What is Straight arm protractive scapula plank?

Straight arm protractive scapula plank is an Easy bodyweight core exercise where you hold a high plank while actively protracting the shoulder blades to train scapular stability and core endurance. It primarily targets the core and shoulder stabilizers and suits beginners working on posture and midline control.

How to Do Straight arm protractive scapula plank

  1. Set up plank: Place hands under shoulders, legs straight and toes grounded. Stack shoulders over wrists, engage glutes, and create a straight line from head to heels.
  2. Protract shoulders: Push the floor away by rounding the upper back and spreading the shoulder blades apart while keeping elbows straight and shoulders active.
  3. Brace the core: Draw your navel toward the spine, keep pelvis neutral, and maintain steady breathing to prevent low-back sag or excessive arching.
  4. Maintain alignment: Keep hips level, avoid rotation, and ensure the chest does not drop or elbows bend while holding the protracted scapula position.
  5. Finish safely: Release the protraction to a neutral shoulder position, rest on knees or forearms, and perform gentle scapular retractions and breathing cycles.

Muscle Groups

Core

Description

Start in a high plank position with your arms straight and shoulders stacked over your wrists. Push the floor away by rounding your upper back and spreading your shoulder blades apart — that’s the protraction. Hold this position while keeping your core tight and body in a straight line. Don’t let your chest drop or your elbows bend.

Movement Group

Core

Required Equipment

None (bodyweight only)

Progressions and Regressions

Frequently Asked Questions

What are the benefits of the straight arm protractive scapula plank?

This exercise improves scapular stability, core endurance, and shoulder positioning without equipment. It supports better posture, reduces risk of shoulder impingement, and builds midline control useful for push-up and overhead pressing mechanics.

What common mistakes should I avoid when doing this plank?

Avoid dropping the chest, bending the elbows, flaring ribs, holding your breath, or shrugging the neck. Focus on straight arms, active protraction, neutral pelvis, and steady breathing to maintain safe form.

How can I progress or regress this exercise?

Regress by performing the protraction plank on knees or against a wall. Progress by increasing hold time, adding slow scapular push-ups, single-arm holds, or loading with a weighted vest once form is flawless.