Ramírez Campillo, RodrigoGonzález Jurado, José AntonioMartínez Salazar, CristianAlonso Martínez, AliciaIzquierdo Redín, Mikel2020-09-222020-09-2220161440-244010.1016/j.jsams.2015.10.005https://academica-e.unavarra.es/handle/2454/38211Objectives: To investigate the effects of a six-week plyometric training and creatine supplementation intervention on maximal-intensity and endurance performance in female soccer players during in-season training. Design: Randomized, double-blind, placebo-controlled trial. Methods: Young (age 22.9 ± 2.5 y) female players with similar training load and competitive background were assigned to a plyometric training group receiving placebo (PLACEBO, n = 10), a plyometric training group receiving creatine supplementation (CREATINE, n = 10) or a control group receiving placebo without following a plyometric program (CONTROL, n = 10). Athletes were evaluated for jumping, maximal and repeated sprinting, endurance and change-of-direction speed performance before and after six weeks of training. Results: After intervention the CONTROL group did not change, whereas both plyometric training groups improved jumps (ES = 0.25–0.49), sprint (ES = 0.35–0.41), repeated sprinting (ES = 0.48–0.55), endurance (ES = 0.32–0.34) and change-of-direction speed performance (ES = 0.46–0.55). However, the CREATINE group improved more in the jumps and repeated sprinting performance tests than the CONTROL and the PLACEBO groups. Conclusions: Adaptations to plyometric training may be enhanced with creatine supplementation.19 p.application/pdfeng© 2015 Sports Medicine Australia. Published by Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0.Muscle strengthSportsWomenStrength trainingErgogenic aidsinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess