The influence of maturation, fitness, and hormonal indices on minutes played in elite youth soccer players: a cross-sectional study
Ebrahim Eskandarifard, Hadi Nobarı, Filipe Manuel Clemente, Rui Silva, Cain C. T. Clark, Hugo Sarmento, António J. Figueiredo
Abstract
Abstract Background The main purpose of this study was to investigate the relationships between minutes played (MP) with maturity status, fitness, and hormonal levels, and to quantify their influence on minutes played. Methods Twenty-four elite youth soccer players under-16 years participated in this study, over a full-season period. Anthropometric measures, maturity status, hormonal and physical fitness levels were collected. Participants were monitored during the season. After the end-season, players were assessed in 6 different tests over a four-day period. Results The maximum oxygen consumption (V̇O 2max ) was strongly correlated with MP (r = 0.75), maturity offset (r = 0.52), and countermovement jump (r = 0.53). Multiple linear regression explained 76% of MP (F (8, 15) = 6.05, p = 0.001), with an R2 of 0.76. Moreover, Growth hormone (GH) and V̇O 2max . were the most influential factors in MP (F (2, 21) = 17.92, p ≤ 0.001), with an R2 of 0.63. Conclusion High levels of GH and V̇O 2max have a preponderant role in MP by elite youth soccer players, it appears to be more pragmatic to consider other contextual dimensions, as they can impact selection for competition and minutes of participation in a match.