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Multivariate Profiles of Selected versus Non-Selected Elite Youth Brazilian Soccer Players

机译:精选和未精选的优秀青年巴西足球运动员的多元特征

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摘要

This study determined whether a multivariate profile more effectively discriminated selected than non-selected elite youth Brazilian soccer players. This examination was carried out on 66 youth soccer players (selected, n = 28, mean age 16.3 ± 0.1; non-selected, n = 38, mean age 16.7 ± 0.4) using objective instruments. Multivariate profiles were assessed through anthropometric characteristics, biological maturation, tactical-technical skills, and motor performance. The Student’s t-test identified that selected players exhibited significantly higher values for height (t = 2.331, p = 0.02), lean body mass (t = 2.441, p = 0.01), and maturity offset (t = 4.559, p < 0.001), as well as performed better in declarative tactical knowledge (t = 10.484, p < 0.001), shooting (t = 2.188, p = 0.03), dribbling (t = 5.914, p < 0.001), speed – 30 m (t = 8.304, p < 0.001), countermovement jump (t = 2.718, p = 0.008), and peak power tests (t = 2.454, p = 0.01). Forward stepwise discriminant function analysis showed that declarative tactical knowledge, running speed –30 m, maturity offset, dribbling, height, and peak power correctly classified 97% of the selected players. These findings may have implications for a highly efficient selection process with objective measures of youth players in soccer clubs.
机译:这项研究确定了多变量配置文件是否比未选择的精英巴西青年足球运动员更有效地区分了选择的球员。使用客观工具对66名青年足球运动员(选定,n = 28,平均年龄16.3±0.1;未选定,n = 38,平均年龄16.7±0.4)进行了此项检查。通过人体测量学特征,生物成熟度,战术技术技能和运动表现来评估多元分布。学生的t检验表明,选定的球员的身高(t = 2.331,p = 0.02),瘦体重(t = 2.441,p = 0.01)和成熟度偏移(t = 4.559,p <0.001)表现出明显更高的值,以及在陈述性战术知识(t = 10.484,p <0.001),射击(t = 2.188,p = 0.03),运球(t = 5.914,p <0.001),速度– 30 m(t = 8.304)方面表现更好,p <0.001),反向运动跳跃(t = 2.718,p = 0.008)和峰值功率测试(t = 2.454,​​p = 0.01)。向前的逐步判别函数分析表明,陈述性的战术知识,奔跑速度–30 m,成熟度偏移,盘带,高度和峰值功率正确分类了所选球员的97%。这些发现可能会对足球俱乐部中青年球员的客观测量产生高效的选择过程。

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