Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, 81746-7344, Iran.
Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal.
BMC Pediatr. 2022 Apr 11;22(1):196. doi: 10.1186/s12887-022-03257-7.
The aims of this study were to analyze the relationships between minutes of play (MP) and maturity status, fitness, and hormonal levels and to explain how those measures influence the time of play.
Twenty-six youth soccer players U15 participated in this study over a full-season period. Anthropometric measures, maturity status, growth hormone (GH), insulin-like growth factor and physical levels such as maximal oxygen uptake (VO), fatigue index, countermovement jump (CMJ) performance were collected. At the end-season, players were assessed in 6 different tests over four days.
VO largely correlated with GH (r = 0.57) and CMJ (r = 0.51). Also, GH largely correlated with CMJ (r = 0.55). MP had moderate correlations with VO (r = 0.44) and CMJ (r = 0.42). Multiple linear regression with maturation, physical fitness and hormonal levels explained R of 0.62 of the MP (F (8, 17) = 3.47, p = 0.015). Although each independent variable alone was not able to determine the playing time, when using the interactions, the model significantly explained the MP.
The combination of maturity status, physical fitness, and hormonal levels seem to play a determinant role in explaining the match participation in youth soccer players.
本研究旨在分析比赛时间（MP）与成熟度状态、体能和激素水平之间的关系，并解释这些测量指标如何影响比赛时间。
26 名 U15 青少年足球运动员参与了本研究，研究周期为一整个赛季。收集了人体测量指标、成熟度状态、生长激素（GH）、胰岛素样生长因子以及最大摄氧量（VO）、疲劳指数、反跳式纵跳（CMJ）等体能指标。在赛季末，球员们在四天内进行了 6 项不同的测试。
VO 与 GH（r=0.57）和 CMJ（r=0.51）有较大相关性。GH 与 CMJ 也有较大相关性（r=0.55）。MP 与 VO（r=0.44）和 CMJ（r=0.42）有中度相关性。成熟度、体能和激素水平的多元线性回归解释了 MP 的 0.62 的 R（F（8, 17）=3.47，p=0.015）。尽管每个独立变量本身都无法确定比赛时间，但使用相互作用时，该模型能够显著解释 MP。
成熟度状态、体能和激素水平的组合似乎在解释青少年足球运动员的比赛参与中起着决定性作用。
