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Agility

Agility is the quality or state of being agile, defined as the ability to move quickly and easily with nimbleness and dexterity.^[1] In physical terms, it encompasses the capacity for rapid whole-body movements involving changes in velocity or direction, often in response to external stimuli, and is fundamental to activities requiring speed and control.^[2] This attribute integrates components such as balance, strength, coordination, and perceptual-cognitive skills, making it a key element in athletic performance and daily mobility.^[3]^[4] Beyond the physical realm, agility extends to cognitive and organizational contexts, where it denotes quickness in thinking, adapting, or responding to challenges. Mental agility, for instance, refers to the power to process information and draw conclusions rapidly, enhancing problem-solving in dynamic environments. In business and management, agility describes an organization's ability to sense internal or external changes and respond effectively to deliver value to stakeholders amid uncertainty. This concept gained prominence in the late 1990s and early 2000s, evolving from manufacturing and software development practices that emphasized flexibility over rigid planning.^[5]^[6]^[7] The term's applications span diverse fields, from sports training—where agility drills improve reaction times in disciplines like soccer and basketball—to enterprise strategies that promote iterative processes and cross-functional teams for faster innovation. In software development, agility is embodied in methodologies outlined in the 2001 Agile Manifesto, which prioritizes customer collaboration, adaptive planning, and delivering functional software incrementally. These principles have since influenced broader business agility frameworks, enabling companies to thrive in volatile markets by fostering resilience and continuous improvement.^[2]^[8]^[9]

Definition and Fundamentals

Definition

Agility is defined as a rapid whole-body movement involving a change of velocity or direction in response to a stimulus, which integrates various isolated motor skills including balance, coordination, and reaction time. This conceptualization highlights agility as a complex physical ability rather than a singular trait, encompassing both perceptual decision-making and physical execution. Key characteristics of agility include its demand for whole-body coordination, its inherently reactive quality—distinguishing it from scripted or pre-planned actions—and a focus on maintaining efficiency and control to minimize energy loss and injury risk during dynamic adjustments. Unlike speed, which primarily involves linear propulsion over distance, or power, which emphasizes maximal force output in short bursts, agility necessitates deceleration, rapid reacceleration, and precise directional shifts, often under unpredictable conditions.^[2] From an evolutionary perspective, agility contributed significantly to survival among early humans and animals by enabling swift evasion of predators through evasive maneuvers.^[10]

Etymology and Historical Development

The term "agility" originates from the Latin adjective agilis, meaning "nimble," "fleet," or "quick," derived from the verb agere, "to drive" or "to do." It entered Middle English around the 14th century as agilite, borrowed from Old French agilité, initially denoting physical nimbleness or mental quickness in literary and descriptive contexts.^[11]^[12] In the 19th century, as physical education gained prominence in Europe and North America through movements like German gymnastics and Swedish calisthenics, "agility" began appearing in pedagogical texts to describe coordinated, rapid movements essential for health and military training. Early references emphasized its role in developing overall physical vigor, with figures like Friedrich Jahn promoting apparatus-based exercises that enhanced nimble, adaptive motion in youth programs. By the late 1800s, American educators such as Edward Hitchcock incorporated agility into school curricula as a foundational quality for holistic fitness, shifting its use from mere literary descriptor to a practical attribute in organized physical culture. The 20th century marked the formalization of agility within sports science, with early studies in the 1950s and 1960s linking it to motor skills and change-of-direction ability. For instance, Thomas K. Cureton's work in the 1950s introduced tests like precursors to the Illinois Agility Run, while David K. Mathews in 1973 defined agility as the capacity for rapid positional changes with control and accuracy. Researchers such as H.H. Clarke (1959) and Barrow and McGee (1971) further integrated it into athletic profiling, viewing it as a composite of speed, power, and coordination; Johnson and Nelson (1969) similarly highlighted its ties to explosive motor responses in team sports.^[13] Key advancements in the late 20th century included P. Chelladurai's 1976 classification of agility tasks into perceptual, spatial, and temporal dimensions, underscoring decision-making elements. The 2000s saw the evolution toward reactive models, with Warren B. Young and colleagues (2002) proposing a framework separating change-of-direction speed from perceptual-cognitive factors, culminating in Jeremy M. Sheppard and Young's influential 2006 review, which redefined agility as "a rapid whole-body movement with change of velocity or direction in response to a stimulus." Post-2010 research has intensified focus on these perceptual aspects, with studies like those by Sophia Nimphius (2012) and Jason Lockie (2017) demonstrating how cognitive processing and anticipation enhance reactive agility in dynamic sports environments, transforming it into a quantifiable, trainable component of performance.^[13]^[14]

Components of Physical Agility

Perceptual and Cognitive Elements

Perceptual factors are essential for agility, enabling the detection and interpretation of dynamic environmental stimuli to initiate appropriate motor responses. Visual scanning allows individuals to monitor multiple cues simultaneously, such as an opponent's posture or environmental obstacles, which is critical for maintaining situational awareness during rapid directional changes. Anticipation of stimuli, exemplified by predicting an opponent's movements based on biomechanical cues like hip rotation or gaze direction, reduces reaction times by allowing preemptive adjustments. Proprioception contributes by providing real-time feedback on body position and joint angles, ensuring precise control and balance during unpredictable maneuvers. Cognitive processes integrate these perceptual inputs to execute agile actions under time constraints. Reaction time reflects the speed of initial sensory-motor coupling, while decision-making speed involves evaluating options and selecting optimal responses amid uncertainty. Executive functions, including the inhibition of prepotent but incorrect responses, prevent errors in high-pressure scenarios, such as evading a defender in team sports. These elements converge through neural pathways, with the motor cortex facilitating the precision and velocity of voluntary movements and the cerebellum coordinating timing and error correction for fluid adaptations. Empirical research underscores the trainability of these perceptual-cognitive components to enhance agility. A 2024 meta-analysis of perceptual-cognitive training interventions in team sports revealed large effect sizes for improvements in anticipation and decision-making in controlled settings (ES = 1.51) and medium effects for transfer to on-field performance (ES = 0.65), highlighting benefits for reactive agility tasks.^[15] Age exerts a notable influence, as older adults experience declines in agility due to slowed cognitive processing speeds, which impair stimulus detection and response initiation, increasing susceptibility to falls or collisions in dynamic environments. In contrast, expertise fosters advanced pattern recognition, enabling elite athletes to discern familiar configurations in opponents' actions more rapidly than novices, thereby optimizing anticipatory responses and overall agility efficiency.

Biomechanical and Physiological Elements

Physical agility relies on the physiological foundations of the musculoskeletal system, particularly the predominance of fast-twitch muscle fibers (Type II), which enable rapid force production essential for explosive movements in change-of-direction tasks. Type II fibers, including subtypes IIA and IIX, are more abundant in athletes excelling in agility-demanding sports like soccer and basketball, where they contribute to quicker acceleration and deceleration compared to slow-twitch Type I fibers dominant in endurance activities.^[16] Anaerobic energy systems, such as the phosphagen and glycolytic pathways, provide the high-intensity, oxygen-independent ATP for short bursts lasting 5-30 seconds, directly supporting the metabolic demands of agility maneuvers like sprints and pivots.^[17] Neuromuscular coordination integrates sensory feedback with motor output to synchronize muscle activation, allowing precise control during dynamic actions; deficits in this system can impair agility by delaying force transmission from the central nervous system to muscles.^[18] Biomechanically, agility involves eccentric muscle contractions to manage deceleration, where muscles lengthen under tension to absorb kinetic energy and prepare for redirection, reducing momentum without loss of balance. For instance, during a 90-degree cut, the quadriceps and hamstrings perform eccentric work to brake forward motion, with peak forces often exceeding several times body weight. Joint stability at the ankle and knee is crucial for maintaining alignment during these transitions; the ankle's proprioceptive mechanisms detect ground contact and adjust eversion/inversion to prevent excessive pronation, while knee stabilizers like the ACL resist valgus loading.^[19] Ground reaction forces (GRF) during directional changes exhibit distinct profiles, with vertical GRF peaking early in braking phases (up to 4-5 body weights) and horizontal propulsive impulses directing the center of mass toward the new path, optimizing turn efficiency.^[20] Several factors influence these elements, including flexibility, which enhances range of motion at hips and ankles to facilitate smoother directional shifts; core strength stabilizes the torso against rotational torques, improving overall power transfer; and power output, measured as force applied over time, amplifies acceleration in agility tasks.^[21] Basic mechanics underpin these interactions via Newton's second law, F = m \times a, where force (F) generated by muscles alters an athlete's mass (m) acceleration (a) during change-of-direction, with higher forces yielding faster velocity adjustments despite fixed body mass.^[22] Enhanced agility correlates with injury prevention, as improved landing mechanics—characterized by greater knee flexion and hip abduction—distribute GRF more evenly, reducing anterior cruciate ligament (ACL) strain and lowering tear risk by up to 50% in trained athletes.^[23]

Applications in Sports and Fitness

Role in Athletic Performance

Agility plays a pivotal role in athletic performance, particularly in sports requiring rapid changes in direction and velocity. In team sports such as soccer and basketball, it enables athletes to dodge opponents, execute quick cuts, and maintain positional advantage during dynamic play, contributing to offensive and defensive success.^[24] In contrast, linear sports like sprinting emphasize straight-line speed over multi-directional maneuvers, making agility a secondary attribute.^[25] Elite athletes demonstrate superior agility compared to novices, with differences typically 2-5% faster in change-of-direction test times in sports like soccer, which enhances evasion, tackling efficiency, and recovery from directional changes. For instance, in soccer, data from standardized tests reveal that elite players outperform novices in change-of-direction tasks, allowing for more effective gameplay under pressure.^[26]^[27] This superiority stems from refined perceptual-cognitive processing and biomechanical efficiency, directly correlating with higher competitive outcomes.^[28] Gender and positional demands further modulate agility's impact. In sports like volleyball, females may rely more on perceptual-cognitive skills, such as selective attention and sensory sensitivity, to contribute to reactive agility performance, potentially helping to offset differences in physical speed.^[29] In soccer, midfielders typically require and display greater agility than goalkeepers due to the need for frequent directional shifts across the field, as evidenced by faster T-test times among midfielders.^[30] Poor agility elevates collision and injury risks by impairing evasive maneuvers and body control during contact. Additionally, agility declines with fatigue owing to reduced neuromuscular coordination and slower decision-making, exacerbating error rates in late-game scenarios.^[31]^[32] In general fitness contexts, agility training supports injury prevention, balance, and functional mobility for recreational exercisers and older adults, enhancing daily activities and reducing fall risks.

Training Techniques and Drills

Agility training employs a variety of drills and techniques designed to enhance rapid directional changes, acceleration, and deceleration while maintaining control. Basic drills focus on foundational movement patterns, such as ladder runs, which improve foot speed and coordination through high-frequency stepping patterns within a marked ladder on the ground.^[33] Cone shuttles, including the pro-agility shuttle (5-10-5 drill), involve short sprints with 180-degree turns between cones spaced 5 yards apart, targeting change-of-direction speed in a pre-planned environment.^[13] Reactive setups, like mirror drills where a partner mimics or leads movements to prompt responses, introduce decision-making elements to simulate opponent interactions.^[34] Advanced techniques build on these foundations by incorporating explosive power and sport-specific demands. Plyometrics, such as multiplanar jumps (e.g., depth jumps or bounding drills), utilize the stretch-shortening cycle to develop reactive strength and improve landing mechanics during turns.^[33] Sport-specific simulations adapt drills to contextual movements; for instance, in tennis, agility pole setups with lateral shuffles and quick stops mimic court coverage and ball retrieval patterns.^[33] Periodization models integrate these elements 1-4 times per week, progressing from lower-intensity sessions in preparatory phases to higher volumes during competition periods to optimize adaptation without fatigue accumulation.^[33] Programming guidelines emphasize structured volume, progression, and recovery to maximize gains while minimizing injury risk. Typical sessions include 10-20 meter sprints with integrated turns (e.g., 5 sets of 4-5 repetitions at 80-90% effort), allowing 30-60 seconds recovery between reps and 2-3 minutes between sets.^[13] Progression shifts from closed skills—pre-planned patterns like fixed cone routes—to open skills, such as reactive cues in mirror drills, to enhance perceptual-motor integration over 4-12 weeks.^[34] Recovery protocols prioritize active rest and monitoring for overuse, with agility work comprising 10-20% of total training volume alongside strength and endurance components.^[33] Evidence from systematic reviews indicates that these methods yield measurable improvements in agility performance. For example, plyometric and sprint-based protocols over 6-8 weeks can enhance pro-agility shuttle times by approximately 3-6%, with effect sizes ranging from 0.09 to 0.11, particularly when combined with resistance elements.^[33] Change-of-direction drills similarly produce small to moderate gains (effect size 0.02-0.11), supporting their role in elevating overall athletic quickness.^[13] As of 2025, speed, agility, and quickness (SAQ) training has been shown to enhance change-of-direction ability and reaction time with small to moderate effect sizes in team sports athletes.^[35]

Assessment and Measurement

Common Testing Protocols

Common testing protocols for assessing physical agility in sports and fitness contexts involve standardized field-based tests that measure change-of-direction speed through timed courses requiring acceleration, deceleration, and multidirectional movements. These protocols emphasize precise setup, consistent execution, and reliable timing to ensure comparability across individuals and groups. Key tests include the Illinois Agility Test, the T-Test, and the Pro-Agility Test (also known as the 5-10-5 shuttle), each designed to simulate sport-specific demands while using minimal equipment on a flat, non-slip surface such as a gym floor or athletic field.^[36]^[37]^[38] The Illinois Agility Test evaluates agility through a 60-meter course incorporating straight-line sprints and sharp turns around obstacles. Setup requires eight cones arranged in a rectangular pattern: four cones mark the start/finish lines and turning points at 0 m, 10 m, and 20 m, while four additional cones are placed 3 meters apart perpendicular to the course between the 10 m and 20 m marks to form a weaving section. The participant begins in a prone position (face down) behind the starting line with hands by the shoulders, ready to push up on the tester's signal. Execution involves sprinting 10 meters to the first turn, another 10 meters to the weaving zone, circling each of the four inner cones in sequence (left around the first, right around the second, and so on), then sprinting 10 meters to the final turn and 10 meters back to the finish line. Timing starts on the "go" command and stops when the chest crosses the finish line; three trials are typically performed with 2-3 minutes rest between, using the best time or an average. Timing can be manual with a stopwatch or automated via photocells placed at the start and finish for greater precision.^[36]^[39] The T-Test assesses multidirectional agility with forward, lateral, and backward components in a T-shaped layout. Four cones are positioned as follows: cone A at the base, cone B 9.14 meters directly ahead, and cones C and D 4.57 meters to the left and right of B, respectively, forming the crossbar of the T. The participant starts at cone A in a two-point stance (feet on the line, hands on knees). On the signal, they sprint forward to touch cone B with the right hand, shuffle laterally left to touch cone C with the left hand (keeping face forward), shuffle right past B to touch cone D with the right hand, shuffle back to touch B with the left hand, and finally backpedal to cone A. Shuffling must maintain side-facing without crossing feet, and all cones must be touched; three trials are conducted with rest intervals, recording the fastest time to 0.1-second accuracy. Stopwatches suffice for timing, though photocell gates enhance reliability. Some variants start from a prone position to mimic sport-specific readiness.^[37]^[40] The Pro-Agility Test (5-10-5 shuttle) focuses on linear change-of-direction speed over a short distance. Three cones are aligned in a straight line: the middle cone marks the start/finish at 0 yards, one at 5 yards to one side, and the third at 10 yards to the opposite side (total span 15 yards or 13.72 meters). The participant assumes a three-point stance straddling the center line, facing perpendicular to the course. On the "go" signal, they explode 5 yards to touch the first cone (using the near foot and hand), pivot 180 degrees, accelerate 10 yards to touch the far cone, pivot again, and sprint 5 yards back through the start line to finish. The test is performed in both directions (left-first and right-first) for three trials each, with 2-3 minutes rest, averaging the best or mean time. Photocell timing gates at the start and finish are preferred over stopwatches to capture split-second accuracy.^[38]^[41] Normative benchmarks for these tests vary by age, gender, and sport, providing reference points for athletes; for instance, excellent performance on the Illinois Agility Test for 16-19-year-old males is under 15.2 seconds, while for females it is under 17.0 seconds, with elite adult soccer players often achieving times below 15 seconds. On the T-Test, excellent times for adult male team sport athletes are under 9.5 seconds, and for females under 10.5 seconds. Pro-Agility Test benchmarks for elite NFL combine participants typically fall below 4.3 seconds for males, with soccer adaptations emphasizing similar thresholds adjusted for positional demands in team sports versus the more individualized focus in sports like tennis. These norms are derived from large cohorts and allow for age/gender stratification, such as slower times for youth (e.g., 17.78 seconds mean for U-14 elite soccer on Illinois) compared to adults.^[36]^[42]^[37] Essential equipment across these protocols includes 3-8 marker cones (typically 20-30 cm high for visibility), a measuring tape or wheel for precise distances, and timing devices such as stopwatches for basic setups or photocell gates for professional accuracy. The testing area must be a flat, dry, non-slip surface at least 20x10 meters to accommodate the courses, with clear boundaries to prevent interference; multiple administrators are recommended for setup, signaling, and timing to minimize errors. Adaptations for team sports may involve group testing rotations, while individual sports prioritize isolated trials to reflect solo performance demands.^[43]^[38]^[41]

Interpretation and Limitations

Interpretation of agility test results typically involves establishing normative benchmarks through percentile rankings, which allow coaches and researchers to compare an individual's performance against age-, sex-, and sport-specific standards. For instance, percentile comparison methods (PCMs) have been applied to youth athletes to adjust for relative age and maturity effects, enabling more accurate identification of talent and developmental needs in agility tasks. Longitudinal tracking complements this by monitoring changes over time, such as pre- and post-training improvements, to assess training efficacy and track athletic maturation in team sports like soccer. These methods provide practical insights but require standardized protocols to ensure comparability across assessments. Agility test scores also exhibit moderate correlations with actual game performance in team sports, typically ranging from r = 0.4 to 0.6, indicating that while physical agility contributes to on-field success, it explains only a portion of variance due to contextual factors like decision-making under pressure. However, a key limitation is that many common tests primarily measure change-of-direction (COD) speed—a pre-planned physical maneuver—rather than true reactive agility, which incorporates perceptual-cognitive responses to dynamic stimuli like opponent movements. This distinction persists even in fatigued conditions, where reactive agility shows greater impairment, highlighting the tests' incomplete representation of sport demands. Environmental factors, such as surface grip and weather conditions, can significantly influence test outcomes by altering traction and movement efficiency, potentially leading to variability that is not athlete-specific. Additionally, learning effects from repeated practice inflate scores in subsequent trials, as athletes become familiar with test patterns, which complicates the isolation of true performance gains. Regarding validity and reliability, tests like the T-Test demonstrate high test-retest reliability with intraclass correlation coefficients (ICC) exceeding 0.9, supporting consistent measurement of physical components. Yet, their ecological validity remains low for open-skill sports, where unpredictable environments demand integrated cognitive processing; recent 2020s research critiques this overemphasis on physical metrics, arguing for greater inclusion of perceptual elements to better mirror game realities. Future directions in agility assessment emphasize integrating advanced technologies like motion capture systems to enable holistic evaluations that capture both biomechanical and cognitive aspects in ecologically valid settings. Markerless motion capture, powered by AI and computer vision, offers promise for real-time, outdoor tracking of reactive movements, addressing current limitations in traditional field tests and facilitating more comprehensive performance analysis.

Agility Beyond Humans

In Animals and Comparative Biology

Agility in animals has evolved as a critical survival trait, enabling rapid evasion of predators, pursuit of prey, and navigation of complex environments. In cheetahs (Acinonyx jubatus), exceptional agility manifests in their ability to execute sharp turns at speeds up to 58 mph (93 km/h), facilitated by a long, flexible tail that acts as a counterbalance and rudder for stability during high-speed maneuvers.^[44] This adaptation is tied to evolutionary pressures for efficient hunting on the African savanna, where prey like gazelles employ zigzagging escapes. Similarly, in primates such as gibbons (Hylobates spp.), brachiation—suspended arm-swinging locomotion—represents an agile traversal of forest canopies, supported by elongated forelimbs, flexible shoulder joints, and prehensile hands that allow pendulum-like swings covering up to 15 meters per stride. Genetic factors, including limb proportions and neural efficiency, underpin these traits; for instance, variations in genes like those influencing muscle fiber composition and proprioceptive feedback enhance rapid directional changes across species.^[45] Diverse animal groups exhibit specialized agility forms. Birds like the peregrine falcon (Falco peregrinus) achieve unparalleled aerial agility through stoop dives exceeding 200 mph (320 km/h), where streamlined body shape, keeled sternum for powerful pectoral muscles, and nictitating membranes protect eyes during high-G maneuvers to intercept agile avian prey.^[46] In insects, such as houseflies (Musca domestica), evasion relies on compound eyes detecting motion at 250 Hz and neural circuits enabling banked turns and halteres-mediated stabilization, allowing escape from swats via torque-coupling maneuvers that rotate the body in under 50 milliseconds.^[47] Domesticated animals demonstrate agility in human-designed contexts; in dog agility sports, breeds like Border Collies navigate obstacle courses featuring jumps, tunnels, and weave poles, with performance measured by completion time (typically 20-40 seconds for standard courses) and fault penalties for errors, highlighting selective breeding for speed and precision.^[48] Comparative physiology reveals key differences in agility between humans and other animals. Quadrupeds, such as dogs and cats, benefit from a lower center of gravity—positioned closer to the ground due to their four-limbed posture—which enhances lateral stability and reduces torque during turns compared to bipedal humans, whose higher center of mass demands greater muscular control to prevent falls.^[49] Allometric scaling principles further explain interspecies variation: agility metrics like maximum turning radius and acceleration generally decline with body size, as larger animals face increased inertial forces, while maximum speed follows a hump-shaped relationship peaking at intermediate body masses around 50 kg.^[50]^[51] Studies on animal agility have informed biomechanical models applicable to human training protocols. For example, research on lizards like the curly-tailed lizard (Leiocephalus carinatus) analyzes sprint-turn kinematics, revealing how tail morphology modulates angular momentum to maintain speed during 90-degree turns (reducing velocity loss to ~20%), providing insights into core stability and reactive strength exercises for athletes.^[52] These comparative approaches, drawing from high-speed videography and force-plate data, underscore evolutionary convergences in neural-motor coordination that enhance human agility drills without direct human experimentation.^[53]

Metaphorical and Organizational Uses

In organizational contexts, business agility refers to an organization's capacity to detect internal and external changes and respond effectively to deliver value to customers.^[6] This concept draws from physical agility's emphasis on rapid adaptation but applies it to strategic and operational flexibility, often through iterative processes in lean management. A foundational framework is the 2001 Agile Manifesto, developed by software developers to prioritize individuals and interactions, working software, customer collaboration, and responsiveness to change over rigid planning.^[54]^[55] In technological domains, agility manifests as the ability to swiftly update cryptographic algorithms or protocols in response to emerging threats, such as quantum computing vulnerabilities.^[56] Known as cryptographic agility, this enables systems to transition between primitives without major overhauls, ensuring long-term security.^[57] Similarly, in robotics, companies like Agility Robotics design humanoid robots, such as the Digit model, to perform dynamic movements in logistics and manufacturing environments, mimicking human-like agility for tasks requiring balance and adaptability. As of March 2025, Digit has been enhanced with new capabilities for autonomous warehouse operations, supported by a dedicated production factory opened in 2024.^[58]^[59] Culturally, agility extends to psychological interpretations, where mental agility—also termed cognitive or psychological flexibility—denotes the capacity to shift perspectives, adapt thinking to new information, and solve problems under uncertainty.^[60] In recreational contexts, the term inspires animal sports like dog agility, a timed obstacle course competition invented in 1978 at the UK's Crufts Dog Show to entertain audiences during halftime, with formal rules established by the Kennel Club shortly thereafter.^[61] Equine agility, a ground-based variant for horses without riding, emerged in 2009 when the International Horse Agility Club was founded, building on similar principles of handler-guided navigation through obstacles to promote partnership and trust.^[62] Despite these extensions, the metaphor of physical agility has limitations when applied to organizations; its focus on immediate reactivity often fails to capture the deliberate, long-term planning needed in complex or ambiguous environments, leading to critiques of superficial adoption in management practices.^[63] Scholars note that agility's dimensions remain ill-defined, sometimes conflated with flexibility or resilience, which can hinder precise implementation and measurement in business literature.^[64]

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Agility T-Test - Physiopedia
The Agility T-Test is an important agility test used to assess an athlete's ability to change direction, involving forward, lateral, and backward movements.
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Pro-Agility (5-10-5) Test
### Summary of Pro-Agility (5-10-5) Test
[43]
Evaluation of the Illinois Change of Direction Test in Youth Elite ...
The Illinois change of direction test has been routinely used for testing change of direction ability in soccer players. The aim of the present study was to ...
[44]
Assessing Agility Using the T Test, 5-10-5 Shuttle, and Illinois Test
### Summary of Agility Tests
[45]
Fastest land animal alert! Did you know a cheetah can ... - Facebook
Jul 22, 2025 · Did you know a cheetah can go from 0 to 60 mph in just 3 seconds? ... Their long tail helps them balance when they turn at top speed! We ...<|control11|><|separator|>
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How Pendular Is Human Brachiation? When Form Does Not Follow ...
Apr 22, 2023 · Brachiation has only ever evolved in Primates, and the living hominoids (i.e., apes) are considered specialized brachiating species. Odd ...
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Genetic selection of athletic success in sport-hunting dogs - PMC
Jul 3, 2018 · Genetic variation in the ROBO1 gene may cause variability in cognitive plasticity that explains the marked differences in physical performance ( ...Missing: neural | Show results with:neural
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Diving-Flight Aerodynamics of a Peregrine Falcon (Falco peregrinus)
Feb 5, 2014 · This study investigates the aerodynamics of the falcon Falco peregrinus while diving. During a dive peregrines can reach velocities of more than 320 km h −1.
[49]
A tailless aerial robotic flapper reveals that flies use torque ... - Science
Sep 14, 2018 · Flying insects demonstrate extraordinary agility when they reject wind gusts (1), catch prey (2), or evade a human hand trying to swat them (3).
[50]
Agility Obstacles | USDAA
Jump heights are modified for different size groupings of dogs (from as low as 4 inches to as high as 26 inches). A typical jump is made of PVC pipes and may or ...
[51]
Center of gravity: Humans vs Dogs - YouTube
Mar 4, 2024 · Watch the full video on our YouTube Channel! #CenterOfGravity #HumansVsDogs #WeightDistribution #Shorts #PhysicalTherapy ...
[52]
[PDF] A general scaling law reveals why the largest animals are not the ...
A hump-shaped relationship, due to finite acceleration time, explains why larger animals are not the fastest, as they need more time to accelerate.
[53]
Differential scaling of locomotor performance in small and large ...
Aug 6, 2025 · The scaling of relative locomotor performance proved to be non-linear when the entire range of body masses was considered and showed a ...Abstract And Figures · References (88) · Allometry Of Leg Muscles Of...
[54]
[PDF] 11 Determinants of lizard escape performance: decision, motivation ...
Although turning generally decreases sprint speed in some lizards (Jayne ... biomechanics of the lizard stride. Journal of Experimental Biology, 216 ...
[55]
The correlated evolution of biomechanics, gait and foraging mode in ...
Apr 1, 2008 · These findings provide strong evidence that foraging mode drives the evolution of biomechanics and gaits in lizards and that there are several ways to evolve ...Missing: turn | Show results with:turn
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History: The Agile Manifesto
The Agile Manifesto was created at a meeting in Utah in Feb 2001, signed by participants, and the group formed the Agile Alliance.
[57]
Manifesto for Agile Software Development
The Agile Manifesto values individuals and interactions, working software, customer collaboration, and responding to change over following a plan.
[58]
Crypto-agility and quantum-safe readiness - IBM
Jun 19, 2024 · Crypto-agility means that a system, platform, application, or organization can rapidly adapt its cryptographic mechanisms and algorithms in response to ...
[59]
What is Crypto-Agility? | Definition from TechTarget
Jun 24, 2025 · Crypto-agility, or cryptographic agility, is the ability of an organization to efficiently and rapidly change cryptographic algorithms, protocols or primitives.
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Agility Robotics
The world's first commercially deployed humanoid robot. Embodied AI. Digit is the front line for putting AI to work in ...CareersHumanoid RobotsOur SolutionMeet our leadership team.RoboFab
[61]
How to Get Comfortable With Uncertainty and Change
Oct 4, 2022 · To get more comfortable with uncertainty, we need to practice what Fox calls mental agility, or what psychologists call psychological flexibility.
[62]
History of Dog Agility: The Evolution of the Fast-Paced AKC Sport
May 29, 2024 · Dog agility began in the UK at Crufts in 1978, inspired by equestrian show jumping. The AKC held its first trial in 1994, and now has over one ...Missing: concept | Show results with:concept<|control11|><|separator|>
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Fancy trying your hand at horse agility? Here's what you need to ...
Apr 7, 2023 · Find out more about horse agility – what it is, how to get involved and compete, and learn more about some of the obstacles you can tackle.
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The Case Against Agility - MIT Sloan Management Review
Sep 26, 2017 · Agility can help in volatile conditions, but it is useless, and even detrimental, in uncertain, complex, or ambiguous ones.
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Organizational agility: ill-defined and somewhat confusing? A ...
Apr 19, 2020 · A confusing usage of the term 'agility dimensions' and a lack of a lucid meaning remain worthy of criticism.