How to Do Alternating Oblique Sit Ups

Alternating Oblique Sit Ups is a core exercise using bodyweight, listed as intermediate in the A90 Training Club catalogue.

Primary muscle

Core

Equipment

Bodyweight

Difficulty

Intermediate

01 / Move with control

How to perform

How to do Alternating Oblique Sit Ups

  1. 01Lie on your back with knees bent, feet flat on the floor, and fingertips lightly touching your temples.
  2. 02Lift your right shoulder off the ground and rotate your torso to bring the right elbow toward the left knee.
  3. 03Lower back to the floor under control and immediately repeat the movement on the opposite side.
  4. 04Exhale on every ascent and keep the chin tucked to avoid straining the cervical spine.

Same guidance shown inside the A90 app

02 / Anatomy

Muscles worked by Alternating Oblique Sit Ups

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 driving the shoulder toward the opposite knee rather than just moving the elbow to maximize oblique engagement.

Same coaching engine used inside the A90 app

05 / FAQ

Alternating Oblique Sit Ups questions

What muscles does Alternating Oblique Sit Ups work?

Alternating Oblique Sit Ups is catalogued as a core exercise in A90 Training Club, with the core as its primary muscle group.

How do you do Alternating Oblique Sit Ups correctly?

Lie on your back with knees bent, feet flat on the floor, and fingertips lightly touching your temples. Lift your right shoulder off the ground and rotate your torso to bring the right elbow toward the left knee. Lower back to the floor under control and immediately repeat the movement on the opposite side. Exhale on every ascent and keep the chin tucked to avoid straining the cervical spine.

What is the A90 coach tip for Alternating Oblique Sit Ups?

Focus on driving the shoulder toward the opposite knee rather than just moving the elbow to maximize oblique engagement.

Is Alternating Oblique Sit Ups suitable for beginners?

Alternating Oblique Sit Ups is rated intermediate in the A90 Training Club catalogue.

Do you need equipment for Alternating Oblique Sit Ups?

No. Alternating Oblique Sit Ups is listed as a bodyweight movement in the A90 catalogue, so you can train it with no kit.

A90 Intelligence

Put this into a real plan.

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

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