Iron Cross Progression Tree
Elite gymnastic rings straight-arm adduction static strength (OG Levels 8–14)
The Iron Cross is an iconic Level 13–14 gymnastic rings isometric hold where the athlete suspends their entire bodyweight horizontally with straight arms abducted at 90°. Per Overcoming Gravity prerequisites, athletes must first master a 30-second Rings Turned Out (RTO) 45°–90° Support Hold, Back Lever, and straight-arm tendon conditioning before beginning assisted or block-supported Iron Cross holds to prevent distal biceps tendon or elbow collateral ligament injury.
Connective Tissue & Leverage Note: At 90° shoulder abduction on unstable straps, the moment arm equals the full length of the humerus plus forearm (~60 cm). Using a false grip (wrists flexed over the bottom of the rings) reduces the effective moment arm by 12–15%.
Interactive Iron Cross Node Inspector
Interactive Progression DAG (2 Stages)
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Iron Cross
Full Back Lever + Straddle Planche + 6 months RTO Support / Cross Pulls
3 sets × 5s horizontal shoulder-level hold on rings (Logging Type: DURATION)
- Depress scapulae maximally so the shoulders sit within 5° of the horizontal ring line
- Maintain locked 180° elbows with cubital fossae facing forward
- Co-contract pectoralis major and latissimus dorsi evenly to keep straps vertical
Iron Cross Progression Stages & Quantitative Readiness Gates
Complete Overcoming Gravity level mapping, prerequisite readiness thresholds, and mastery criteria for every node in the Iron Cross tree.
| Stage | Skill Node | OG Level | Leverage | Readiness Gate | Mastery Standard |
|---|---|---|---|---|---|
| #1 | Strict Ring Muscle-Up & RTO Support | L7 (Advanced) | 0.45× Ring Torque | 30s RTO 45° Support Hold + 12 Ring Dips | 3 × 5 Strict Ring Muscle-Ups with 10s RTO 90° Support Hold |
| #2 | Iron Cross | L14 (Elite) | 1.00× Max Ring Torque | Full Back Lever + Straddle Planche + 6 months RTO Support / Cross Pulls | 3 sets × 5s horizontal shoulder-level hold on rings |
Primary Force & Stabilizer Muscles
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Frequently Asked Questions — Iron Cross
What are the mandatory prerequisites before training the Iron Cross?
Overcoming Gravity recommends six structural prerequisites before Iron Cross training: a 30s RTO 45°+ Support Hold, a clean Full Back Lever, straight-arm frog/planche conditioning, German Hang mobility, and zero medial elbow pain.
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