JOURNAL ARTICLE

EFFECT OF STRENGTH AND HIGH-INTENSITY TRAINING ON JUMPING, SPRINTING AND INTERMITENT ENDURANCE PERFORMANCE IN PREPUBERTAL SOCCER PLAYERS

Carlos Ferrete, Bernardo Requena, Luís Suarez-Arrones, Eduardo Sáez de Villarreal
Journal of Strength and Conditioning Research 2013 May 21
23698082
The purpose of this study was to examine the effects of a 26-week on-field combined strength and high-intensity training on physical performance capacity among prepubertal soccer players who were undetraking a competitive phase of training. Twenty-four prepubertal soccer players between the age of 8-9 years were randomly assigned to 2 groups: a control (C) (n=13) and an experimental group (S) (n=11). Both groups performed an identical soccer training program, while the S group also performed combined strength and high-intensity training before the soccer specific training. The 15-m sprint time (sec), countermovement vertical jump (CMJ) displacement, Yo-Yo intermittent endurance test (Yo-YoIE), and Sit & Reach flexibility were each measured before (baseline) and after 9 (T2), 18 (T3) and 26 weeks (post-test) of training. There were no significant differences between the groups in any of the variables tested at baseline. After 26 weeks significant improvements were found in CMJ (6.72%; ES = 0.37), Yo-YoIE (49.57%, ES = 1.39), and Flexibility (7.26%; ES = 0.37) variables for the S group. Conversely, significant decreases were noted for the CMJ (-10.82%; ES = 0.61) and flexibility (-13.09%; ES = 0.94) variables in C group. A significant negative correlation was found between 15m sprint time and CMJ (r=-0.77) and Yo-YoIE (r=-0.77) in S group. Specific combined strength and high-intensity training in prepubertal soccer players for 26 weeks produced a positive effect on performance qualities highly specific to soccer. Therefore, we propose modifications to current training methodology for prepubertal soccer players to include strength and high-intensity training for athlete preparation in this sport.

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