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Gregory C. Bogdanis, Athanasios Tsoukos, and Panagiotis Veligekas


To examine the acute effects of a conditioning plyometric exercise on long-jump performance during a simulated long-jump competition.


Eight national-level track and field decathletes performed 6 long-jump attempts with a full approach run separated by 10-min recoveries. In the experimental condition subjects performed 3 rebound vertical jumps with maximal effort 3 min before the last 5 attempts, while the 1st attempt served as baseline. In the control condition the participants performed 6 long jumps without executing the conditioning exercise.


Compared with baseline, long-jump performance progressively increased only in the experimental condition, from 3.0%, or 17.5 cm, in the 3rd attempt (P = .046, d = 0.56), to 4.8%, or 28.2 cm, in the 6th attempt (P = .0001, d = 0.84). The improvement in long-jump performance was due to a gradual increase in vertical takeoff velocity from the 3rd (by 8.7%, P = .0001, d = 1.82) to the 6th jump (by 17.7%, P = .0001, d = 4.38). Horizontal-approach velocity, takeoff duration, and horizontal velocity at takeoff were similar at all long-jump attempts in both conditions (P = .80, P = .36, and P = .15, respectively).


Long-jump performance progressively improved during a simulated competition when a plyometric conditioning exercise was executed 3 min before each attempt. This improvement was due to a progressive increase in vertical velocity of takeoff, while there was no effect on the horizontal velocity.

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Kike Aztarain-Cardiel, Isaac López-Laval, Luis A. Marco-Contreras, Jorge Sánchez-Sabaté, Nuria Garatachea, and Fernando Pareja-Blanco

basketball players and in other team-sports athletes. 8 , 9 Following the principle of specificity and transfer of training, 10 vertical and horizontal jumps increase performance in tasks oriented in their respective directions. However, a recent systematic review and meta-analysis suggests that

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Borja Muniz-Pardos, Alejandro Gómez-Bruton, Ángel Matute-Llorente, Alex González-Agüero, Alba Gómez-Cabello, José A. Casajús, and Germán Vicente-Rodríguez

Purpose: To examine the effects of a 6-month whole-body vibration (WBV) training on lower-body strength (LBS), lower-body power (LBP), and swimming performance in adolescent trained swimmers. Methods: Thirty-seven swimmers (23 males and 14 females; 14.8 [1.3] y) were randomly assigned to the WBV (n = 20) or the control group (n = 17). Isometric LBS (knee extension and half squat) and LBP (vertical and horizontal jumps and 30-m sprint) tests were performed before and after the intervention period. Swimming performance times in 100 m were collected from official competitions. As time × sex interaction was not found for any variable (P > .05), males and females were analyzed as a whole. Results: Within-group analyses showed a most likely beneficial moderate effect of WBV on isometric knee extension (effect size [ES] = 0.63), 30-m sprint test (ES = 0.62), and 100-m performance (ES = 0.25), although these were corresponded with comparable small to moderate effects in the control group (ES = 0.73, 0.71, and 0.20, respectively). The control group obtained a small possibly beneficial effect of swimming-only training on vertical jump performance, whereas no effect was observed in the WBV group. Unclear effects were observed for the rest of the variables assessed. Between-group analyses revealed unclear effects of WBV training when compared with the control condition in all studied variables. Conclusions: There is no current evidence to support the use of WBV training, and therefore, coaches and sports specialists should select other methods of training when the aim is to increase LBS, LBP, or swimming performance.

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Jennifer Sygo, Alicia Kendig Glass, Sophie C. Killer, and Trent Stellingwerff

Sport Food Considerations in Relation to the Jumps, Throws, and CE Performance efficacy per event group Ergogenic aid Rationale Vertical jumps Horizontal jumps Throws Multievents Beta-alanine Beta-alanine is an amino acid precursor of muscle carnosine, an intramuscular buffer with largest performance

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

enhancing the sprint performance, agreeing with previous studies (with similar approaches) conducted on the topic. 21 , 22 , 27 , 28 Indeed, both the OPL and PT interventions comprised exercises with an anteroposterior force vector relative to the body (eg, hip thrust vs horizontal jumps), which seems to

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Alasdair Strokosch, Loic Louit, Laurent Seitz, Richard Clarke, and Jonathan D. Hughes

performance is supported by Della Iacono et al, 18 who reported a greater improvement in 10-m sprint velocity after a 3-week training intervention involving horizontal jumps compared to a similar protocol using vertical jumps (ES = 0.66 and 0.16; P  < .05 for horizontal and vertical jumps, respectively

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Yassine Negra, Helmi Chaabene, Senda Sammoud, Olaf Prieske, Jason Moran, Rodrigo Ramirez-Campillo, Ali Nejmaoui, and Urs Granacher

small performance improvements in countermovement jump (CMJ), horizontal jumps, reactive strength index, and maximal kicking velocity (effect size [ES] = 0.27–0.47), with larger effects seen in LPJT than in UPJT. Additional loads may have induced larger stretch reflex amplitudes during training, and

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Marco Beato, Stuart A. McErlain-Naylor, Israel Halperin, and Antonio Dello Iacono

enhanced athletic performances (eg, vertical and horizontal jumps, sprints, changes of direction, swimming kick start). 34 , 56 , 57 Although no study has specifically compared the PAP effects of different EOL exercise volumes, this review suggests, based on previous PAP literature, possible advantages in

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Olaf Prieske, Helmi Chaabene, Christian Puta, David G. Behm, Dirk Büsch, and Urs Granacher

-up, which included jogging at moderate intensity and a 5-minute specific warm-up composed of submaximal reactive exercises (ie, multidirectional jump movements). Subsequently, athletes performed DJs from 3 different drop-heights (ie, 20, 35, and 50 cm). In addition, horizontal jumps (ie, SLJ) and linear

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Helmi Chaabene, Yassine Negra, Jason Moran, Olaf Prieske, Senda Sammoud, Rodrigo Ramirez-Campillo, and Urs Granacher

-up for all tests included 5 minutes of submaximal running with CoD exercises, 10 minutes of submaximal plyometrics (2 jump exercises of 20 vertical [ie, CMJ] and 10 horizontal jumps [ie, 2-footed ankles hop forward]), dynamic stretching exercises, and 5 minutes of a sprint-specific warm-up. 15 Speed