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Bouwien Smits-Engelsman, Wendy Aertssen and Emmanuel Bonney

optimal levels of agility as many of the tasks they perform involve speed, twists, and turns ( 23 ). This underscores the need for accurate assessment and training of agility performance in childhood. Agility has historically been defined as an individual’s ability to run and change direction quickly ( 15

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Garrett Bunyak

, birdwatching, rodeo, hunting, dogsled racing, angling, bullfighting and dog and cat agility. In both professional and amateur sport, spectators, athletes, and competitive eaters consume nonhuman animals as food and use equipment made from nonhuman animal bodies. The interlocking relationships animals share

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Fang-Yu Hsu, Kuei-Lan Tsai, Chia-Lun Lee, Wen-Dien Chang and Nai-Jen Chang

and badminton, table tennis players are reported to be more agile at side stepping. 3 In addition, table tennis stroke skills are also crucial, which can be quantified by ball speed. Therefore, power, agility, and ball speed play essential roles in a table tennis player’s ability to win competitions

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Bethany L. Anderson, Rod A. Harter and James L. Farnsworth II

researchers noted statistically significant improvements in vertical jump height (in centimeters) in the dynamic stretching plus foam rolling groups compared with the light walking plus dynamic stretching group. 2 No significant improvements were noted for flexibility or agility between treatment groups. 2

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Daniel J. Brinkmann, Harald Koerger, Albert Gollhofer and Dominic Gehring

Agility running is a key component of soccer performance and includes accelerations, decelerations, changes of direction, and initiations of whole-body movements. 1 The frequency of such soccer-specific movements (>700 cuts and turns within a match by a player in the English football association

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Maria C. Madueno, Vincent J. Dalbo, Joshua H. Guy, Kate E. Giamarelos, Tania Spiteri and Aaron T. Scanlan

Pre-exercise Screening System (Exercise and Sports Science Australia). Players also gave verbal and written informed consent and were familiarized with study procedures, including completion of the Agility 5-0-5 Test. Each player then completed three 20-m linear sprints with 2 minutes of passive

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Iván Peña-González, Alba Roldan, Carlos Toledo, Tomás Urbán and Raúl Reina

classification system. Hence, this study evaluated the content validity of the new classification system for CP football through a COD test (ie, modified agility test [MAT]) and explored the validity and reliability of a new dribbling test to correctly classify international CP football players. We hypothesized

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Jon L. Oliver and Robert W. Meyers

Purpose:

The purpose of the current study was to assess the reliability of a new protocol that examines different components of agility using commercially available timing gates.

Methods:

Seventeen physically active males completed four trials of a new protocol, which consisted of a number of 10-m sprints. Sprints were completed in a straight line or with a change of direction after 5 m. The change of direction was either planned or reactive, with participants reacting to a visual light stimulus.

Results:

There was no systematic bias in any of the measures, although random variation was reduced in the straight acceleration and planned agility when considering only the fnal pair of trials, with mean coefficients of variation (CV) of 1.6% (95%CI, 1.2% to 2.4%) and 1.1% (0.8% to 1.7%), respectively. Reliability of reactive agility remained consistent throughout with mean CVs of approximately 3%. Analyses revealed a high degree of common variance between acceleration times and both planned (r 2 = .93) and reactive (r 2 = .83) agility, as well as between the two agility protocols (r 2 = .87).

Conclusion:

Both planned and reactive agility could be measured reliably. Protocol design and use of a light stimulus in the reactive test emphasize physical abilities comparable with other test measures. Therefore, inclusion of a reactive light stimulus does not appear to require any additional perceptual qualities.

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Javad Sarvestan and Zdeněk Svoboda

, tennis, and volleyball, also require cutting and turning in both the lateral and frontal planes. 15 For optimal performance, athletes in all of these sports require increased ankle stability. Agility tests demand quick deceleration, direction change, and reacceleration during the movements. 16 These 3

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Matthew Ellis, Mark Noon, Tony Myers and Neil Clarke

accelerations) or fatigue resistance during a soccer simulation match with young soccer players (18 [1] y) 9 despite improving reactive agility in elite youth soccer players (14 [1] y). 10 High doses of caffeine have also been reported to increase the susceptibility to negative side effects (increased heart