Department of Sport and Physical Activity, Edge Hill University, Ormskirk, United Kingdom.
School of Science and Sport, University of the West of Scotland, Paisley, Scotland.
J Strength Cond Res. 2019 Jul;33(7):1912-1920. doi: 10.1519/JSC.0000000000002132.
Doncaster, G and Unnithan, V. Between-game variation of physical soccer performance measures in highly trained youth soccer players. J Strength Cond Res 33(7): 1912-1920, 2019-To assess the between-game variation in measures of physical performance during 11 vs. 11 soccer match play, over a short period, in highly trained youth soccer players. A single-cohort, observational, study design was used. Physical match performance data were collected from 17, male, highly trained, youth soccer players (age, 13.3 ± 0.4 years) over 3, 2 × 20 minutes, 11 vs. 11 matches. Using 10-Hz global positioning systems, the variables selected for analyses were total distance (TD), high-speed running (HSR), very high-speed running (VHSR), number of high-speed running efforts (HSReff), and number of very high-speed running efforts (VHSReff). Match data were also separated into cumulative 5-minute epochs, to identify the peak 5-minute epoch and the mean of the cumulative 5-minute epochs for each match. Variability was quantified using the coefficient of variation (CV), standard error of measurement, and intraclass correlation coefficient. Between- and within-player smallest worthwhile changes (SWC) were also calculated for each variable to aid in the interpretation of the data. Analysis of the variance between games reported a low CV for TD (3.8%) but larger CVs for HSR (33.3%), HSReff (35.4%), and VHSR and VHSReff (59.6 and 57.4%, respectively). Analysis of 5-minute epochs (peak and average) found an increase in the CVs beyond that of the values reported for the whole match. Between-player SWC in high-intensity physical performance data ranged from 24.7 to 42.4%, whereas within-player SWC ranged from 1.2 to 79.9%. The between-game variability of high-intensity and very high-intensity activities in youth soccer players, across 3 soccer matches over a short period (2 weeks), is relatively "large" and specific to the individual, thus highlighting the need for caution when interpreting physical performance data between games and players.
唐卡斯特，G 和乌尼坦，V. 高度训练的青年足球运动员在 11 对 11 足球比赛中的体能表现指标的比赛间变化。J 力量与调节研究 33(7):1912-1920,2019-评估在短时间内，高度训练的青年足球运动员在 11 对 11 足球比赛中体能表现指标的比赛间变化。使用单队列、观察性研究设计。从 17 名男性、高度训练的青年足球运动员（年龄 13.3±0.4 岁）中收集了 3 场 2×20 分钟的 11 对 11 比赛的体能比赛数据。使用 10-Hz 全球定位系统，选择用于分析的变量是总距离（TD）、高速跑动（HSR）、超高高速跑动（VHSR）、高速跑动次数（HSReff）和超高高速跑动次数（ VHSReff）。比赛数据还分为累计 5 分钟的时间间隔，以确定每个比赛的高峰 5 分钟间隔和累计 5 分钟时间间隔的平均值。使用变异系数（CV）、测量标准误差和组内相关系数来量化变异性。还为每个变量计算了球员间和球员内最小有意义变化（SWC），以帮助解释数据。报告的方差分析表明 TD 的 CV 较低（3.8%），但 HSR（33.3%）、HSReff（35.4%）和 VHSR 和 VHSReff（59.6%和 57.4%）的 CV 较大。对 5 分钟时间间隔（高峰和平均值）的分析发现，CV 增加超过了整个比赛报告的值。高强度体能表现数据的球员间 SWC 范围为 24.7%至 42.4%，而球员内 SWC 范围为 1.2%至 79.9%。在短时间内（2 周）进行的 3 场足球比赛中，青年足球运动员高强度和超高强度活动的比赛间变异性相对较大，且因人而异，因此在解释比赛间和球员间的体能表现数据时需要谨慎。
