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Medicina dello Sport 2020 June;73(2):210-9

DOI: 10.23736/S0025-7826.20.03629-7

Copyright © 2020 EDIZIONI MINERVA MEDICA

language: English, Italian

Could static stretching decrease anaerobic power in young soccer players?

Rodolfo VELASQUE 1 , Dailson PAULUCIO 1, 2, Renato L. ALVARENGA 1, Caleb G. SANTOS 1, 3, Tane K. SERPA 4, Marco MACHADO 5, Alexander J. KOCH 6, Luciano ALONSO 1, Fernando A. POMPEU 1

1 Biometrics Laboratory (LadeBio), School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; 2 Department of Physiology, Botafogo de Futebol e Regatas, Rio de Janeiro, Brazil; 3 Brazilian Army Institute of Biology, Rio de Janeiro, Brazil; 4 Department of Physiology, Cruzeiro Sport Club, Minas Gerais, Brazil; 5 Grupo de Estudos em Fisiologia do Músculo Esquelético (GEFisME), UNIG Campus V, Rio de Janeiro, Brazil; 6 Lenoir-Rhyne University, Hickory, NC, USA


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BACKGROUND: The aim of this study was to analyze the effect of SS (2x45s) on the anaerobic power (Wingate Anaerobic Test [WAnT]) in young soccer athletes, and to determine if there was a the relationship between SS and anaerobic power output was influenced by subjects’ fitness.
METHODS: A randomized and crossover study was applied in twenty-one male athletes (16.2±0.5 years, 65.7±2.3 kg, 173.3±1.3 cm). Twenty days before beginning the experimental sessions, a Yo-Yo Intermittent Recovery test 2 (Yo-Yo IR2) was administered. The session experimental (EXP) involved 5 min of warm-up, followed by a SS protocol and then the WAnT. The session control (CON) involved 5 min of warm-up, followed by 5 min of passive rest and then the WAnT. The stretched muscle groups were the quadriceps and hamstrings, which were stretched for 2×45s per muscle group.
RESULTS: When clustering subjects by high tertile (HP, N.=7) and low tertile (LP, N.=7) Yo-Yo IR2 results (High and low performance group, respectively), LP displayed a significant impairment after SS for both the peak power (EXP=621.4±46.6 W, CON= 667.2±58.3 W; P=0.038; difference of 7.4%) and average power (EXP=481.5±34.0 W, CON= 502.8±37.9 W; P=0.018; difference of 4.4%).In contrast, SS did not alter power output in HP peak power (W) P=0.064, average power (W) P=0.239 or minimum power (W) P=0.167.
CONCLUSIONS: Therefore, SS can decrease subsequent anaerobic performance in less-fit young soccer players on Yo-Yo IR2.


KEY WORDS: Soccer; Anaerobic threshold; Exercise test

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