Static strength
Iron Cross
A hold on two rings with the arms straight out to the sides and the body hanging between them. It is a competition element for trained gymnasts; the research is about them, and this page says where it stops.
- Difficulty
- Expert
- editorial estimate
- Steps to it
- 3 steps
- Intermediate → Expert
- Usually done on
- Rings
Prepared by Calisthenics Balkan. Not yet reviewed by a qualified coach. 7 sources
The road at a glance
A short overview with links. Every step is explained in full under Progressions.
Helps to have first
Leads towards
No movement in the Atlas builds directly on this one yet.
01
What it is
The iron cross is a hold on the rings: two rings on straps, the arms straight and out to the sides, the body hanging between them with the legs together. In the FIG men's Code of Points it is a strength-and-hold element: an "inverted cross" and "any cross" are listed among the hold elements, and a hold counts only when the whole body, shoulders and feet included, is still for at least two seconds. The text of the Code we read shows the position in pictograms and gives no verbal description of it.
The Code also says that crosses may not be performed with the legs apart, asks for straight arms during holds and no false grip, and does not recognise a strength hold that deviates from the correct body, arm or leg position by more than 45 degrees; its own example is a cross with the shoulder angle over 45 degrees. A study of judging measures the cross error as the angle of the arms away from the horizontal axis, which is why the picture draws the arms level.
The studies we found are of trained gymnasts. Two compared the muscles of the cross on the rings with the cross on a cable-and-weight assist device called the herdos: one found lower activity on the device and doubted that it reproduces the rings, the other found the pectoralis major and the biceps the most sensitive muscles. We found no study of injuries from the cross itself. A series of operated shoulders in high-level male gymnasts does not name it.
The cross is a straight-arm hold at ring height: what is judged is how close the arms stay to level and how still the body is for two seconds.
History and origin
The origin of the iron cross is not documented in the sources we read, so we name no first person and no year. We know it as a hold element in current competition rules, not where it started.
02
How it is done
- 1
Rings, no false grip
Two rings on straps. The Code asks for no false grip: the wrists are straight, with or without the fingers wrapped round the rings.
- 2
Arms straight, out to the sides
The arms stay straight through the hold (Code) and level with the shoulders: the angle of the arms away from level is what a judging study treats as the cross error.
- 3
Body between the rings
The body hangs between the rings with the legs together; the Code does not allow crosses with the legs apart.
- 4
Hold still
The whole body, shoulders and feet included, is still for at least two seconds for the hold to count in competition.
- 5
Getting in and out
The Code lists many entries (swings, pulls, presses). We found no teaching source that describes them for learners, so we describe none.
03
Progressions
These are common steps, not the only road, and the only source that lists them is one coaching article from one person's experience. Move on when a step is controlled and painless, not when you reach a number.
What to have first
Strong pulling
Low uses pull-up strength as the baseline for his estimate of how long the cross takes. The numbers, a body weight and a number of months come from his own experience and are not reliable enough to repeat.
Conditioned elbows and shoulders
Low and the shoulder literature both point at the shoulder and the elbow. Pain in either is a reason to stop and ask.
A coach and rings you trust
The studies are of trained gymnasts, and the steps use spotting, bands, pulleys or weights. Nothing we read describes learning this alone.
- 1
Step 1·Intermediate
Ring support
Straight arms down by the hips on the rings with the body above them. In Steven Low's article the cross exercises start from support with the rings turned out, so it is where the cross work begins; he does not name it as a requirement. The picture shows it from the front.
Technical note: Low names pull-up strength and conditioned elbows and shoulders as starting traits; his numbers come from his own experience and we do not repeat them.
- 2
Step 2·Expert
Assisted crosses
Part of the load is taken by a spotter, a band or a pulley, or by weights on a block. Low lists assisted crosses with a spotter first, then band or pulley cross pullouts, then block pullouts with weight. The herdos, a cable-and-weight assist device, is studied in two papers. The picture shows the arms partly below level, as a drawing; it cannot show the help.
Technical note: Low warns about shoulder problems from poor shoulder-blade control and about elbow tendinitis, from his experience, with no study behind it.
- 3
Step 3·ExpertGoal
Iron cross
The hold on two rings: straight arms level with the shoulders, the body between them, the legs together, still for at least two seconds.
Technical note: The Code does not recognise a hold more than 45 degrees off the correct position.
04
Community
No one is publicly working on this movement. Add it to your profile and be the first.
Tips from the community
Tips are personal experience, not medical advice or a training plan.
There are no tips for this movement yet.
05
Common mistakes
Arms above or below level
The Code does not recognise a hold more than 45 degrees off the correct arm position; the judging study measures the error as the angle of the arms away from the horizontal.
Bent arms
The Code asks for straight arms in holds, and Low says the elbows must stay locked because bending shifts load to the latissimus dorsi.
Legs apart
The Code does not allow crosses to be performed with the legs apart.
Not holding still
A hold counts only after the whole body, shoulders and feet included, has been still for at least two seconds.
A false grip
The Code asks for no false grip; the wrists stay straight.
Pushing through shoulder or elbow pain
Low says pain that lasts after a session or on rest days calls for rest. Among the operated shoulders in one series, three were injured holding a strength position on the rings; the abstract does not name the cross.
06
Variations and related skills
V cross and L-cross
Stance
Listed separately in the Code (the V cross) and mentioned by Low (the L-cross, which he says loads the chest more). No picture here.
Herdos cross
Equipment
The cross on a cable-and-weight assist device. In the 2004 study the muscle activity was lower than on the rings and the authors doubted that it reproduces the coordination of the rings; in the 2023 study adding load on it brought the muscle activity closer to the rings.
Another hold on the rings in the Code, listed among the same strength elements as the cross.
The pulling strength Low uses as his baseline.
Related skillsBack LeverPlanche
On Calisthenics Balkan
- Read about Static strength in LearnThe movement family this skill belongs to, and how it fits into calisthenics.
- Athletes with Iron Cross on their profileSkill labels on profiles are set by the athletes themselves and are not verified.
- All movements in the AtlasCalisthenics movements, one at a time: what they are, how they are done and the steps that lead to them.
07
Sources
What this page relies on. Titles and publishers are written as published.
The small numbers in the text point to the entries below.
- 1Men's Artistic Gymnastics Code of Points 2025-2028 (Section 12, Rings)FIG, International Gymnastics Federation; competition rules only (the PDF text was read: hold elements, the 2-second rule, no leg separation, the 45-degree rule); it shows the position in pictograms and gives no verbal definition
- 2Influence of angle of view on judges' evaluations of inverted cross in men's ringsDallas, Mavidis and Chairopoulou, Perceptual and Motor Skills 2011; 16 judges, photographs of 8 gymnasts from three angles of view (abstract read)
- 3Benefits of Training the Iron Cross With Herdos Devices and External Load Added to Body Weight for Young Nonachiever GymnastsMarina, Torrado, Ferrer-Uris and Busquets, International Journal of Sports Physiology and Performance 2023; muscle activity of seven muscles, gymnasts who can and cannot do the cross (abstract read)
- 4Surface electromyography of nine shoulder muscles in two iron cross conditions in gymnasticsBernasconi, Tordi, Parratte, Rouillon and Monnier, Journal of Sports Medicine and Physical Fitness 2004; 6 male gymnasts, 10 crosses on the rings and on the herdos (abstract read)
- 5A Systematic Review of Dynamic, Kinematic, and Muscle Activity during Gymnastic Still Rings ElementsMalíř, Chrudimský, Šteffl and Stastny, Sports 2023; 37 studies, strength and hold elements among them (abstract read)
- 6The Injured Shoulder in High-Level Male Gymnasts, Part 1: Epidemiology and Pathoanatomy of Surgically Treated LesionsGendre and Boileau, Orthopaedic Journal of Sports Medicine 2021; 26 high-level male gymnasts operated on for shoulder pain or instability; the cross is not named (abstract read)
- 7Developing the Iron CrossSteven Low, Performance Menu Journal, issue 34, 2007; one coaching author's article from his own experience, with no citations; the only source we found that lists steps (read in full)
A note on safety. This page describes the movement in general. It is not a training plan and not medical advice. The iron cross is among the hardest holds in gymnastics and the research is of trained gymnasts: we found no study of its injuries, and no federation or university page that teaches it. A series of 26 high-level male gymnasts operated on for shoulder pain or instability found that 27 of 30 shoulders were injured by traction in forced flexion and rotation on suspension equipment with the hands locked, and 3 by holding a strength position on the rings; the abstract does not name the cross. Low's warnings about the shoulder and the elbow come from his experience, with no study behind them. A review of still-rings elements says that support devices such as the herdos or support belts can reduce the load. Build up very gradually, with a qualified coach, and stop with pain in the shoulder, elbow or chest.
Prepared by Calisthenics Balkan. Not yet reviewed by a qualified coach.
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