Sport Science Department at Cambridge United Football Club, Cambridge, United Kingdom.
Performance Services Department Norwich City Football Club, Norwich, United Kingdom.
J Strength Cond Res. 2023 Sep 1;37(9):e527-e534. doi: 10.1519/JSC.0000000000004458. Epub 2023 May 15.
Fleming, A, Walker, M, Armitage, M, Connor, M, and Beato, M. A comparison of training and match play external load during a congested in-season period in English League 2 Football. J Strength Cond Res 37(9): e527-e534, 2023-This study aimed to investigate if external training load metrics differ between training days and match day (MD) during a period of fixture congestion and to verify if external load metrics vary based on playing positions. Training and MD data were collected in a part of the competition phase of the 2020-2021 season (6 weeks) in the English Football League 2 ( N = 20 players, mean ± SD s: age = 24.4 ± 4.7 years). Global Navigation Satellite System units (Catapult S7 Vector 10 Hz) were used to monitor external load metrics. The metrics were duration of training, total distance (TD), high-speed running distance (HSR), sprinting distance, relative intensity (m/min), total accelerations (TotAcc) (>3 m·s -2 ), and total decelerations (TotDec) (<-3 m·s -2 ). This study found that duration, TD, relative intensity, HSR distance, sprint distance, TotAcc, and TotDec were different ( p < 0.001, d = small to moderate ) between MD and match day minus two (MD-2) or match day minus one (MD-1); however, during match day minus four (MD-4), only relative intensity was significantly lower ( p < 0.001) compared with MD output. Therefore, MD-4 was the most demanding training session of the week (after the MD), and during MD-2 and MD-1, coaches decreased players' load to favor players' readiness. Moreover, this study found that MD and MD-1 resulted in statistically different values across several metrics between different playing positions (defenders < midfielders and strikers), whereas metrics in MD-4 and MD-2 were not statistically different, which highlights that in these sessions, players have similar external loads independently from their playing positions.
弗莱明、A、沃克、M、阿米塔奇、M、康纳、M 和贝托、M. 在英格兰足球联赛 2 中一个密集的赛季期间，训练和比赛日外部负荷的比较。J 力量与体能研究 37(9): e527-e534, 2023. 本研究旨在调查在比赛密集期间，训练日和比赛日 (MD) 之间的外部训练负荷指标是否存在差异，并验证基于比赛位置的外部负荷指标是否存在差异。2020-2021 赛季比赛阶段的一部分（6 周）在英格兰足球联赛 2 中收集了训练和 MD 数据（N=20 名球员，均值±SD s：年龄=24.4±4.7 岁）。全球导航卫星系统单元（Catapult S7 Vector 10 Hz）用于监测外部负荷指标。这些指标包括训练持续时间、总距离 (TD)、高速跑距离 (HSR)、冲刺距离、相对强度 (m/min)、总加速度 (TotAcc)(>3 m·s -2 )和总减速 (TotDec)(<-3 m·s -2 )。本研究发现，MD 和 MD-2 或 MD-1 之间的持续时间、TD、相对强度、HSR 距离、冲刺距离、TotAcc 和 TotDec 存在差异（p<0.001，d 值为小到中）；然而，在 MD-4 时，只有相对强度显著降低（p<0.001）与 MD 输出相比。因此，MD-4 是一周中最具挑战性的训练课程（在 MD 之后），在 MD-2 和 MD-1 期间，教练降低了球员的负荷，以有利于球员的准备状态。此外，本研究发现，MD 和 MD-1 导致不同比赛位置（后卫<中场和前锋）之间的几个指标存在统计学上的差异值，而 MD-4 和 MD-2 的指标没有统计学上的差异，这表明在这些比赛中，球员的外部负荷相似，与他们的比赛位置无关。
