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Oliver Gonzalo-Skok, Alejandro Moreno-Azze, José Luis Arjol-Serrano, Julio Tous-Fajardo and Chris Bishop

current study was to compare the effects of performing different unilateral strength training interventions on unilateral horizontal, triple unilateral horizontal, bilateral and unilateral vertical jumping, and their related asymmetries in young soccer players. Methods Subjects Forty-five male young (U-17

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Peter A. van de Hoef, Jur J. Brauers, Maarten van Smeden, Frank J.G. Backx and Michel S. Brink

-oriented jump exercises instead of only vertical jump exercises. A combination of vertical plus horizontal jump exercises seems to be more effective than solely vertical jump exercises in improving jump height. 19 Sprint Speed Sprint tests over 5 distances were assessed. Plyometric training significantly

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João Ribeiro, Luís Teixeira, Rui Lemos, Anderson S. Teixeira, Vitor Moreira, Pedro Silva and Fábio Y. Nakamura

a growing interest in developing training programs that specifically enhance performance during these powerful activities. Several strength–power training strategies result in significant soccer-specific physical performance changes, typically assessed by vertical jump, straight-line sprint, and

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Ramón Marcote-Pequeño, Amador García-Ramos, Víctor Cuadrado-Peñafiel, Jorge M. González-Hernández, Miguel Ángel Gómez and Pedro Jiménez-Reyes

matches. 3 Therefore, due to the undeniable importance of vertical jumps and linear sprints in soccer competitions, researchers have focused on describing the performance of soccer players during these actions as well as on enhancing vertical jump and sprint capabilities through training interventions. 6

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Jeffrey D. Simpson, Ludmila Cosio-Lima, Eric M. Scudamore, Eric K. O’Neal, Ethan M. Stewart, Brandon L. Miller, Harish Chander and Adam C. Knight

completed 3 CMJ on the force platform separated by 30-second rest periods between trials. To ensure participants were jumping in the vertical direction, a Vertec (Knoxville, TN) was placed adjacent to the force platform as a target for the CMJ attempts. The second vertical jump test consisted of 2 trials of

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John J. McMahon, Paul A. Jones, Timothy J. Suchomel, Jason Lake and Paul Comfort

usefulness as a vertical-jump performance metric. Although RSImod was shown to be related to force and power characteristics of the unloaded CMJ, such as rate of force development ( r  = .56–.66), peak force ( r  = .37–.50), and peak power ( r  = .47–.69), 4 that study only included “gross” measures of CMJ

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Malachy P. McHugh, Tom Clifford, Will Abbott, Susan Y. Kwiecien, Ian J. Kremenic, Joseph J. DeVita and Glyn Howatson

-Sensor 2; BTS Bioengineering, Brooklyn, NY). As described previously, participants started the movement standing upright with hands on their hips, and after a verbal cue, descended into a squat (countermovement) prior to performing a maximal effort vertical jump. Participants performed 3 maximal efforts

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Athanasios Chatzinikolaou, Konstantinos Michaloglou, Alexandra Avloniti, Diamanda Leontsini, Chariklia K. Deli, Dimitris Vlachopoulos, Luis Gracia-Marco, Sotirios Arsenis, Ioannis Athanailidis, Dimitrios Draganidis, Athanasios Z. Jamurtas, Craig A. Williams and Ioannis G. Fatouros

CT protocol used also resulted in improvement of vertical jumping corroborating previous findings in youth. 27 It appears that even a moderate rise in maximal strength is associated with a substantial increase in lower-limb muscle power 29 and participants in this study improved both. Maturation

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Alejandro Muñoz, Álvaro López-Samanes, Alberto Pérez-López, Millán Aguilar-Navarro, Berta Moreno-Heredero, Jesús Rivilla-García, Pablo González-Frutos, José Pino-Ortega, Esther Morencos and Juan Del Coso

other one from behind 9-m line. For the 7-m throw, the test followed the rules for the penalty throw in handball. For the 9-m throw, a 3-step run and a vertical jump behind the 9-m line preceded the throw to simulate an in-game throw. 2 , 25 Each BT was executed with and without the presence of a

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Paul G. Montgomery and Brendan D. Maloney

fatigue is evident from the demands experienced after 3 games in 3 consecutive days of play. 1 The magnitude of the decrement was small to moderate across various performance characteristics including speed, repeat-effort line-drill, agility, and vertical jump. One explanation for decreases in