#BAHU · Scapulohumeral Rhythm Truth · Myth-Busting
- Elliot Arifin
- Jul 28
- 2 min read
The biomechanics
SCAPULOHUMERAL RHYTHM TRUTH
RATIO: 2:1 humeroscapular ratio
Setiap 30° humerus elevation = 10° scapula upward rotation
Full 180° arms overhead = ~60° scapula upward rotation
UPPER TRAP ROLE:
Normal upper trap activation = REQUIRED untuk overhead
Excessive upper trap = problem (chronic tension pattern)
Beda antara "aktivasi normal" vs "over-activation"
CONSEQUENCES OF FORCING SHOULDER DOWN:
Restricts scapular rotation
Creates humeral head impingement
Reduces overhead range
Damages rotator cuff long-term
CONTEXT MATTERS:
PLANK/PUSH-UP: scapular DEPRESSION + PROTRACTION (correct)
OVERHEAD: scapular UPWARD ROTATION (elevation IS correct)
The 3 drills
Drill 1 · Wall Angel Rhythm Test
Berdiri backs against wall
Arms in goalpost position (90/90)
Slide arms up wall keeping contact
Rasain scapula ROTATE upward secara natural
If arms come off wall · itu limitation range
10 reps · daily
Drill 2 · Overhead Reach with Awareness
Angkat 1 tangan ke atas
Palpasi (touch) scapula kamu dengan tangan lain
Rasain scapula rotate + elevate saat lengan naik
Ini NORMAL · practice awareness
Do NOT try to force scapula down · itu mistake
Drill 3 · When to Depress vs When to Elevate
PLANK/PUSH-UP context:
Scapula PROTRACTS + slight depression
Serratus anterior active
Cue "push floor away" OVERHEAD context (arms up):
Scapula ROTATES UPWARD + elevation
Upper trap normal activation
Cue "reach arms freely up"
Practice schedule
AWARENESS PROTOCOL
Week 1: Wall angel rhythm test · daily awareness
Week 2: Palpation practice · feel your own scapula move
Week 3: Apply awareness in overhead poses (warrior 1, tree, dolphin)
Week 4: Un-learn old cue · trust natural mechanism
Indicators of progress
Overhead range improves
Less shoulder impingement pain
Warrior 1 feels open (bukan restricted)
Handstand access improves
Trust that shoulder elevation is safe di overhead
When shoulder elevation IS a problem
Chronic tension pattern (upper trap always tight)
In neutral position, arms below shoulder
Stress-related shoulder holding
These need addressing separately · not by depressing during overhead
Common misconceptions
❌ "Shoulders away from ears always"
✓ "Shoulders elevate naturally during overhead"
❌ "Push shoulders down in warrior 1"
✓ "Reach arms freely up · trust scapula rhythm"
Related library topics
Comments