Association Between Endocrine Markers, Accumulated Workload, and Fitness Parameters During a Season in Elite Young Soccer Players.

Autor: Nobari H; Department of Physical Education and Sports, University of Granada, Granada, Spain.; Health, Economy, Motricity and Education Research Group, Faculty of Sport Sciences, University of Extremadura, Cáceres, Spain.; Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran.; Sports Scientist, Sepahan Football Club, Isfahan, Iran., Mainer-Pardos E; Health Sciences Faculty, Universidad San Jorge, Zaragoza, Spain., Adsuar JC; Health, Economy, Motricity and Education Research Group, Faculty of Sport Sciences, University of Extremadura, Cáceres, Spain., Franco-García JM; Health, Economy, Motricity and Education Research Group, Faculty of Sport Sciences, University of Extremadura, Cáceres, Spain., Rojo-Ramos J; Health, Economy, Motricity and Education Research Group, Faculty of Sport Sciences, University of Extremadura, Cáceres, Spain., Cossio-Bolaños MA; Universidad Católica del Maule, Talca, Chile., Urzua Alul L; Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Santiago, Chile., Pérez-Gómez J; Health, Economy, Motricity and Education Research Group, Faculty of Sport Sciences, University of Extremadura, Cáceres, Spain.
Jazyk: angličtina
Zdroj: Frontiers in psychology [Front Psychol] 2021 Aug 31; Vol. 12, pp. 702454. Date of Electronic Publication: 2021 Aug 31 (Print Publication: 2021).
DOI: 10.3389/fpsyg.2021.702454
Abstrakt: The purpose of this study was to analyze differences between endocrine markers in soccer players, based on playing positions, and correlations between endocrine markers (testosterone, cortisol, growth hormone, and insulin-like growth factor-1), with accumulated workload training and fitness parameters [maximal oxygen uptake (VO 2max ), countermovement jump (CMJ), and isometric maximal strength (1-RM) of the knee for hamstring (ISH) and quadriceps (ISQ) muscles] during early-, mid-, and end-seasons. Twenty-four elite soccer players under 17 participated in this study. The results showed that there was no difference between levels of the endocrine markers among the different positions of the players. Significant correlations were observed between endocrines parameters and fitness performance (ISQ, ISH, VO 2max , and CMJ). Regression analysis showed that 1-RM and VO 2max were the best predictors of endocrine markers. These findings demonstrated that the activity profiles of youth soccer players were not influenced by endocrine markers. Also, it may be assumed that endocrines levels can be used to better explain the physical capacities of this population. Finally, endocrines markers may help to predict changes in 1-RM and VO 2max .
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
(Copyright © 2021 Nobari, Mainer-Pardos, Adsuar, Franco-García, Rojo-Ramos, Cossio-Bolaños, Urzua Alul and Pérez-Gómez.)
Databáze: MEDLINE
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