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Scaption with External Rotation

Draftstrength85%intermediate⬤ moderate evidence
View FHIR resourceFHIR R4 ActivityDefinition — the interoperable form of this exercise

Positions & Range of Motion

Start
standing tall, long spine, arms at sides with thumbs up, free hand resting on the upper trap
End
arms elevated to about shoulder height in the scapular plane (30–45° anterior to coronal), thumbs up and externally rotated so hands aim toward the 11 and 1 o'clock ceiling corners
Range of Motion
shoulder elevation 0→~90° in the scapular plane combined with glenohumeral external rotation

How to Perform

Standing with arms elevated in the scapular plane (30–45° anterior to coronal), thumbs up, externally rotate to bias posterior rotator cuff.

Watch on YouTube↗

Opens a YouTube search for “Scaption with External Rotation”

Equipment:dumbbell
Starting position: standing

Coaching Cues

  1. 1

    Long spine, thumbs up — pull from beneath the shoulder blade

    (verbal)
  2. 2

    Lift the thumbs toward the far ceiling corners

    (verbal)
  3. 3

    Aim the hands at 11 and 1 o'clock at shoulder height

    (verbal)
  4. 4

    Free hand on upper trap to keep it quiet

    (tactile)

Evidence-Based Dosing & EMG Data

Recommended Dosing

3×10–12, 3×/week × 12 weeks

EMG Activation Data

Activates all three upward-rotation force couple components (UT, LT, SA) [Castelein 2016; Decker 1999].

Muscles Involved (7)

Primary Movers

Serratus Anterior
Upper Trapezius
Lower Trapezius

Secondary Movers

Supraspinatus
Middle Deltoid
Anterior Deltoid

Synergists & Assistors

InfraspinatusSynergist

Easier Variations ↓

1

Unweighted Scaption

Bodyweight only, full ROM.

Harder Variations ↑

1

Increased Load

Progress to 3–5 lb, then 8 lb.

2

Full Overhead Scaption

Progress to full overhead elevation.

3

Single-Arm Scaption

Unilateral to challenge trunk stability.

Target Movements (4)

Scapular Upward RotationScapulothoracic Articulation
Shoulder FlexionGlenohumeral Joint
Shoulder AbductionGlenohumeral Joint
Shoulder External RotationGlenohumeral Joint

Why This Exercise Matters

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

Reaching OverheadessentialSustained Overhead WorkessentialThrowing & Overhead Sport

Goals This Helps With

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

Rotator Cuff TendinopathyrehabSubacromial Shoulder PainrehabShoulder Injury PreventionpreventionImprove Overhead Pressingperformance

Research Notes

AUDIT[low]: The glenohumeral prime movers of scaption elevation (middle deltoid, anterior deltoid, supraspinatus) are all marked 'secondary'/'synergist' while the scapular force-couple (upper/lower trapezius, serratus anterior) are marked 'primary', inverting the humeral prime-mover roles for an elevation lift. → Reclassify middle deltoid and supraspinatus as primary humeral movers, or relabel the trapezius/serratus as scapular stabilizers rather than primary.