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Muscle-up
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Diagram of muscle up steps
A man performing a muscle-up

The muscle-up (also known as a muscleup or muscle up) is an intermediate strength training exercise within the domain of calisthenics. It is a combination routine of a radial pull-up followed by a dip. Variations exist for the rings as well as the bar.

Form

[edit]

The muscle-up begins with the arms extended above the head, gripping a hold in the overhand pull-up position. The hold is usually on a chin-up bar or gymnastic rings.

The body is then explosively pulled up by the arms in a radial pull-up, with greater speed than a regular pull-up. When the bar approaches the upper chest, the wrists are swiftly flexed to bring the forearms above the bar. The body is leaned forward, and the elbows are straightened by activating the triceps. The routine is considered complete when the bar is at the level of the waist and the arms are fully straight.

To dismount, the arms are bent at the elbow, as in a dip, and the body is lowered to the floor, and the exercise can be repeated.

As a relatively advanced exercise, muscle-ups are typically first learned with an assistive kip. The legs swing (kip) up and provide momentum to assist in the explosive upward force needed to ascend above the bar. More advanced athletes can perform a strict variation of the muscle-up which is done slowly, without any kip. This variation begins with a swinging dead hang (or by standing still, with feet further forward than the bar, if the person's feet can touch the ground) and uses muscle contraction to ascend above the bar in an explosive yet controlled fashion.

Grip and wrist position

[edit]

A closed pull-up grip involves the thumb on the opposite side of the bar from the rest of the fingers. When rings are used, an advanced position known as the "false grip" must be performed in order to transition smoothly from the pull-up to the dip.

Muscles targeted

[edit]

True to its name, the muscle-up targets a large number of muscle groupings in the back, shoulders, arms, and core. Major pull-up power comes from the latissimus dorsi muscle of the back and the biceps. The entire core is also engaged throughout this movement in order to stabilize the transition. Once over the bar, the triceps provide the bulk of the power for the final dipping motion. Upper chest and lower chest also becomes engaged as it provides significant amount of pressure once an athlete gets on top of the bar/ring.

World records

[edit]
  • Most consecutive bar muscle ups: 56 by Max True (Germany) 2025.[1]
  • Most consecutive ring muscle ups: 21 by Love Andersson (Norway) 2022.[2]

See also

[edit]

References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Muscle-up

View on Grokipedia
from Grokipedia
A muscle-up is an advanced calisthenics and gymnastics exercise that combines a pull-up and a dip into a single, fluid movement, enabling the performer to transition from a hanging position beneath a pull-up bar or gymnastic rings to a supported position above it. Originating in men's as a fundamental strength maneuver, the muscle-up has been adapted and popularized in modern fitness disciplines such as and street workout programs since the early , emphasizing both brute pulling power and explosive pushing dynamics without reliance on momentum in its strict form. It primarily targets the upper body musculature, including the latissimus dorsi, biceps brachii, triceps brachii, deltoids, , and core stabilizers like the transverse abdominis, while also demanding exceptional and shoulder mobility to execute the critical transition phase safely. Common variations include the bar muscle-up (BMU), performed on a fixed pull-up bar, which allows for a more stable base but requires precise timing to clear the bar during the pull; and the ring muscle-up (RMU), executed on suspended gymnastic rings, which introduces greater instability and engages additional stabilizer muscles in the shoulders and core, making it more challenging. Strict muscle-ups rely solely on concentric strength without kipping or swinging, whereas kipping versions incorporate hip drive and momentum for higher volume in , though they demand even greater body control to avoid injury. The exercise's benefits extend beyond aesthetics, fostering overall upper-body power, neuromuscular coordination, and functional strength that translate to sports like and disciplines, but it requires progressive training—starting with assisted pull-ups, dips, and false-grip drills—to build the necessary prerequisites and prevent common issues like shoulder strain. In competitive contexts, such as events, muscle-ups test and technique under , with ring variations often featured for their added difficulty.

Overview

Definition and Types

A muscle-up is an advanced calisthenics exercise that combines an explosive pull-up from a hanging position with a dip to transition the body to a support position above the bar or rings. This compound movement demands significant upper-body strength, coordination, and control, distinguishing it from isolated pull-ups or dips by requiring a seamless transition phase where the athlete shifts from pulling to pushing mechanics. The primary types of muscle-ups include the bar muscle-up, performed on a straight pull-up bar, and the ring muscle-up, executed on gymnastic rings, with the latter emphasizing greater instability and stabilizer muscle engagement due to the rings' freedom of movement. Muscle-ups are further categorized by technique: the strict muscle-up relies solely on muscular strength without momentum or kipping, making it more demanding on pure power, while the kipping muscle-up incorporates a swing or hip drive to assist the transition, allowing for higher volume but reduced emphasis on raw strength. Proficiency in foundational exercises is essential, typically requiring the ability to perform at least 10-15 strict pull-ups and 10-15 strict dips to build the necessary pulling and pushing strength for the transition. For ring variations, additional shoulder mobility and familiarity with false grip are often prerequisites. Equipment includes a standard pull-up bar for the bar version or adjustable gymnastic rings suspended from a sturdy frame for the ring version, with the rings' instability increasing the exercise's overall difficulty.

History

The muscle-up traces its origins to 18th-century European and military training, evolving from foundational exercises designed to build upper-body strength and discipline. In the 1770s, German educator Johann Bernhard Basedow founded the Philanthropinum school in , , where structured programs emphasized movements on horizontal and , including pull-ups and chin-ups, to foster physical robustness among students and influence military regimens. These bar-based drills, which combined pulling and pressing actions, provided the mechanical basis for the muscle-up as a transitional hybrid exercise, though the full modern form emerged later through iterative development in . During the 20th century, the muscle-up solidified its place in competitive gymnastics and bodybuilding, reflecting broader trends in strength training. By the 1920s, variations of the movement appeared in Olympic artistic gymnastics routines on rings and bars, where athletes performed explosive pull-to-dip transitions as part of strength displays, building on the sport's formal inclusion at the 1896 Athens Games. In parallel, early 20th-century bodybuilders like Maxick (Max Sick), active in the 1910s, advocated for "muscle control" techniques that honed isolated upper-body contractions, promoting exercises akin to pull-up and dip progressions to achieve precise strength and aesthetics. A key milestone came post-World War II, when calisthenics incorporating pull-up and dip elements were embedded in U.S. military fitness protocols, such as those adopted by the Marine Corps in the 1940s and 1950s to enhance combat readiness through bodyweight training. The exercise saw a modern resurgence in the 2000s via CrossFit, which introduced the muscle-up as a benchmark for functional strength in its foundational programming, as detailed in a 2002 CrossFit Journal article emphasizing its role in building unparalleled upper-body power. By the 2010s, street workout communities further democratized the muscle-up, transforming it from an elite gymnastic skill into an accessible calisthenics staple, amplified by viral demonstrations on platforms like YouTube that showcased urban athletes performing high-volume sets.

Technique

Grip and Positioning

The grip used in a muscle-up significantly influences stability, transition efficiency, and overall performance, with variations tailored to the apparatus—bar or rings—and the athlete's experience level. For ring muscle-ups, the false grip is essential, where the hands pass through the rings and rest on the wrists with thumbs positioned over the top, allowing wrist rotation and facilitating the shift from pull to press phases. This grip, while initially uncomfortable, enhances flexor engagement and supports the dynamic movement on unstable rings. In contrast, bar muscle-ups typically employ a pronated grip, with palms facing away from the body and hands placed at approximately width to maintain fixed positioning and optimize pulling power. Supinated grips, where palms face the body, are occasionally used in assisted or modified bar muscle-ups to emphasize involvement and reduce stress, particularly for those with hyperextension concerns. Wrist positioning plays a critical role in preventing and ensuring force transfer, requiring a neutral alignment where the stay in line with the forearms to avoid excessive hyperextension or flexion strains. During the initial pull phase, active wrist flexion helps secure the false grip on rings, while extension becomes necessary in the pressing portion to achieve full lockout; maintaining this dynamic control minimizes joint stress and supports smooth transitions. Proper body positioning begins with a hollow body hold, where the core is fully engaged, shoulders are protracted (pushed forward), and the body forms a slight "C" shape with the tucked to create tension throughout the . This setup promotes initial scapular retraction and depression—pulling the shoulder blades back and down—to initiate the pull effectively, followed by controlled and upward of the scapulae during the ascent for stability. Such alignment enhances power generation and reduces compensatory swinging. Common grip adjustments accommodate skill levels: beginners often opt for a wider-than-shoulder-width pronated grip on the bar to shorten the range of motion and build confidence, while advanced performers prefer a closer grip for greater control, increased lat activation, and a more challenging transition.

Execution Steps

The execution of a muscle-up occurs in a fluid sequence of three primary phases, starting from a dead hang on a pull-up bar or gymnastic rings with shoulders fully extended and core engaged. Phase 1 (Pull): Begin by retracting the scapulae to initiate scapular pull-back, engaging the latissimus dorsi for stability and power generation. Follow with an explosive pull-up motion to elevate the body until the bar or rings reach chest height, focusing on speed to carry momentum into the next phase. In strict muscle-ups, this relies solely on upper-body strength without leg assistance; for kipping variations, incorporate a hip drive—generated by arching the hips forward and snapping them toward the bar—to amplify the pull and reduce the strength demand. Phase 2 (Transition): At the peak of the pull, shift into the transition by leading with the elbows to "catch" the bar or rings, threading them forward while rotating the palms upward (supinated grip). This maneuver clears the forearms and allows the chest to pass over the apparatus, avoiding a common catch where the bar snags on the forearms and halts progress. Maintain forward body lean and core tension to facilitate the smoothly. Phase 3 (Press): From the transitioned position with the chest above the bar or rings and elbows bent, execute a dip press by extending the arms fully to achieve lockout in the support hold. Engage the and stabilizers to control the ascent, ensuring the shoulders remain depressed and the body aligned vertically. A complete repetition is counted from the initial dead hang to the straight-arm support position at the top. Following lockout, descend in a controlled manner back to the dead hang or maintain the support hold briefly for added challenge. The entire movement is typically performed in 2-3 seconds for strict variations to emphasize control, while kipping muscle-ups occur faster due to from the drive.

Muscles and Biomechanics

Primary Muscles Targeted

The muscle-up is a compound exercise that primarily engages several key muscle groups in the upper body and core to execute the pulling, transitional, and pressing phases. In the upper back, the latissimus dorsi acts as the main mover during the initial pull, facilitating extension and adduction to elevate the body toward the bar or rings. The , particularly its middle and lower fibers, contributes to scapular elevation and depression, while the rhomboids support scapular retraction to maintain stability throughout the movement. The serratus anterior assists in scapular protraction and upward rotation for stability. In the arms, the biceps brachii is heavily recruited during the pull phase for elbow flexion, assisting in drawing the chest above the bar. Forearm flexors provide , particularly important in ring muscle-ups using a false grip. Conversely, the brachii becomes the dominant muscle in the pressing phase, driving elbow extension to complete the ascent over the bar or rings. The shoulders involve the anterior deltoids for flexion and elevation in both the pull and press, with the posterior deltoids providing stability during the eccentric lowering. The muscles, including the infraspinatus and teres minor, play a crucial role in stabilization, preventing excessive rotation or impingement during the dynamic transition. The assists primarily in the transitional and pressing phases, aiding in horizontal adduction and shoulder flexion to facilitate the shift from pull to dip. Core engagement, through the rectus abdominis and obliques, is essential for maintaining a hollow body position, controlling , and preventing unwanted swinging or arching during the entire exercise.

Biomechanical Analysis

The muscle-up is a compound movement characterized by distinct actions that facilitate the transition from a hanging position to support above the apparatus. During the pull phase, the s primarily undergo extension and adduction, accompanied by flexion, to elevate the center of mass toward the bar or rings. This phase demands coordinated upper extremity motion to generate upward . In the transition, the elbows shift from a flexed to an extended position, allowing the to pass over the apparatus, while the shoulders maintain stabilization to prevent collapse. The subsequent push phase involves shoulder extension and full elbow extension to achieve the lockout position. In kipping variations, hip flexion plays a key role, driving through a rhythmic arch-to-hollow swing that amplifies the pull without relying solely on upper body strength. Force production in the muscle-up is predominantly explosive during the concentric pull, where the upper extremities must generate forces exceeding bodyweight at peak—to overcome inertia and facilitate the transition, as observed in dynamic pulling mechanics similar to countermovement pull-ups. This requires rapid acceleration of the body mass, with peak forces occurring mid-pull to propel the hips above the apparatus level. The eccentric phase of descent, conversely, emphasizes controlled deceleration, where muscles absorb bodyweight forces to mitigate impact on the joints, promoting smooth lowering without abrupt stops. These dynamics highlight the movement's demand for both power output and braking capacity. Stability is critical throughout the muscle-up, particularly involving core engagement to provide anti-rotation that counters the rotational forces from the swing or bar contact in kipping executions. The core musculature stabilizes the against lateral deviations, ensuring efficient force transfer from hips to upper body. In the ring variation, instability amplifies demands on shoulder abduction and glenohumeral stabilizers, necessitating greater activation of surrounding muscles to maintain centering and prevent wobbling, which increases overall neuromuscular control compared to the bar version. The energy systems powering the muscle-up are primarily anaerobic, relying on the ATP-PC () pathway for the short, high-intensity burst required for a single repetition, which typically lasts under 10 seconds and demands immediate ATP resynthesis without oxygen dependence. For sets involving multiple repetitions, contributions from the glycolytic system increase to sustain repeated efforts, though the aerobic system plays a minimal role unless extended recovery periods allow oxidative recovery. This metabolic profile underscores the exercise's emphasis on explosive power over endurance.

Benefits and Considerations

Health Benefits

Incorporating muscle-ups into a regimen significantly enhances upper body strength by integrating explosive pulling and pressing actions, which develop functional power transferable to various athletic pursuits. A study comparing bar and ring muscle-ups found higher activation in key upper body muscles, such as the biceps brachii and triceps brachii, during both phases of the movement. research further supports that such bodyweight promotes and strength improvements akin to traditional resistance methods, with progressive variants showing significant increases in one-repetition maximum and muscle thickness. Muscle-ups also bolster and grip endurance, essential for maintaining midline integrity during dynamic movements and enhancing forearm resilience for everyday tasks and sports like . The exercise's demand for sustained false grip positioning elevates forearm flexor recruitment, contributing to improved as evidenced in combined aerobic-calisthenics protocols. This enhanced stability supports better postural control and reduces injury risk in functional activities. The high-intensity, compound nature of muscle-ups elevates , yielding cardiovascular benefits including improved VO2 peak when integrated into , which aids metabolic health and fat loss. Research on programs demonstrates superior endurance adaptations and aerobic capacity gains relative to non-training controls, with notable increases in peak oxygen uptake (p < 0.001). Beyond physical gains, mastering muscle-ups cultivates mental resilience, discipline, and self-confidence through progressive skill acquisition, with benefits extending to disciplines like . In patients with neuroinflammatory and rheumatic diseases such as and , exercises have been shown to positively influence psychological aspects linked to , reducing symptoms of anxiety and depression associated with these chronic conditions.

Risks and Injury Prevention

Performing muscle-ups, a compound calisthenics exercise involving a pull-up followed by a dip transition, carries risks primarily related to overuse and improper form, with studies indicating injury rates in calisthenics practitioners ranging from 27.8% to 62.4% over a 12-month period, predominantly affecting the upper body and spine through strains and tendinopathies. Shoulder strain, particularly impingement, is a common hazard during the explosive transition phase of the , where inadequate mobility or poor positioning compresses the tendons against the , leading to and in up to 23% of street workout athletes. To mitigate this, practitioners should incorporate dynamic warm-ups and mobility drills, such as band pull-aparts, which strengthen the rear deltoids and rhomboids to improve scapular stability and reduce impingement risk. Elbow and wrist issues, including tendonitis, often arise from repetitive loading and grip demands in muscle-ups, with tendinopathies accounting for 31% of injuries in calisthenics due to overuse of forearm extensors and flexors. Limiting sessions to 3-5 sets per week and employing a false grip—where the thumb wraps under the bar or rings—can distribute stress away from the wrists, though it requires gradual adaptation to avoid exacerbating elbow strain. Lower back strain frequently occurs from excessive kipping or momentum generation in muscle-ups, contributing to 18.4-19.3% of injuries via lumbar hyperextension and core instability during the pull phase. Emphasizing strict form without aggressive kipping and engaging core bracing techniques, such as hollow body positioning, helps maintain spinal neutrality and prevent these overload injuries. General prevention strategies include progressing slowly from foundational exercises like pull-ups and dips, allowing 48-72 hours of recovery between sessions to facilitate tissue repair, and consulting healthcare professionals for those with pre-existing conditions to tailor programming and avoid biomechanical vulnerabilities like those in the .

Variations and Progressions

Common Variations

The banded or assisted muscle-up uses resistance bands looped around the bar or rings and the athlete's feet or knees to provide upward support during the pulling phase, reducing bodyweight load by 20-50% depending on band thickness, making it suitable for beginners building foundational strength without full unassisted execution. This variation maintains the core movement pattern while allowing focus on technique and gradual strength gains, as recommended in programming for those unable to complete a standard muscle-up. The slow negative muscle-up emphasizes the eccentric phase, where the athlete starts from the top position above the bar or rings and lowers controllably through the transition and pull phases over 3-5 seconds, enhancing neuromuscular control and eccentric strength in the lats, , and core. This approach isolates the descent to address common weaknesses in the transition, promoting better overall muscle-up proficiency without momentum. The archer muscle-up is an advanced unilateral variation performed on rings or a bar, where one performs the majority of the pulling and pressing work while the other extends outward for balance, targeting asymmetric strength development in the lats, , and shoulders to correct imbalances and progress toward one-arm skills. It demands heightened and coordination due to the uneven loading, distinguishing it from bilateral forms. Weighted muscle-ups incorporate added resistance via a dip belt with plates or a weighted vest, typically 10-40 kg for intermediate to advanced athletes, to increase intensity and overload the pulling and pressing muscles beyond bodyweight. This progression alters leverage and requires stricter form to maintain control, particularly in the transition. Bar muscle-ups emphasize a linear pulling with hands fixed in position, facilitating higher momentum transfer during the kip and resulting in lower activation of stabilizers like the upper compared to rings. In contrast, ring muscle-ups introduce rotational instability, demanding greater forearm flexor (p=0.001) and brachii (p=0.001) engagement for grip maintenance and adduction, enhancing overall mobility and safety through freer positioning.

Training Progressions

Training progressions for the muscle-up emphasize a structured buildup of foundational strength, technique, and integration to minimize risk and ensure sustainable advancement. These progressions are typically divided into beginner, intermediate, and advanced phases, focusing on through increased volume, intensity, or specificity. Resistance training frequency is generally recommended at 2-3 days per week for novices, 3-4 days for intermediates, and 4-5 days for advanced trainees, according to guidelines from the . often incorporates deload weeks every 4-6 weeks to allow recovery. For beginners, the emphasis is on developing the primary pulling and pushing strength required for the muscle-up transition. Start with 3 sets of 10 strict pull-ups (using bands if necessary to achieve full ), 3 sets of 10 ring or bar dips, and 3 sets of 10 hanging knee raises to build . Perform these 2-3 times per week for 4-6 weeks, gradually reducing assistance as strength improves. Success in this phase is marked by completing unassisted sets, establishing a base where one can perform 5-15 strict pull-ups, which supports the explosive demands of the full movement. Intermediate trainees shift toward integrating the muscle-up through transition-focused drills. Incorporate muscle-ups (using a for assistance) and band-assisted full reps, aiming for 3 sets of 5-8 assisted variations per session, 2-3 times weekly. The goal is to achieve 1-3 strict muscle-ups without assistance, refining the false grip and hip drive while maintaining form. Track progress using apps like Hevy to log reps and monitor improvements in transition smoothness over 6-8 weeks. At the advanced level, focus on increasing , power, and to perform multiple high-quality reps. Implement volume training such as 5 sets of 5 kipping muscle-ups or explosive plyometric drills like clap pull-ups (3-4 sets of 4-6 reps), alongside negative muscle-ups (5-7 sets of 1 slow eccentric rep, 8-10 seconds descent). Train 3-4 sessions per week with periodized cycles, including a deload every 4 weeks by reducing to 50-70% of peak loads. This phase builds capacity for 5+ consecutive strict or kipping muscle-ups, enhancing overall upper-body power output.

Records and Achievements

Notable World Records

In the realm of muscle-up achievements, the recognizes several standout performances that highlight exceptional endurance, strength, and technique. One of the most notable is the record for the most muscle-ups in 24 hours (male), set at 2,150 by from the in , UK, on August 24, 2025. For weighted variations, the heaviest single repetition weighted ring muscle-up (male) stands at 51.86 kg (114.35 lbs), accomplished by Roudy Kallas from in Dbayeh, Lebanon, on August 16, 2025. This feat underscores the demand for precise control and explosive power in ring-based muscle-ups under added load. Female athletes have also set impressive benchmarks, particularly in consecutive efforts. The most consecutive ring muscle-ups (female) is 12, achieved by Amalie Gjeraker from in , Norway, on June 17, 2024. In time-bound weighted challenges, the most muscle-ups in one minute carrying a 20 lb pack is 15, performed by Ildar Yagyayev from in , , on September 15, 2024. Additionally, the most consecutive muscle-ups (male) is 56, set by Max True from in , Germany, on August 31, 2025. These records reflect the evolving standards in and functional fitness as of late 2025.

Competitive Context

The muscle-up plays a significant role in competitive , particularly in men's on the rings, where it is classified as an element in the () Code of Points, contributing to the difficulty score of routines through its execution as a transition from hang to support. In women's , variations resembling muscle-ups appear in routines as part of kipping transitions and strength elements, adding to the overall difficulty value evaluated by judges during Olympic and competitions. These elements are scored based on their technical execution and integration into the routine, with deductions for form errors impacting the execution score alongside the fixed difficulty points. In competitions, muscle-ups are a staple movement in workouts of the day (WODs) and events, such as those featured in the CrossFit Open, where athletes perform sets of ring or bar muscle-ups under time constraints to test upper-body power and endurance. Similarly, in events like the World Street Workout and Calisthenics Federation (WSWCF) Championships, established in 2011, muscle-ups form a core component of freestyle and strength categories, with competitors showcasing multiple repetitions or weighted variations in judged performances. Record organizations recognize muscle-ups across various categories, including endurance and weighted feats; for instance, tracks achievements such as the most consecutive muscle-ups and the heaviest weighted single repetition, verifying attempts through standardized protocols. The Asia Book of Records similarly documents regional accomplishments, such as the maximum muscle-ups in one hour and heaviest weighted ring muscle-ups, emphasizing feats by Asian athletes. Competitive strength sports, such as , , and fitness competitions, have seen significant increases in female participation. The pandemic accelerated the trend as people became accustomed to exercising with minimal equipment at home. Muscle-ups have also been integrated into military fitness challenges, including preparatory training for U.S. candidates, where they build explosive upper-body strength alongside pull-ups and dips in programs like those for Special Warfare. Judging criteria in these competitions enforce strict form, requiring full arm extension at the bottom, a complete press or transition above the bar or rings without partial reps, and open hip position at the top to count as valid; violations result in "no reps." Time caps are commonly applied, such as 20 minutes for sets of 30-50 muscle-ups in events, to maintain competitive pacing and prevent pacing strategies that compromise intensity.

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