 coach tip for Dumbbell Starfish Crunch Alternating?

Focus on lifting the shoulder blades off the floor rather than just reaching with the arm to ensure deep abdominal recruitment.

Is Dumbbell Starfish Crunch Alternating suitable for beginners?

Dumbbell Starfish Crunch Alternating is rated intermediate in the A90 Training Club catalogue.

What equipment do you need for Dumbbell Starfish Crunch Alternating?

Dumbbell Starfish Crunch Alternating uses dumbbell.

A90 Intelligence

Put this into a real plan.

A90 Intelligence programmes dumbbell starfish crunch alternating into a 30, 60 or 90 day plan built around your equipment, then adjusts it as you train.

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