This study compares the performances obtained during soccer-specific field tests of the 20 m multistage shuttle run test (MST) and the Yo-Yo intermittent endurance test (YIET), with the measured maximal oxygen uptake (VO2max) obtained in both field tests as well as that obtained in the traditional test of running to exhaustion on a treadmill (TRT), in young trained soccer players. Twenty-one Na...

The purpose of the study was to evaluate the developmental changes in performance in a repeated-sprint ability (RSA) test in young soccer players of contrasting maturity status. A total of 83 regional level Portuguese youth soccer players, aged 11-13 years at baseline was assessed annually. Stature, body mass, 7x34.2-m sprint protocol (25-s active recovery), 20-m multi-stage continuous shuttle ...

INTRODUCTION/OBJECTIVE Aids cases are steadily increasing among young people and there are few studies describing young male vulnerability to HIV. A study was carried out aiming at developing a STD/AIDS prevention program for junior professional soccer players. METHODS Study participants were twenty-five junior soccer players of a major league professional team of the city of Campinas, Brazil...

The main purpose of this study was to test the Sport Commitment Model in young soccer players. Participants' ( N = 437) age ranged from 14 to 16 years. Based on the sport commitment model proposed by Scanlan and colleagues, 6 scales and 28-items constitute the Sport Commitment Questionnaire (SCQ). Results of this study provide some support for the reliability and validity of the SCQ, using a sa...

The aim of the study was to analyze differences in power performance and morphological characteristics of young Croatian soccer players with respect to their team positions and to establish correlations between the power performance variables. Anthropometric characteristics and jumping and sprint performances were analyzed for 45 soccer players (age 14-15; mean body height 175.4 +/- 6.61 cm; bo...

ABSTRACT Introduction Core strength training is a modern method of approach that matches the current demand for more resilient physique on young players. Although it was initially conceived as complementary to contribute and agility, other benefits have been observed soccer athletes nowadays. Among under-explored effect athletes’ stability. Objective This article explores core results stability...

The aim of this study was to investigate the acute effects of 16 different combinations to cause the postactivation potentiation (PAP) in elite young soccer players. Squat exercise in 4 different intensities (40%, 60%, 80%, and 100% one-repetition maximum [1RM]) was performed and its effects were evaluated in the performance of countermovement jump (CMJ), after 4 different recovery times (1, 3,...

IMPORTANCE Despite recent increased awareness about sports concussions, little research has evaluated concussions among middle-school athletes. OBJECTIVES To evaluate the frequency and duration of concussions in female youth soccer players and to determine if concussions result in stopping play and seeking medical care. DESIGN, SETTING, AND PARTICIPANTS Prospective cohort study from March 2...