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Resumen El objetivo de este estudio fue valorar la disminucion de la altura de salto en el test CMJ antes, durante y despues de la competicion en nueve jovenes jugadores internacionales de baloncesto. Del mismo modo, se analizo la relacion entre los minutos  que cada jugador permanecia en cancha y la disminucion de la capacidad de salto. Para ello, se evaluo la altura de salto mediante el CMJ en 8 momentos diferentes (antes y despues del calentamiento, durante el descanso, inmediatamente despues del partido y en los minutos 1’, 3’, 5’ y 7’ tras la finalizacion del encuentro) utilizando una plataforma de contacto. Para estimar la presencia de diferencias significativas entre los momentos se utilizo el analisis de la varianza (ANOVA) de una cola. Los resultados demuestran que la capacidad de salto empeoro progresivamente durante la competicion (F = 89.29, p = 0), descendiendo durante el descanso de 52.7 cm a 50.2 cm (p < 0.05) y con valores de salto tras la finalizacion del partido de 49.0 cm (p < 0.05). Asi mismo, la altura de salto fue disminuyendo despues del final del partido, alcanzandose en la ultima toma (7’ despues del final del partido) el peor resultado (42.2 ± 2.4 cm), lo cual supuso un descenso del rendimiento del 19.8 ±4.8 %. Por otro lado, no se observaron correlaciones significativas entre el tiempo en pista y la disminucion de la capacidad de salto. La capacidad de salto de los jugadores se deteriora progresivamente durante y despues de la competicion. Palabras clave : deportes de equipo; fatiga; jugadores jovenes; alto nivel; salto vertical. abstract The main aim of this study was to assess the decrease in jump height in CMJ test before, during and after competition in international youth basketball. Equally, we examined the relationship between minutes played and the decline in jump capacity during the course of the match. To do this, we evaluated the jump height in CMJ by eight different times (before and after warm up, at rest, immediately after the game and within minutes 1', 3', 5 'and 7' after completion of the competition) using a contact platform. To estimate the presence of significant differences between the times we used a one – way analysis of variance (ANOVA). The results showed, that the jumping capacity decreased during competition (F = 89.29, p = 0), decrease during the rest of 52.7 cm to 50.2 cm (p < 0.05) and after completion of the match from 49.0 cm (p < 0.05). Similarly, jump height was decreased after the end of the match, reaching at the last measurement (7 'after the end of the competition) the worst result (42.2 ± 2.4 cm), which was a yield decrease of 19.8 ± 4.8 %. On the other hand, there was not correlation between play time and performance decline. The maximal jump capacity decreased during and after competition.  Key words : collective sports; fatigue; young players; top level; vertical jump. doi:10.5232/ricyde2010.02105  Referencias/references Andersson, H.; Raastad, T.; Nilsson, J.; Paulsen, G.; Garthe, I., & Kadi, F. (2008). Neuromuscular fatigue and recovery in elite female soccer: effects of active recovery. Medicine and Science in Sports and Exercise , 40(2), 372-380. doi:10.1249/mss.0b013e31815b8497 Ben Abdelkrim, N.; El Fazaa, S., & El Ati, J. (2007). Time-motion analysis and physiological data of elite under-19-year-old basketball players during competition. British Journal of Sports Medicine , 41(2), 69-75. doi:10.1136/bjsm.2006.032318 PMid:17138630 PMCid:2658931 Bishop, D. (2003). Warm Up II: Performance Changes Following Active Warm Up and How to Structure the Warm Up. Sports Medicine , 33(7), 483-498 doi:10.2165/00007256-200333070-00002 PMid:12762825 Bosco, C.; Luhtanen, P., & Komi, V. (1983). 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The effect of recovery strategies on physical performance and cumulative fatigue in competitive basketball. Journal of Sports Sciences , 26(11), 1135-1145. doi:10.1080/02640410802104912 PMid:18608847 Narazaki, K.; Berg, N.; Stergiou, B., & Chen, B. (2009). Physiological demands of competitive basketball. Scandinavian Journal of Medicine and Science in Sports , 19(3), 425-432. doi:10.1111/j.1600-0838.2008.00789.x PMid:18397196 Rojas, F. J.; Cepero, M.; Ona, A., & Gutierrez, M. (2000). Kinematic adjustments in the basketball jump shot against an opponent. Ergonomics , 43(10), 1651-1660. doi:10.1080/001401300750004069 PMid:11083144 Thorlund, J. B.; Michalsik, L. B.; Madsen, K., & Aagaard, P. (2008). Acute fatigue-induced changes in muscle mechanical properties and neuromuscular activity in elite handball players following a handball match. Scandinavian Journal of Medicine and Science in Sports , 18(4), 462-472. doi:10.1111/j.1600-0838.2007.00710.x PMid:18028284

revista internacional de ciencias del deporte

Análisis de la capacidad de salto antes, durante y después de la competición en jugadores internacionales junior de baloncesto. (Analysis of jumping capacity before, during and after competition in international junior basketball players).