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Scapular Clock (Wall-Supported)

Draftmobility75%beginner⬤ moderate evidence
View FHIR resourceFHIR R4 ActivityDefinition — the interoperable form of this exercise

Positions & Range of Motion

Start
standing facing a wall with both forearms and elbows in light contact at shoulder height
End
forearms having traced a full slow clockwise (then counter-clockwise) circle on the wall and returned to start, scapulae gliding around the rib cage throughout
Range of Motion
full scapulothoracic circumduction (protraction, elevation, retraction, depression) through the clock-face circle, forearms staying on the wall

How to Perform

Stand facing a wall, forearms and elbows in contact with the wall at shoulder height. Slide both forearms together in a slow circular pattern (clockwise then counter-clockwise), tracing a clock face. Scapulae glide around the rib cage throughout.

Watch on YouTube↗

Opens a YouTube search for “Scapular Clock (Wall-Supported)”

Starting position: standing

Coaching Cues

  1. 1

    Forearms stay in light contact with the wall the entire circle

    (tactile)
  2. 2

    Move slowly — 6+ seconds per circle

    (verbal)

Evidence-Based Dosing & EMG Data

Recommended Dosing

5 circles each direction.

Muscles Involved (12)

Primary Movers

Serratus Anterior— True prime mover: drives protraction and upward rotation and holds the scapula flush to the rib cage throughout the entire circle. Sole primary.

Secondary Movers

Middle Trapezius— Downgraded from primary — only drives the retraction (toward-spine) quarter of the clock face, not co-equal with serratus.
Lower Trapezius— Depression and upward rotation during the lower/downward arc of the circle.
Upper Trapezius— Elevation and upward-rotation assist at the top (12 o'clock) of the clock.
Rhomboid Major— Retraction and downward rotation on the medial/lower portion of the arc.
Levator Scapulae— Assists elevation (and downward rotation) at the top of the clock.

Stabilizers

Subscapularis— Rotator cuff; low-demand GH centration while the arm rests supported at shoulder height on the wall.
Supraspinatus— Rotator cuff; light GH compression/centration with the wall bearing most of the arm's weight.
Infraspinatus— Rotator cuff; assists glenohumeral centration during the supported circular motion.
Teres Minor— Rotator cuff; assists GH stabilization of the wall-supported arm.
Anterior Deltoid— Light horizontal-adduction pressure helping keep the forearm in contact with the wall; low demand given wall support.
Pectoralis Major— Light isometric horizontal adduction pressing the forearm into the wall to maintain contact throughout the circle.

Easier Variations ↓

1

Half-Range Clock

Top half (12 → 3 → 6) only until shoulder is steady through full range.

Harder Variations ↑

1

Resisted Clock

Add a band around both wrists for serratus + lower trap load.

Target Movements (6)

Scapular ProtractionScapulothoracic Articulation
Scapular RetractionScapulothoracic Articulation
Scapular ElevationScapulothoracic Articulation
Scapular DepressionScapulothoracic Articulation
Scapular Upward RotationScapulothoracic Articulation
Scapular Downward RotationScapulothoracic Articulation

Why This Exercise Matters

Everyday activities this exercise helps you do — essential means it directly trains the capacity the task needs:

Reaching OverheadPosture MaintenanceSustained Overhead Work

Goals This Helps With

Rehab, performance, prevention, and mobility goals this exercise supports — essential means it's a cornerstone:

Improve Shoulder MobilitymobilityShoulder Injury Preventionprevention

Research Notes

Scapulothoracic control drill; restores upward rotation + posterior tilt patterns disrupted in fine-motor / sustained-posture occupations (musicians, surgeons).