Analysis of Fitness Status Variations of Under-16 Soccer Players Over a Season and Their Relationships With Maturational Status and Training Load.
Hadi Nobari,Ana Filipa Silva,Filipe Manuel Clemente,Marefat Siahkouhian,Miguel Ángel García-Gordillo,Jose C. Adsuar,Jorge Pérez-Gómez +6 more
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In this paper, the variations of maximal oxygen consumption (VO2max), maximal heart rate (HRmax), heart rate rest, acceleration, maximal speed, agility, anaerobic sprint test (RAST) of peak power (RPP), RAST of minimum power, average power, and fatigue index (RFI) during the competition season, using maturation status (MS) and accumulated training load (ATL) as covariates.Abstract:
The purposes of this study were: (i) to analyze the variations of maximal oxygen consumption (VO2max), maximal heart rate (HRmax), heart rate rest, acceleration, maximal speed, agility, anaerobic sprint test (RAST) of peak power (RPP), RAST of minimum power, RAST of average power (RAP), and RAST of fatigue index (RFI) during the competition season, using maturation status (MS) and accumulated training load (ATL) as covariates; (ii) to describe differences between responders and non-responders in relationship with baseline levels Twenty-three elite players of the same team competing in the national under-16 competitions were evaluated for 20 weeks in period 1 (P1= Before league), middle (Mid= mid league), and period 2 (P2= After league) Significant improvements were noticed in VO2max, RPP and RAP between P1 and Mid, with small, moderate and trivial effect sizes, respectively Between Mid and P2 and in the entire period of evaluation, increases in maximal speed, RAP (both with small effect sizes), RPP and RFI (both with moderate effect sizes) were registered When analyzing responders and non-responders, only HRmax (between P1 to P2) showed no differences between those groups All these variables seemed to be influenced by ATL and MS, since when included as covariates, the differences were vanished Additionally, almost all variables presented differences between responders and non-responders highlighting the individual responses to trainingread more
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The effects of 14-week betaine supplementation on endocrine markers, body composition and anthropometrics in professional youth soccer players: a double blind, randomized, placebo-controlled trial.
TL;DR: Betaine supplementation may enhance body composition outcomes when supplemented chronically during an exercise program as discussed by the authors, and the effect of Betaine supplementation on development-related hormones, body composition, and anthropometrics in professional youth soccer players during a competitive season.
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Variations of Training Workload in Micro- and Meso-Cycles Based on Position in Elite Young Soccer Players: A Competition Season Study.
TL;DR: Differences between training workload and matches can be a good guide for coaches, who have a special understanding of what causes the most load in training programs.
Journal ArticleDOI
Association between Training Load and Well-Being Measures in Young Soccer Players during a Season
Hadi Nobari,Ana Ruivo Alves,Hamed Haghighi,Filipe Manuel Clemente,Jorge Carlos-Vivas,Jorge Pérez-Gómez,Luca Paolo Ardigò +6 more
TL;DR: In this article, the correlations among weekly (w) acute workload, chronic workload (wCW), acute/chronic workload ratio (wACWR), training monotony (wTM), training strain (wTS), sleep quality (wSleep), delayed onset muscle soreness (wDOMS), fatigue (wFatigue), stress (wStress), and Hooper index (wHI) in pre-, early, mid-, and end-of-season were analyzed.
Journal ArticleDOI
Effects of 14-weeks betaine supplementation on pro-inflammatory cytokines and hematology status in professional youth soccer players during a competition season: a double blind, randomized, placebo-controlled trial.
TL;DR: In this article, the effects of betaine supplementation on tumor necrosis factor alpha (TNF-α), interleukins-1 beta (IL-1β), − 6, and the complete blood cell (CBC) count in professional youth soccer players during a competitive season were investigated.
Journal ArticleDOI
Somatotype, accumulated workload, and fitness parameters in elite youth players: associations with playing position
Hadi Nobari,Rafael Oliveira,Filipe Manuel Clemente,Jorge Pérez-Gómez,Elena Pardos-Mainer,Luca Paolo Ardigò +5 more
TL;DR: In this article, the authors describe anthropometric, maturation, and somatotype differences of players based on playing positions, and analyze variations of accumulated load training (AcL) and fitness parameters between playing positions; and finally, explain the variation of maximal oxygen uptake (VO2max) and peak power (PP) through the AcL, body fat (BF), maturity, maturity, and fitness levels.
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