Pediatr Exerc Sci. 2021 Dec 21;34(3):119-124. doi: 10.1123/pes.2021-0048. Print 2022 Aug 1.
The aim of this study was 2-fold: (1) to assess and compare the external and internal load of elite young soccer players during competitive microcycles and (2) to describe the training/match ratios (TMr) in elite male youth soccer players.
Twenty-one youth soccer players were monitored using a 10-Hz global positioning system. Total distance covered, running distance (RD), high-speed RD, sprint distance, number of accelerations and decelerations, player load, and rated perceived exertion were recorded during training sessions and matches. The TMr was calculated for each load measure. All variables were also normalized dividing the load per minute of activity.
The RD, high-speed running, and sprint distance were higher 3 days before the match and 2 days before match compared with the rest of the training sessions. However, accelerations, decelerations, and player load were higher 4 days before match than other sessions. Besides this, the TMr of RD, high-speed running, and sprint distance were associated with lower values than the TMr of total distance covered, accelerations, decelerations, and player load. The match constituted the highest load during competitive microcycle.
The present data support the idea that youth soccer coaches and practitioners must consider relative training load according to match demands to better manage and evaluate player periodization.
本研究旨在：（1）评估和比较精英年轻足球运动员在竞争微周期中外在和内在负荷；（2）描述精英男性青年足球运动员的训练/比赛比（TMr）。
21 名青年足球运动员使用 10Hz 全球定位系统进行监测。在训练和比赛期间记录总距离、跑动距离（RD）、高速 RD、冲刺距离、加速和减速次数、球员负荷和感知用力。为每个负荷指标计算 TMr。所有变量也通过将每活动分钟的负荷除以归一化。
比赛前 3 天和比赛前 2 天的 RD、高速跑和冲刺距离均高于其他训练课。然而，比赛前 4 天的加速、减速和球员负荷比其他课程更高。除此之外，RD、高速跑和冲刺距离的 TMr 值与总距离、加速、减速和球员负荷的 TMr 值相比，较低。比赛在竞争微周期中构成了最高的负荷。
本研究数据支持这样一种观点，即青年足球教练和从业者必须根据比赛要求考虑相对训练负荷，以更好地管理和评估球员的周期性。
