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J Hum Kinet. 2017 Aug 1;58:99-109. doi: 10.1515/hukin-2017-0072. eCollection 2017 Sep.

Effects of Plyometric Training and Beta-Alanine Supplementation on Maximal-Intensity Exercise and Endurance in Female Soccer Players.

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Rosas of Buenos Aires Sport Club, Buenos Aires, Argentina.
Department of Physical Activity Sciences, Research Nucleus in Health, Physical Activity and Sport, Universidad de Los Lagos, Osorno, Chile.
Laboratory of Exercise Sciences, MEDS Clinic, Santiago, Chile.
Department of Physical Education, Sport and Recreation, Universidad de La Frontera, Temuco, Chile.
Laboratory of Physiology and Biomechanics, Universidad Autónoma de Chile, Temuco, Chile.
Laboratory of Physiology, Department of Biological Sciences, Faculty of Biological Sciences, Universidad Andrés Bello, Viña del Mar, Chile.
Laboratory of Exercise Sciences, Movement Solutions, Viña del Mar, Chile.
Canadian Sport Institute Pacific, Vancouver, Canada.
Canadian Soccer Association, Ottawa, Canada.
Centre for Sports and Exercise Science, School of Biological Sciences,University of Essex, Colchester, United Kingdom.
The College of Healthcare Sciences, James Cook University, Queensland, Australia.
Department of Medicine and Aging Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.
Nucleus of High Performance in Sport - NAR, São Paulo, SP, Brazil.
Faculty of Physical Culture, Sport and Recreation, Santo Tomás University, Bogotá, DC, Colombia.
Department of Health Sciences, Public University of Navarre, Navarra, Spain.


Plyometric training and beta-alanine supplementation are common among soccer players, although its combined use had never been tested. Therefore, a randomized, double-blind, placebo-controlled trial was conducted to compare the effects of a plyometric training program, with or without beta-alanine supplementation, on maximal-intensity and endurance performance in female soccer players during an in-season training period. Athletes (23.7 ± 2.4 years) were assigned to either a plyometric training group receiving a placebo (PLACEBO, n = 8), a plyometric training group receiving beta-alanine supplementation (BA, n = 8), or a control group receiving placebo without following a plyometric training program (CONTROL, n = 9). Athletes were evaluated for single and repeated jumps and sprints, endurance, and change-of-direction speed performance before and after the intervention. Both plyometric training groups improved in explosive jumping (ES = 0.27 to 1.0), sprinting (ES = 0.31 to 0.78), repeated sprinting (ES = 0.39 to 0.91), 60 s repeated jumping (ES = 0.32 to 0.45), endurance (ES = 0.35 to 0.37), and change-of-direction speed performance (ES = 0.36 to 0.58), whereas no significant changes were observed for the CONTROL group. Nevertheless, compared to the CONTROL group, only the BA group showed greater improvements in endurance, repeated sprinting and repeated jumping performances. It was concluded that beta-alanine supplementation during plyometric training may add further adaptive changes related to endurance, repeated sprinting and jumping ability.


ergogenic aids; female athletes; muscle strength; strength training

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