BEYOND CLASSIC EVENTS: THE SCIENCE OF SPECIAL STRONGMAN EVENTS | Episode 8: Duck Walk, Between-the-Legs Load Carriage and Constrained Gait Biomechanics

Duck Walk: why a load hanging between the legs differs from Farmer’s Walk

The phrase Duck Walk can be ambiguous in strength training. In general conditioning, it may refer to a squat-position walk with deeply bent knees. In Strongman, it commonly describes carrying a heavy implement by a central handle while the load hangs between the legs, often using a T-shaped handle or plate-loaded pin. The athlete must pick up the object, walk with the legs straddling its mass, and maintain control. Its shape can force a wider stance, foot rotation or an unusual stepping rhythm. The IAWA rulebook explicitly describes one version using a loading pin with ring handle, weight suspended between the legs and a 20 m walk [1]. This is a defined ruleset, not proof that every Strongman organizer uses identical requirements.

The event must not be confused with Farmer’s Walk or Yoke Carry. Farmer’s commonly places separate loads beside the body, held in the hands. A yoke transmits weight through a frame across the back. In Duck Walk, the mass hangs between the lower limbs, making clearance space part of the movement problem. An athlete may be strong enough to raise the object yet unable to take a normal stride without colliding with the plates or frame. The task therefore combines load carriage with a constrained walking pattern imposed by equipment geometry. Some rules permit contact between the load and thighs, while other events may define floor contact differently. Technique must always be interpreted in the context of the actual rules.

Strongman Archives records Duck Walk in historical and modern competitions, including formats described by mass, distance and time [2]. Such entries do not reliably reveal the dimensions or suspension geometry of each implement. Peer-reviewed research on Farmer’s Walk and Yoke Walk can help explain gait adaptation under heavy loads, but I did not identify a comparably developed direct research base quantifying a standardized Strongman Duck Walk [3–5]. This is why we cannot responsibly invent specific adductor-force values or prescribe one ideal degree of foot turnout. We distinguish elementary mechanics, transferable findings from other carries and event-specific hypotheses.

Each step can be interpreted as a negotiation among supporting the load, shifting the centre of mass and avoiding collision with the implement. The suspended weight may sway, the hands may be loaded nearly isometrically, and the athlete may shorten steps to retain clearance. Official performance therefore depends on more than maximal strength: it requires repeating a constrained gait without loss of balance or load contact. The explanation that follows is intended to be technically rigorous without becoming inaccessible to readers who have never performed the event.

Initial pickup and implement position: geometry of a load placed between the lower limbs

The first biomechanical task in Duck Walk is lifting the implement from the floor. With a central handle above a stack of plates, the athlete may grip with both hands while the lower limbs straddle the weight. Depending on handle height and implement dimensions, substantial hip and knee flexion may be necessary in a position different from a conventional deadlift. It is not identical to a sumo deadlift merely because the feet are wide. In deadlifting, a barbell follows a relatively defined route, generally in front of the body; a Duck Walk implement may have a broad diameter, touch the thighs and place its centre of mass well below the handle. Those differences change moment arms and initial lifting demands.

Required lifting force depends on mass and vertical acceleration. A 180 kg object has gravitational weight of approximately 1,766 N. During a slow lift with small vertical acceleration, total external force at the handle is close to that magnitude. Faster upward acceleration temporarily increases the required force above mg. This does not represent the force of any one muscle or tendon; multiple joints contribute. It distinguishes pickup from later carrying, during which mean vertical acceleration over a longer interval can be small even though each step produces oscillation.

Position between the legs limits hip and knee movement space. Wide plates can force the feet farther apart than during unloaded walking. Tall plates reduce available knee flexion before ground contact. A short handle may bring the arms and hands close to the thighs. These are observable geometric constraints rather than judgments about athlete mobility. Two competitors with identical general strength but different segment dimensions may experience the same implement as different mechanical tasks.

The distance between handle and centre of mass determines another important behavior. A suspended object can sway relative to its attachment when the athlete accelerates or brakes. With a short suspension distance, oscillation amplitude and frequency may differ from a more deeply hanging load. The implement's shape and any contact with the thighs add constraints. In an elementary small-angle pendulum model, oscillation period is T = 2π√(L/g), where L is effective pendulum length. A real Duck Walk implement is not a simple pendulum with a fixed pivot: the hands move, the body accelerates, mass is distributed and collisions can occur. The equation is a first-order intuition, not a precise prescription for optimal cadence.

Handle height should not be confused with ground clearance. An athlete may have sufficient arm length to grip comfortably yet be unable to elevate the full implement far enough to avoid floor contact. Rules may permit or penalize ground contact, and dropping the load may stop the clock or require a fresh pickup. A higher carry position creates clearance but can change shoulder and trunk mechanics; a lower position may feel manageable but restrict locomotion. Neither is universally optimal without testing the implement and judging requirements.

Farmer’s Walk research provides only a bounded comparison. Winwood and colleagues examined lifting and carrying mechanics in six experienced athletes, reporting differences in force and gait characteristics relative to unloaded walking [3]. Keogh and colleagues investigated loaded walking performance and relationships among speed, step length, cadence and contact time [4]. They did not quantify Duck Walk specifically. Their findings support the general principle that heavy carrying alters locomotion, not a claim that the same numerical changes apply when the load hangs between the thighs.

In practice, assessment should start with implement geometry. An athlete can check setup with a manageable load, lift while maintaining controlled body position, and travel a short distance to observe clearance, thigh contact and stability. The implement should be specified by plate diameter, shaft length and handle thickness as well as weight. Technique that works on a compact loading pin may be unsuitable on a bulky apparatus of identical nominal mass. Geometry is part of the task rather than a minor equipment detail.

Pickup mechanics also involve trunk orientation. Keeping the load close to the body's axis may reduce some external moment arms relative to a far-forward load, but this does not mean spinal demand disappears. Trunk musculature still stabilizes movement, while a wide stance changes conditions at the hips and potentially the adductors. Direct evidence is insufficient to assign precise muscular percentages for the event. What can be said is that the central load position and restricted stepping space are distinctive features deserving study.

After pickup, the athlete must maintain ground clearance, limit uncontrolled sway and coordinate steps around an object hanging between the thighs. Completing one 180 kg lift does not guarantee the ability to carry it 20 m. The task combines grip endurance with repeatable foot contacts under unusual geometric constraints. This distinction between lift and carry should guide both evaluation and preparation.

Constrained gait: step width, centre of mass and lateral balance

Carrying a heavy mass between the legs changes the base of support compared with normal walking. To avoid collisions with plates, the athlete may widen foot placement or turn the feet outward, changing hip, knee and ankle geometry. A wider gait changes how the combined athlete–load centre of mass is supported during alternating steps. This does not automatically mean better or worse balance. More lateral room can help clearance but alter pelvic movement and the distance the centre of mass must move during each support transition. Implement shape creates a trade-off between physical clearance and locomotor economy.

During single-leg support, the body must control the centre of mass relative to the stance foot. A load hanging close to the midline changes combined mass distribution, but does not eliminate the balance problem. The athlete moves feet around the object, the torso may shift laterally, and the load may lag due to inertia. Ordinary gait adjustments become automatic through motor learning, while an unusual heavy implement can require different stepping and additional attention. No direct evidence supports a fixed number of centimetres of pelvic shift at any particular Duck Walk load.

A simple centre-of-mass calculation illustrates the principle. Suppose a 120 kg athlete carries a 180 kg implement, producing a 300 kg total system. In the vertical direction, z_total = (120z_athlete + 180z_load)/300. If the athlete's body centre of mass is assumed to lie at 1.0 m and the load's at 0.35 m, z_total = (120 + 63)/300 = 0.61 m. These are hypothetical positions ignoring posture changes and sway. They only demonstrate that carrying a major mass low can lower the combined centre of mass. It would be wrong to infer automatic stability, since support width, lateral moments and load movement are equally relevant.

Step length is constrained not just by the ability to accelerate the body but by clearance between foot and load. Very long steps can cause the knees or thighs to strike the plates, especially if the implement swings forward. Very short steps can avoid contact but reduce speed and increase transitions. Some athletes may find a combination of slightly lateral and forward movement, while others can keep a nearly straight trajectory with a wider base. Without a standardized implement and rules, one pattern cannot be declared optimal. Competition speed should be measured alongside step count, direction and contact frequency.

Farmer’s Walk provides a useful contrast. Research has demonstrated that carrying loads at the sides changes stride length and contact duration compared with unloaded walking, and faster trials can show different combinations of cadence and step length [3,4]. Duck Walk adds between-thigh geometric restrictions. Transferring numerical farmer's results directly would be unsound. High cadence in Farmer’s Walk does not establish that maximum-speed running around an implement between the legs is either effective or safe. Where each step can hit the load, movement control may matter more than maximal frequency.

Contact between the implement and thighs presents a distinct issue. Repeated plate collisions can transmit lateral impulses into the object and modify its sway. Certain rulebooks explicitly permit contact with the legs [1], but what the rules allow is not necessarily physiologically inconsequential or optimal for time. Light regular contact may be a tolerated effect of geometry; heavy unpredictable collisions can disrupt gait, cause bruising and change grip demand. Coaches should assess whether contact is controlled or consists of repeated unplanned impacts.

Carry height changes the available clearance. Raising an implement sufficiently to avoid the floor may place its mass nearer the inner thighs, while carrying it very low increases the risk of ground contact when the knees bend. Handle position and arm length limit adjustments without altering shoulder elevation or trunk posture. One technique may feel easier to a tall athlete and difficult to a shorter one, but that does not mean stature alone determines performance. Grip strength, skill and implement design can alter the ranking. Anthropometric differences should be interpreted as interactions rather than fixed verdicts.

Effective Duck Walk need not resemble aesthetically ordinary walking. Short steps, external foot rotation and asymmetrical foot placement may be legitimate if rules permit and the technique produces reliable displacement. Requiring perfectly parallel feet could increase collisions. Conversely, an excessively wide stance may fatigue the hips and limit speed. Coaches can test moderate loads under comparable conditions to identify individual patterns rather than imposing one universal stance.

Scientific gait analysis should ideally capture step width and length, cadence, stance time, pelvic lateral movement and implement trajectory. Frontal and lateral cameras provide descriptive information; three-dimensional motion capture and force platforms allow deeper assessment of external moments. Yet the large object may block markers or cameras. The method must be adapted without fundamentally changing the task. Software displaying precise angles does not ensure valid estimates when markers are occluded or the model omits the implement. Measurement validity matters more than technological sophistication.

Practical progression can separate pickup from locomotion. First, show that the implement can be lifted and held with control; then take a few steps to identify contact points; finally cover longer distances with manageable loading. This is a prudent application of specificity and progressive overload, not a Duck Walk-specific randomized protocol. Raising the weight before the movement pattern is controlled may amplify collisions without achieving useful adaptation.

Load sway and stepping rhythm: when the weight moves partly independently of the athlete

A load hanging between the legs does not necessarily follow the athlete's trajectory exactly. When the body accelerates forward, the mass may momentarily lag; during deceleration it can continue forward because of inertia. With a rigid handle, this may appear as hand rotation and shifting of the centre of mass. With a flexible suspension it may look more overtly pendular. This is a distinctive task demand because the load must be controlled dynamically rather than merely supported. An athlete who can hold the weight statically may still lose balance during abrupt acceleration.

For an ideal small-angle pendulum, angular natural frequency is ω = √(g/L), and period is T = 2π√(L/g). At L = 0.4 m, the period is approximately 1.27 s; at L = 0.7 m, about 1.68 s. These are not measurements of Strongman implements. Their suspension points move, mass is distributed, and rotation and collisions can occur. The calculations only suggest that a longer effective suspension distance may produce sway over a different timescale. They do not establish a particular stepping cadence because gait also depends on strength, clearance and stability.

Repeated handle accelerations can stimulate load oscillation. In a simple oscillating system, regular motion may increase amplitude under unfavorable timing, but actual behavior depends on damping, collisions and voluntary hand control. Claiming that every Duck Walk resonates at one cadence would be unjustified. A practical observation is that increasingly forceful thigh impacts as step frequency rises may indicate interaction between movement rhythm and load sway. Side-view video can help identify the relationship without pretending to diagnose it conclusively.

Lateral sway presents a problem separate from fore–aft movement. If the pelvis shifts sharply from one stance leg to the other, the load may begin moving across the body. Lateral impacts can rotate the handle, and trunk corrections may interact with other motions. Attempting to make the object completely motionless may consume considerable stabilizing effort without improving time. Excessive sway, however, can cause collisions and disrupt the intended path. The practical target is manageable, repeatable movement rather than an absolute demand for zero oscillation.

One possible measurement is the trajectory of the implement's lower edge relative to the torso. Lateral footage can reveal lag during acceleration, passing through the vertical and overshoot during deceleration. Frontal video can show lateral motion. Precise centre-of-mass estimates require the implement's mass distribution, while visual markers may be hidden by the athlete. When the load rotates, one point on a plate does not describe the whole object. Without calibrated measurement, descriptions should stay qualitative rather than claiming tendon-force calculations.

Grip changes can influence sway. Farmer's Walk usually involves a separate handle in each hand; Duck Walk may require two hands around one ring or short bar. Moving the hands during locomotion changes the point where force is applied and can alter orientation. Partial slipping may create a sudden movement even without dropping the object. Moderate-load practice allows athletes to establish reproducible grip before substantial fatigue. There is no direct evidence that one universal grip pattern is optimal for every implementation.

Ground collision is another special case. If a plate strikes the floor during a step, the load may decelerate suddenly while the body continues forward. This can produce abrupt moments at the hands and disrupt balance, sometimes requiring a fresh pickup. Depending on rules, contact may invalidate the attempt or merely increase time. A hard impact can also shift equipment unexpectedly. Minimum ground clearance is a real technical variable, not a cosmetic detail.

A descriptive measure might compare horizontal distance with the number of major load oscillations or significant impacts. Such a metric is not validated for Duck Walk and should not be presented as a standard. It could nevertheless help identify whether one cadence produces excessive contact while another supports smoother progress. Scientific use would require an operational definition of 'major sway,' observer reliability and association with competition performance. Otherwise a precisely displayed number may merely conceal measurement uncertainty.

Fatigue can change the balance between locomotion and stabilization. Early in an attempt, oscillation may be controlled; later, movement amplitude can increase or the athlete may widen steps to compensate. This may slow progress or create new collisions. Direct evidence is insufficient to establish whether sway necessarily rises before cadence falls or vice versa. Longitudinal observation can reveal individual patterns without converting them into universal laws. Training needs dynamic load control as well as the ability to pick up the object.

The weight between the legs is an inertial system interacting with gait, unlike a load rigidly attached to the torso. Its mechanical energy does not disappear when the athlete slows, and that energy must be controlled through contact, timing and posture. The interaction explains why two implements of identical nominal mass but different geometry can produce different performances.

Central grip and load distribution: fingers as the mechanical link

Duck Walk implements often use a short central handle, ring or closely spaced bilateral grip. Load travels through this interface to the palms and fingers, then through the arms and torso. A 180 kg load exerts approximately 1,766 N of gravitational force, but it would be incorrect to assume that each hand always bears exactly 883 N. Distribution depends on handle orientation, finger placement, body rotation and object acceleration. One hand may temporarily carry more of the load, and collisions or changes in rhythm can produce transient force changes. Without contact sensors, precise percentages would be invented.

Dynamometer grip strength reflects a general capacity rather than the whole competition task. A dynamometer measures squeezing against a standardized handle, whereas Duck Walk may require a sustained isometric hold, friction against a thick ring, wrist repositioning and rotational control. A strong handgrip score may be useful but does not guarantee successful constrained walking with a massive hanging weight. Grip type, duration and surface geometry must be distinguished. Event-like grip practice may improve specificity but should be dosed with attention to skin and tendon loading.

Wrist position can change the moment imposed by the handle. A ring gripped from below may alter finger configuration and forearm angle, particularly when the load swings. Repeated wrist deviation can affect tolerance and object control. No single wrist posture is universally available across all implements. Some handles permit a neutral grip, while others demand rotation. The relevant practical question is whether a position can be repeated under load without uncontrolled slipping or symptoms.

Forearm fatigue may develop during prolonged carrying, but decline in performance can have several causes. Finger flexors may lose tension capacity, skin contact may become painful, and oscillations can require more frequent corrections. An athlete may feel that the implement increasingly 'pulls through the hands' despite unchanged mass. Dynamic load variation from stepping can contribute to this sensation rather than a simple reduction in muscular strength. A log recording time, distance, regripping and implement type is more informative than the label 'weak grip'.

The contact force is not necessarily static even when an implement looks steady from the front. As the athlete's body rises and falls through each step, the suspended load experiences small vertical accelerations. If those accelerations are upward, hand force must temporarily exceed the object's gravitational weight; during downward acceleration, it can be lower. Lateral sway adds other force components. These fluctuations help explain why a carry can feel more demanding than a stationary hold of the same mass. Their actual magnitudes require sensors or a calibrated dynamic model, not visual intuition alone.

Farmer’s Walk offers a useful but limited comparison. In Farmer’s, each hand controls a separate lateral implement, and balanced loads can provide relatively symmetrical trunk loading. In Duck Walk, both hands may contribute to one mass moving between the lower limbs. The resultant can remain close to the body's midline, yet hand position may be narrower and shoulder organization different. An athlete who excels at heavy Farmer’s Walk may have useful capacity for Duck Walk, but transfer is not guaranteed. General strength supplies resources; equipment geometry and technique determine their expression.

A research protocol could measure static grip endurance separately from dynamic carry. Using the actual handle, a controlled static hold could show how long a load is supported without stepping. A short walk would then reveal what happens as oscillation and contact changes are introduced. If the athlete maintains a long hold but drops during movement, dynamic control may be limiting. If the load cannot be held even statically, grip capacity or overall strength may require priority. These are practical hypotheses rather than definitive physiological diagnoses.

Grip contact has material properties. Steel, textured metal, smooth coatings and rusted surfaces may produce different friction and skin pressure. Handle diameter changes finger wrap and the ability to establish a secure hold. Moisture or chalk use, where permitted, may alter contact. A large hand does not automatically guarantee better performance on every handle because wrapping geometry and local pressure differ. Standardized research should document handle construction and surface condition rather than treating all objects of the same mass as equivalent.

The difference between slipping and deliberate readjustment should also be recorded. A competitor may shift the hands to recover control without losing the load, while another experiences involuntary movement of the handle. Both may appear as 'regripping' on video, but represent different technical events. An operational definition can classify controlled hand repositioning, observable handle slip and complete loss of contact. Such classification would support repeatable training decisions without pretending to measure unobserved tendon or finger forces.

Programming needs balance. Heavy holds, rows and carries may already provide substantial forearm loading within a Strongman week. Adding maximal Duck Walk work repeatedly could accumulate stress faster than technical quality improves. A useful approach includes manageable carries with reliable contact and carefully spaced heavier exposures rather than every session ending in skin damage or total grip failure. The exact number of sets is individual and has not been established by event-specific randomized trials.

The scientific contribution of separating grip from locomotion is that improvement can be attributed more cautiously. If stationary holding capacity rises while walking time remains unchanged, the limiting factor may lie in step geometry or oscillation. If walking improves without a larger static hold, motor learning or efficiency may contribute. These patterns do not prove causality in a single athlete, but they generate better tests. Duck Walk rewards the ability to retain contact while the whole body and load are moving, not merely the ability to squeeze a standardized device once.

Physiology of central-load carriage: isometric holding, propulsion and coordination

Duck Walk combines near-continuous hand support of a large weight with repeated steps moving the athlete forward. Finger flexors must maintain contact while the legs provide propulsive impulse. Trunk muscles contribute stabilization and sway control, while hip and knee musculature works through positions that can differ substantially from ordinary walking. These simultaneous demands increase physiological complexity. However, direct research does not justify assigning exact percentages of energy expenditure to forearms, legs and trunk. Such a partition would require advanced measurements and validated models.

A twenty-metre event may last very different amounts of time depending on load and athlete. A rapid race demands intense force production and stepping rhythm, while a heavily interrupted attempt may include long intervals of isometric tension without progress. Phosphocreatine, glycolytic and oxidative pathways contribute according to intensity and duration. All Duck Walk efforts should not be classified rigidly as belonging to one energy system. If grip fails while the lower limbs retain substantial force capacity, the limiting factor can be local and mechanical rather than inadequate general cardiovascular conditioning.

A wide stance and short steps may alter the mechanical cost of movement. Greater lateral pelvic displacement or a chronically flexed knee position can place different demands on muscles compared with unloaded walking. This does not prove that every wider stance creates a fixed increase in calories consumed. The relationship depends on load, speed, distance and individual movement. Farmer's and Yoke research shows altered gait with loading, but does not establish the metabolic cost of a competitive Duck Walk [3–5].

Fatigue may degrade coordination between stepping and load oscillation. An athlete who begins with steady cadence can slow after several metres while plate contact with the thighs becomes more frequent. Possible causes include reduced lower-limb force, less secure grip, changed posture or several interacting factors. Interpretation requires caution: shorter steps may be a deliberate adaptation to fatigue rather than a simple technical error. Logging sector times, step counts, contact events and regrips helps identify individual patterns.

A further consideration is mechanical work during lateral stabilization. The athlete may perform internal muscular work to restrain trunk and pelvic movement even when the load's horizontal displacement is small. External gravitational work over a level course does not capture that cost. A heavy hanging weight can be supported isometrically while legs move it through space. Therefore the physiological demand cannot be computed by multiplying the load's gravitational weight by the horizontal distance. A 200 kg carry over twenty metres does not imply 200 × 9.81 × 20 joules of vertical lifting work. The direction of displacement matters.

At the same time, an ideal model that predicts zero net gravitational work on a level course is not a prediction of zero muscular work. The body and implement oscillate vertically, muscles contract to stabilize, and repeated stance phases require force production and control. These processes have metabolic costs not directly equal to the difference between initial and final potential energy. Clear separation between net external mechanical work and physiological expenditure avoids misleading statements about the event's energy cost.

Recovery depends on total training workload. Deadlifts, Farmer's, Yoke and other carries may already tax grip and trunk heavily. Adding many maximal Duck Walk sets can increase cumulative stress without proportionate skill benefits, especially if the geometry causes repeated impacts and bruising. A useful program alternates general strength work with controlled specific exposure and monitors recovery. No universally validated weekly Duck Walk volume exists. Individual tolerance, training history and competition frequency should determine dosing.

The presence of grip and gait limitations also changes how athletes should interpret failed attempts. If the implement is dropped suddenly without a clear deterioration in steps, grip contact may be limiting. If the athlete can hold the mass while stationary but struggles to move the feet around it, gait geometry or dynamic balance may deserve attention. If locomotion begins well and progressively slows, endurance or movement economy may be involved. None of these observational categories proves a single underlying muscular cause, but each points toward useful tests.

Near competition, overly long heavy warm-ups may fatigue grip and hips, while insufficient familiarization can leave the athlete unprepared for equipment geometry and oscillation. Brief controlled movements with the actual implement may help restore technique at an acceptable fatigue cost. That is a general principle of specificity and fatigue management rather than an event-specific randomized protocol. The objective is readiness for the task rather than demonstrating maximum training effort during the warm-up.

Surface and footwear influence physiological demand indirectly. A stable nonslip floor permits more reliable stepping, while soft or uneven terrain can force additional balance corrections. Repeated slips may increase muscular effort without equivalent forward progress. The athlete's perceived exertion can consequently rise even when the time is poor. Such observations should be kept separate from claims about energy-system dominance, which require physiological evidence.

Body mass and equipment height can also change apparent effort. A heavier athlete may possess greater absolute strength but also move more body mass with every step. A shorter athlete may need additional clearance strategies, while a taller one may face different hip positioning. None of these effects can be condensed into an automatic ranking. Research must test interactions, and coaches should avoid interpreting one anthropometric variable as a complete explanation of performance.

Duck Walk is best viewed physiologically as a test of sustained hand contact and repeated steps under posture constraints. No single measure captures all demands. Grip capacity, time, load mass, cadence and sway describe distinct components. Combining them produces a richer analysis than attributing every success to 'leg strength' or every failure to 'poor cardio'.

Event-specific hazards: thigh impacts, hip demands and loss of control

Duck Walk deliberately places substantial load in the narrow space between the legs. Its contact hazards differ from Farmer’s Walk, where loads are carried to the sides. Plates or the implement body may strike thighs, knees or lower legs during movement. Light contact may be accepted under particular rules, but repeated impacts at high loading can cause bruising, pain and involuntary gait alteration. If a collision destabilizes the athlete, grip may experience abrupt load changes and sway can increase. Sporting permission and individual mechanical risk are not identical.

Lower-limb posture may load the hips differently from ordinary walking. Clearance can require a wider base and outward foot rotation, creating specific demands for adductors, abductors and pelvic-control muscles. No evidence establishes one exact foot angle that causes injury or one universally safe width. Risk depends on individual capacity, mobility, load, volume and prior symptoms. A stance appropriate for a narrow implement may be inadequate for a broad one. Coaches should analyze actual geometry rather than force athletes into an arbitrary standardized posture.

The lumbar region can be stressed during pickup and during stabilization as the hanging load moves. Keeping mass near the midline does not eliminate all spinal moments, but modest trunk flexion should not automatically be declared harmful without context. Video reveals posture changes, not precise intervertebral compression force or diagnosis of injury. When meaningful symptoms develop, clinical assessment is distinct from gait technique analysis. Turning a visible angle into a medical certainty exceeds what the evidence supports.

Ground contact can create abrupt mechanical disturbances. If a plate strikes the floor while the athlete keeps advancing, the load decelerates sharply and contact force at the handle can change, potentially causing slipping or unexpected upper-limb movement. Trying to recover with a sudden step can place the feet uncomfortably close to the implement. The apparatus must be constructed so that normal anticipated contact does not release components. Plates, collars and stops need inspection, while handles must be free of cracks, dangerous deformation and cutting surfaces. Loose parts can make an implement hazardous even below maximal loading.

The IAWA rules describe a version requiring the athlete not to set the load down before completing the distance [1]. Other contests may permit repicks or score distance within a time limit. These distinctions matter for exposure and abandonment. A competitor losing grip should not be expected to catch a massive falling implement from an unstable position if this puts the legs in danger. Organizers should define the drop zone and keep helpers and spectators clear. Retrieval should begin only after the object's movement has stopped.

Floor conditions influence safety and performance. Uneven ground increases the likelihood of plate contact, while slippery surfaces can destabilize the widened steps used for clearance. Narrow courses can prevent the athlete from placing the feet far enough apart. Preparation requires checking the route and using appropriate footwear; a solution suitable for dry asphalt may not transfer to wet grass. Organizers need enough clearance and an exclusion zone around athletes, especially where heavy implements can be dropped unexpectedly.

Another concern involves the equipment's centre of mass. Improperly secured plates can shift or tilt under repeated impacts, changing the object's behavior from one step to the next. A loading pin that carries uneven plates may produce unexpected rotational moments. Such mechanical problems should be corrected before the attempt rather than left to the athlete to compensate through grip strength. Competitors can expect difficult equipment in Strongman, but not an apparatus with uncertain structural integrity.

Handle surface matters for hand safety. Sharp welds, burrs, deteriorating coatings or rough edges can damage skin under high grip tension. Conversely, a very smooth handle can increase slipping, especially with perspiration. There is no universal material that guarantees both protection and maximum friction under all conditions. A suitable handle needs structural integrity and sufficiently predictable contact, with permitted grip aids governed by the particular rules. In competition, organizers should try to offer consistent equipment conditions across athletes.

Fatigue can progressively undermine control. Increasingly hard thigh impacts, unplanned regrips or repeated stumbles may indicate that the athlete can no longer manage the load effectively. Simply increasing weight in this state can magnify the problem. Reducing load or distance and returning to controlled movement may support better learning. Severe acute pain, numbness, sudden strength loss or other concerning symptoms require stopping and appropriate assessment. Repeatedly creating bruises is not a scientifically defensible measure of mental toughness.

Warm-up has a role in safety. The athlete should understand how the implement moves, how high it must be raised for ground clearance and how feet can pass beside the load. This can be learned with manageable weights without repeated near-maximal attempts. A change from a compact implement to a wide one may require new movement preparation even when the official weight is familiar. Familiarization is a motor-control process, not merely a way to raise body temperature.

Staff positions matter. An official judging whether the load touches the ground should observe from a location clear of the athlete's stepping path and anticipated drop area. Helpers should not reach under an implement while the competitor is still moving. A stopped heavy object may remain unstable if plates are stacked high or positioned unevenly. Clear communication and a defined recovery procedure reduce the chance of preventable incidents.

A surface should also be suitable for dropping the implement if the athlete loses control. Hard ground may transmit substantial impact to plates and fittings. Soft or uneven ground can allow the load to tip or roll. The appropriate landing strategy depends on equipment design and local rules; no universal mat thickness can be prescribed without examining mass, height and structure. Qualified event organizers should assess those conditions before the contest.

In training, heavy Duck Walk attempts should be interpreted against fatigue from other events. An athlete who has performed numerous carries or deadlifts may enter the session with substantial grip and hip fatigue, making a between-the-legs implement more difficult to control. That does not permit calculation of individual injury probabilities, but justifies caution at limit loads. Retrospective Strongman injury reports, including Winwood and colleagues' study, cover the sport broadly and do not provide Duck Walk-specific incidence [6]. Inventing percentages would be unsound. Identifying hazards and documenting exposure is a scientifically defensible first step.

Risk management must balance inherent task difficulty with avoidable defects. The objective is not to remove every muscular demand from the event. It is to prevent failures of equipment, environment and organization from becoming additional uncontrolled tests. A challenging lift with an inspected implement, clear rules and adequate space is different from one performed with loose plates or an unsafe handle. Athletes should be judged on their strength and control rather than on their willingness to ignore hazardous apparatus.

Duck Walk programming: general strength, implement control and gait economy

Duck Walk preparation requires more than increasing the deadlift. The athlete needs sufficient strength to pick up the load, grip capacity to retain it and the ability to walk around it without substantial time loss or loss of control. These capacities overlap but are not interchangeable. A competitor may lift a loading pin easily yet lose seconds through over-wide steps and repeated collisions. Another may move well with moderate loads but be unable to initiate a maximal event. Training should identify whether limitation occurs before the first step, during acceleration or late in the course.

General lower-limb and trunk strength can be developed through established resistance training, while grip can be trained through dosed carries and holds. Exact transfer to Duck Walk has not been established through substantial event-specific intervention research. The ACSM's 2026 resistance-training position stand provides broad principles for muscular adaptation [7], not a universal prescription of sets, distances and kilograms for this event. A rigid formula described as scientifically proven specifically for Duck Walk would exceed the evidence. Programming should combine mechanical reasoning, athlete experience and repeatable performance assessment.

Wider-stance lifting exercises can build strength at relevant joint angles but may not reproduce implement shape or restricted stepping. Squats, deadlifts and other carries provide general resources, while event practice develops clearance and sway control. Training exclusively with a compact kettlebell can underestimate the geometric challenge of a wide plate-loaded apparatus. Conversely, attempting an extremely heavy loading pin before the athlete can step with control may add unnecessary exposure. Equipment should be chosen to address an identifiable goal rather than to display the largest weight.

One practical progression begins with pickup setup, short lifts and controlled holds, followed by walking with a weight that allows adequate clearance. Distance or mass can then increase gradually, without needing to escalate both aggressively during the same session. Competition simulations can follow, using relevant time limits and course geometry without every repetition being maximal. This is an application of progressive overload and specificity, not a directly validated Duck Walk protocol. Experienced competitors may need different stages according to existing skills and calendar constraints.

When startup is limiting, coaches can examine handle height, extension capacity and grip before adding more walking volume. If the load lifts easily but is dropped after several metres, holding endurance and contact control deserve attention. If grip remains secure but feet strike the plates, gait geometry and coordination are more relevant. If speed falls only late in the course, repeatability and fatigue require assessment. Treating all of these patterns by adding deadlift sets ignores the event's defining features.

Programming must account for skin, hip and trunk stress. An athlete already completing heavy Farmer’s, Yoke and Deadlift sessions may have high forearm and lower-limb loading, while Duck Walk adds collision exposure and unusual stance requirements. Coaches should track performance and recovery together. Sessions repeatedly causing severe bruises or uncontrolled handle slips do not necessarily provide a productive skill stimulus. Lower loading with precise movement may sometimes offer better technical learning than maximal weight with minimal displacement.

Hip-muscle accessories can be chosen based on observed limitations, but isolated activation should not be confused with event performance. Adductors and abductors help control a wide stance, yet an adduction machine does not reproduce alternate stepping with a central load. Strong isolated hip adduction may coexist with poor step timing. Conversely, improved carry speed may reflect learning and equipment familiarity without detectable hypertrophy. Performance on the real implement remains the relevant test.

A training block emphasizing grip endurance could include controlled holds, moderate carries and gradually longer timed exposures. A block emphasizing pickup might prioritize lifting strength in a geometry close to competition, while maintaining enough walking practice for skill retention. A block emphasizing speed could use lighter event loads to work on step efficiency and minimal unnecessary sway. These are plausible options rather than mutually exclusive categories. An athlete may require more than one capability, and periods can overlap.

Load progression should be expressed precisely. A twenty-kilogram increase in nominal mass does not have identical difficulty across implements with different plate diameters or handle heights. A new implement may require a familiarization phase even at a familiar weight. Rather than assuming linear progression, coaches should observe whether clearance, grip and cadence remain consistent. If increasing weight causes abrupt deterioration, the athlete may need intermediate steps or a different task emphasis.

Specificity also involves rules. A timed twenty-metre race where the athlete may repick a dropped implement creates different pacing from a format in which the load must never touch the floor. Training should mirror the actual scoring condition when the competition approaches. Practicing allowed recovery procedures at safe loads can be useful, but attempting to catch a falling heavy object in an unsafe position is not appropriate training. Athletes should understand when a repick is allowed and how officials define completion.

Near competition, familiarity with plate diameter, pin length and handle texture can prevent technical surprises. If the event apparatus differs from the gym version, several controlled submaximal attempts may help establish foot width and clearance. Immediately testing a maximum in warm-up is not automatically useful. The objective is sufficient technical readiness without exhausting grip and legs. No evidence establishes one universally optimal number of Duck Walk warm-up attempts.

A longer-term log can record mass, distance, time, number of steps, floor contacts, major thigh collisions and regrips. Changes in implement and surface should also be noted because they may explain performance variation. Faster completion through fewer collisions may reflect motor learning more than maximal strength gains. Raising load without deteriorating gait may reflect broader support capacity. These are hypotheses to be evaluated across repeated sessions rather than conclusions from one record.

Training should not reward suffering for its own sake. Heavy implements may be uncomfortable, but pain and repeated tissue impact are not necessary proofs of effective adaptation. A coach can preserve the event's demanding nature while using controlled loading, reliable equipment and opportunities for recovery. The goal is not to remove all difficulty but to direct difficulty toward useful capacities. An athlete should finish training more capable of performing the event, not merely more tolerant of accidental collisions.

Cross-training has value when its boundaries are clear. Farmer's carries can support grip and loaded locomotion, Yoke can develop heavy stepping under a different load distribution, and hip-strengthening exercises can improve general capacity. None replicates central-implement clearance exactly. If time and equipment are limited, a well-designed combination may maintain fitness while occasional specific sessions teach the distinctive motor skill. The importance of each component depends on which limitation is currently observed.

Monitoring should avoid over-interpretation. A faster time after changing to narrower plates may be an equipment effect; a better grip after using permitted chalk may be a contact effect; a smoother gait after several sessions may be familiarization. All are relevant to event performance, but they should not automatically be attributed to new muscle mass. Separating technique, equipment and capacity produces more informative coaching decisions.

The purpose of preparation is to turn an awkward heavy object into a controllable locomotor task. Strength, grip and gait must function as one system, yet can be assessed separately when performance stalls. Duck Walk can provide an unusual and demanding Strongman stimulus, but progress is not synonymous with tolerating repeated impacts. A fast, controlled attempt depends on keeping the implement's trajectory manageable and repeatedly placing the feet around its geometry.

Measuring Duck Walk: beyond finishing time and nominal load

Official Duck Walk scoring may involve time over a set distance, total distance inside a limit, or finishing order in a medley. Mechanical analysis needs additional information about pickup, stepping and implement behavior. Two equal-mass attempts may have identical completion times even though one includes slow pickup and fast walking while the other starts easily and then struggles with locomotion. Without phase separation, a coach might prescribe more deadlift strength to an athlete whose actual limitation is load sway. Pickup and carrying should be measured as related but distinct components.

A basic filming protocol can define start as the official command, pickup as the instant the full load leaves the ground and locomotion as the phase following the first step. Markers every five metres allow split times. Lateral video reveals approximate ground clearance and fore–aft sway; frontal footage shows stance width and lateral collisions. Step-count conventions must be consistent: one 'step' can mean one foot contact, whereas a complete gait cycle includes the corresponding bilateral sequence. Confusing the definitions can artificially double the reported frequency.

Step length can be estimated from positional markers, but oblique or lateral movement must be considered. When athletes move the feet in a zigzag pattern around the object, foot travel can exceed horizontal progress of the torso. Multiplying step count by a length estimated from side-view footage may be misleading. Three-dimensional analysis would describe components more accurately but needs calibration. Field measurement is more credible when it reports mean section velocity and observable foot patterns instead of falsely precise unvalidated kinematic variables.

The frequency and severity of implement–leg contact are relevant. A light touch may be visible, but impact force cannot be calculated accurately from ordinary video. A stronger collision may produce obvious load deviation, yet actual force depends on mass, velocity and impact duration. Advanced investigation might use properly attached implement accelerometers and high-speed cameras, but added sensors must not change balance or create hazards. For coaching, consistent descriptive coding of major contacts can be useful if it is not presented as a validated impact-force measurement.

Sway could be characterized by angle relative to vertical and lateral centre-of-mass displacement. But a large implement can rotate independently of its handle. One marker on a plate may record plate rotation rather than the true centre-of-mass trajectory. Nonuniform loading also produces behavior different from a simple pendulum model. Researchers should specify which point was tracked and what assumptions were used. Without this, a polished oscillation graph can convey misleading certainty.

Grip force might be measured using an instrumented handle, but adding sensors must be checked for effects on grip thickness and shape. If instrumentation changes hand positioning, the outcome may no longer represent the competition implement. External dynamometry before and after the event can describe changes in squeezing capacity but does not directly measure handle force during walking. A lower post-event score may indicate local fatigue yet cannot alone diagnose the limiting mechanism. Contact behavior, regrips, performance and symptoms should be interpreted together.

Comparable testing requires stable surface, implement and warm-up conditions. Switching from a wide object to a narrower one can reduce time through improved clearance alone. Changes in handle texture can alter grip independently of muscle capacity. Different course lengths or floor irregularities compromise comparison. These conditions should appear in a log even when not represented by numerical indices. Measurement context is part of interpretation.

Longitudinal analysis may indicate what changes. Faster pickup with unchanged walking suggests improvement in initiation without equivalent gait adaptation. Fewer collisions accompanied by faster completion suggests more effective implement control. Higher maximal hold capacity without better speed under a fixed load could mean coordination remains limiting. These patterns are hypotheses guiding training rather than causal conclusions from one comparison. Useful science distinguishes observed changes from demonstrated mechanisms.

A future research program could recruit athletes of different experience levels, sexes and body-size categories, using implements with standardized masses and dimensions. Repeated submaximal trials over a fixed distance could examine step mechanics and load sway. One experiment might change plate diameter while holding mass constant to assess clearance constraints. Another might alter the vertical position of the load's centre of mass while keeping other conditions similar. All tests require safe loading and avoidance of unnecessary repeated maximal attempts.

The research should report differences within individuals as well as group means. An athlete with unusual hip geometry may use a wider stepping pattern effectively, while another may benefit from a compact stride. Averaging them into one 'ideal stance' could conceal important information. Technical experience also matters: an expert may have less room for immediate familiarization gains than a newcomer. These details should be included when evaluating training interventions.

Even the definition of failure deserves care. If an implement touches the floor briefly, one organizer may treat the event as failed while another allows continued carrying. Researchers who count all uninterrupted forward progress as successful may classify attempts differently from competition judges. Validity criteria should be recorded and consistently applied. Separate reporting of mechanical progress and official scoring can avoid confusion.

The influence of surface should also be examined. A narrow, hard course differs from turf with uneven resistance, even if the same object is carried. Surface changes can affect foot slip and the probability of the lower plate striking the ground. A controlled laboratory setup may improve measurement reliability but fail to reproduce outdoor competition conditions. Field studies improve ecological relevance while increasing uncontrolled variation. Combining both approaches may provide stronger understanding than relying entirely on one environment.

A useful intervention study would compare technical practice emphasizing clearance and sway control with general carry training, while keeping overall training load comparable. Repeated measurements could determine whether improvements exceed simple familiarization. But such a study would need adequate sample sizes or transparent individual data, appropriate statistical analysis and careful description of apparatus. Even a positive result would apply first to the tested population and configuration rather than automatically to every Strongman competitor.

The larger scientific contribution would be separating muscular adaptation from learning an unfamiliar constrained gait. During early sessions athletes may become faster simply through familiarity with the implement, without substantial muscle growth. Later improvement may depend more on force capacity, grip or fatigue tolerance, although the mechanisms remain intertwined. Repeatable measurements and uncertainty reporting provide more information than one spectacular attempt. Duck Walk is a productive research topic precisely because many of its distinctive mechanical questions still lack direct experimental answers.

A numerical thought experiment: 190 kg between the legs and twenty metres of walking

Consider a 130 kg athlete carrying a 190 kg implement, giving a combined athlete–load mass of 320 kg. Gravitational force on the load is mg = 190 × 9.81 ≈ 1,864 N. This does not mean each arm permanently develops exactly 932 N, because load distribution between hands and object acceleration can change. In an ideal stationary hold, total vertical contact force approaches the load's weight. During walking, sway and changing support affect instantaneous values. All figures here are hypothetical, not athlete measurements.

Suppose the athlete's body centre of mass is simplified to 1.0 m above the floor while the implement's is 0.30 m. The combined vertical position is z = (130 × 1.0 + 190 × 0.30)/320 = 187/320 ≈ 0.584 m. Raising the implement centre to 0.45 m while keeping the body's posture unchanged gives z = (130 + 85.5)/320 ≈ 0.673 m. The difference is about nine centimetres. It does not establish which carry is safer or faster. Lower centre of mass affects some stability conditions, but stance width, lateral movement and leg clearance remain important. In reality, raising the load would probably change body posture as well.

Compare two simplified gait strategies. With mean step length 0.45 m and frequency 1.5 steps per second, speed is 0.675 m/s. Over twenty metres, ignoring pickup and acceleration, theoretical travel time is 20/0.675 ≈ 29.6 s. If cadence rises to 1.8 steps per second but step length falls to 0.32 m because of clearance constraints, speed becomes 0.576 m/s and twenty-metre time approximately 34.7 s. Higher cadence produces a worse time when the loss in useful step length is sufficiently large. These numbers illustrate a relationship; they are not Strongman norms.

Adding three seconds for pickup in both cases gives crude total times of approximately 32.6 and 37.7 s, still neglecting other transitions. Real performance may differ because acceleration is not instantaneous, the implement can collide with the leg or regripping can create pauses. To test whether a 0.45 m step is superior for an athlete, repeated trials should use the same load and course while recording sway and impacts as well as cadence. One equation provides an interpretation framework, not direct evidence for a universally superior technique.

A simplified sway model adds another dimension. If the object behaves roughly as a pendulum with effective length L = 0.5 m, small-angle period is T = 2π√(0.5/9.81) ≈ 1.42 s. With L = 0.3 m, period is approximately 1.10 s. These values do not prescribe stepping rhythm. The pivot moves with the athlete, the implement has distributed mass, and collisions can occur. The calculation merely demonstrates that suspension geometry can alter oscillation dynamics and should be documented when comparing equipment.

For pickup, raising the centre of mass of the 190 kg implement by 0.4 m increases gravitational potential energy by ΔU = mgΔh ≈ 190 × 9.81 × 0.4 = 746 J. This is not total metabolic energy expenditure or internal work from body movement. During subsequent level-ground carry, the net change in the load's gravitational potential energy may be close to zero if starting and finishing heights match, although the athlete can experience substantial effort. Net external mechanical work and metabolic cost must remain distinct.

The calculations suggest practical questions. If pickup is slow but walking is fast, initiation may need attention. If the athlete lifts easily but travels slowly, step length, collisions and sway deserve analysis. If grip fails halfway through, contact endurance may be limiting. If the load repeatedly strikes the ground, clearance and apparatus geometry need examination. A table listing only weight and total time cannot distinguish these mechanisms, whereas a phase-specific recording can.

Historical comparisons are similarly dependent on equipment. A 190 kg load carried on a long narrow pin is not mechanically identical to 190 kg spread across broad plates. If one allows longer steps, differences in time may partly reflect geometry rather than strength alone. Records remain legitimate within their own rules, but cross-event biomechanical comparisons require more detailed apparatus information. Documenting implement construction would substantially improve Strongman performance archives.

These examples should not be turned into a universal predictive calculator. The formulas rest on simplifications, including constant step frequency and idealized sway. Actual contact forces vary, the body changes posture and the athlete may adjust technique deliberately. A model is valuable for generating testable hypotheses, not for declaring a technique correct for every competitor.

Duck Walk is especially informative because the implement interferes directly with normal gait. The object does not merely add mass to the body's support system; it occupies the space through which the feet and legs must travel. Performance therefore depends on physical clearance as well as support capacity. That distinction explains why a competitor can excel at general loaded carrying and still require substantial technical adaptation to a central suspended object.

Competition tactics, historical comparisons and conclusions

In a timed Duck Walk, athletes must decide how to execute the initial pickup and how aggressively to begin moving. A very rapid pickup may save time but create substantial load sway, making the opening steps unstable. A more controlled start may produce a better load trajectory but consume valuable seconds. No direct study establishes one universally superior approach across all masses and implement dimensions. The sensible tactic is to test how pickup influences the first steps, not simply maximize the speed of the initial lift in isolation.

Rules allowing a load to be set down and picked up again create different choices from a format in which any floor contact invalidates the effort. A planned regrip might be useful under one ruleset and costly under another. In combined events, Duck Walk may precede Power Stairs or another carry, making grip and pacing relevant to the following phase. Without the exact rules, it would be inappropriate to recommend setting down the load or continuing despite unsafe loss of control. Judging criteria must be understood before warm-up.

Historical records use the name Duck Walk for varying implements and formats. Kilograms alone do not describe plate width, pin length, handle height and the stance required. Completion time alone does not show whether pickup was difficult or collisions delayed walking. Archives preserve legitimate sporting outcomes, but biomechanical comparisons need additional metadata. Explaining context does not diminish records; it clarifies the task each athlete overcame.

Economy of corrections is another strategic issue. Holding the load perfectly motionless may consume unnecessary stabilization effort, while a small controlled oscillation may be tolerable. But when sway grows enough to cause repeated leg or ground impacts, that apparent economy disappears. No universal threshold for ideal sway amplitude exists. Coaches can track rhythm consistency and major contact events without turning technique into an aesthetic contest. Effective carrying is sufficiently controlled to permit fast, valid displacement.

Conclusion: the challenge lies in the space between the legs

Duck Walk seems simple until implement geometry forces the athlete to abandon ordinary gait. The load hangs neither beside the body nor on the back. It occupies the space through which the legs must move. The athlete must pick it up, support it through a central handle and repeat steps compatible with ground clearance, plate width and sway. General strength is necessary but insufficient. Coordination and control are part of performance rather than incidental details.

Mechanically, the event joins several interdependent systems: the body's centre of mass, the implement's centre of mass, lower-limb joints, foot–ground contact and the hand grip. Changing one part may alter the others. Longer steps may increase speed but raise collision risk; carrying higher can improve clearance while changing balance; stronger grip may allow longer holds without automatically solving inefficient stepping. Training should address the dominant limitation observed on the actual implement.

Direct Duck Walk research remains much less developed than the literature on Farmer’s Walk and Yoke. That gap does not justify invented muscle-activation percentages or exact optimal joint angles. Elementary biomechanics can instead generate testable hypotheses, while filming and instrumentation can examine them under repeatable conditions. Future studies should document implement geometry, load trajectory and athlete gait, including anthropometric differences and safety constraints.

A larger lesson applies beyond Duck Walk. The placement of a load determines which movement solutions remain available. The same mass can create a different task when carried at the sides, above the shoulders or between the legs. Strength training becomes more specific when this geometry is acknowledged instead of assuming that kilograms alone define difficulty. Athletes and researchers can then distinguish general force capacity from the motor skill needed to use that capacity.

For athletes, the key principle is combining force with adaptation to mechanical constraints. Pickup, transport and judged completion should be treated as separate phases, each capable of limiting the result. Intelligent preparation uses progressive loads, implement familiarization and repeatable observations rather than only maximal attempts. Duck Walk shows that Strongman's challenge depends not only on how much weight is carried but where that weight is positioned relative to the body.

Individual variation and the limits of one ideal gait model

Two athletes of similar height and maximal strength may perform very differently in Duck Walk. Limb proportions, hip geometry, hand dimensions, experience with central loads and ability to control sway interact. One competitor may use very short wide steps, while another moves more efficiently with moderate stance width and a controlled pelvic rhythm. Neither pattern is universally correct. Optimization must be evaluated on the actual implement through repeatable performance.

Biomechanical models also depend on which variables researchers choose. Measuring only mean speed may ignore collisions and grip stress. Measuring only sway may reward an excessively slow technique that keeps the implement almost motionless. Counting only steps may overlook their direction and actual progress. Useful assessment combines official performance with step length and frequency, contact events, ground clearance and grip reliability rather than forcing all variables into an artificial single score.

Early improvement can come from learning where to place the feet around the load. Such progress is genuine but does not prove hypertrophy or increased maximal strength. Later gains may involve strength, coordination and effort tolerance, yet their proportions cannot be deduced from time alone. Future studies need familiarization trials and transparent reporting of individual variation.

For coaches, the most valuable question is not which technique the world's strongest competitor uses, but which factor prevents the individual athlete from moving safely and faster. If geometry is limiting, foot placement deserves attention. If grip slips, contact capacity is relevant. If fatigue dominates, repeatability and recovery may need adjustment. If the apparatus is defective, the answer is repairing it, not adding accessory exercises.

References and verifiable sources

[1] International All-Round Weightlifting Association. IAWA Rule Book, F33: Duck Walk, including loading-pin grip, 20 m course and judging conditions. Open source

[2] Strongman Archives. Event catalogue: Farmer's Walk, historical Duck Walk results and implement descriptions where available. Open source

[3] Winwood PW, Cronin JB, Brown SR, Keogh JWL. A biomechanical analysis of the farmer's walk, and comparison with the deadlift and unloaded walk. International Journal of Sports Science & Coaching. 2014;9(5):1127–1143. DOI 10.1260/1747-9541.9.5.1127. Open source

[4] Keogh JWL et al. A Preliminary Kinematic Gait Analysis of a Strongman Event: The Farmers Walk. Sports. 2014;2(1):24–33. Open source

[5] The Biomechanical Characteristics of the Strongman Yoke Walk. Frontiers in Sports and Active Living. 2021;3:670297. DOI 10.3389/fspor.2021.670297. Open source

[6] Winwood PW, Hume PA, Cronin JB, Keogh JWL. Retrospective Injury Epidemiology of Strongman Athletes. Journal of Strength and Conditioning Research. 2014;28:28–42. DOI 10.1519/JSC.0b013e3182986c0c. Open source

[7] Currier BS et al. ACSM Position Stand: Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults. Medicine & Science in Sports & Exercise. 2026;58(4):851–872. Open source

[8] Hindle BR, Lorimer A, Winwood P, Keogh JWL. The Biomechanics and Applications of Strongman Exercises: A Systematic Review. Sports Medicine - Open. 2019;5:49. Open source

[9] OpenStax. University Physics, Volume 1. Centre of Mass; Simple Harmonic Motion and Oscillation. Elementary theoretical models, not empirical Duck Walk measurements. Open source