Critical speed models of high-resolution speed-duration profiles describe peak running demands in soccer

IF 1.5 4区 教育学 Q3 HOSPITALITY, LEISURE, SPORT & TOURISM
Eliran Mizelman, Aaron Pearson, Dani Chu, David C Clarke
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Abstract

The purpose of this study was to characterize critical speed (CS) models for summarizing high-resolution speed-duration profiles from GPS tracking data obtained from soccer players. GPS data from 15 male NCAA Division I soccer players were collected during practices and games over a 6-week period. Moving averages of the speed data were computed for each file for duration windows spanning 0.1 to 600 seconds at 0.1-second resolution. Speed-duration profiles for each session and for the entire sampling period (“global”) were generated for each player by selecting the maximal mean speeds for each duration. Four models were fit to the profiles: the two-parameter CS (CS2) model, the three-parameter CS (CS3) model, the omni-domain speed-duration (OmSD) model, and the five-parameter logistic (5PL) model. The 5PL, CS3, and OmSD models exhibited similar goodness of fits, and all outperformed the CS2 model. Similar CS estimates were obtained for each model, whereas maximum speed ( Smax) estimates were lower for OmSD compared to the 5PL. Players exhibited a range of parameter values for CS, D′, and Smax. Smax and CS estimated from session-specific speed-duration profiles were on average higher for games compared to practices. We conclude that CS models are useful for empirically describing speed-duration profiles and for assessing peak running demands for soccer practices and games. The proposed approach could help coaches design practice activities to better mimic game demands.
高分辨率速度-持续时间曲线的临界速度模型描述了足球运动中的高峰跑步需求
本研究旨在确定临界速度(CS)模型的特征,以便从足球运动员的 GPS 跟踪数据中总结出高分辨率的速度-持续时间曲线。在为期 6 周的训练和比赛期间,收集了 15 名 NCAA 一级联盟男子足球运动员的 GPS 数据。以 0.1 秒的分辨率计算了每个文件的速度数据移动平均值,持续时间窗口从 0.1 秒到 600 秒不等。通过选择每个持续时间内的最大平均速度,为每个球员生成每次训练和整个采样期("全局")的速度-持续时间曲线。对剖面图拟合了四个模型:双参数 CS(CS2)模型、三参数 CS(CS3)模型、全域速度-持续时间(OmSD)模型和五参数逻辑(5PL)模型。5PL、CS3 和 OmSD 模型的拟合优度相似,均优于 CS2 模型。每个模型都获得了相似的 CS 估计值,而 OmSD 的最大速度(Smax)估计值低于 5PL 模型。运动员的 CS、D′ 和 Smax 参数值范围较大。与练习相比,根据特定训练阶段的速度-持续时间曲线估算出的比赛 Smax 和 CS 平均较高。我们得出的结论是,CS 模型可用于根据经验描述速度-持续时间曲线,以及评估足球训练和比赛的高峰跑步需求。所提出的方法可以帮助教练设计练习活动,以更好地模拟比赛需求。
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来源期刊
CiteScore
3.50
自引率
15.80%
发文量
208
期刊介绍: The International Journal of Sports Science & Coaching is a peer-reviewed, international, academic/professional journal, which aims to bridge the gap between coaching and sports science. The journal will integrate theory and practice in sports science, promote critical reflection of coaching practice, and evaluate commonly accepted beliefs about coaching effectiveness and performance enhancement. Open learning systems will be promoted in which: (a) sports science is made accessible to coaches, translating knowledge into working practice; and (b) the challenges faced by coaches are communicated to sports scientists. The vision of the journal is to support the development of a community in which: (i) sports scientists and coaches respect and learn from each other as they assist athletes to acquire skills by training safely and effectively, thereby enhancing their performance, maximizing their enjoyment of the sporting experience and facilitating character development; and (ii) scientific research is embraced in the quest to uncover, understand and develop the processes involved in sports coaching and elite performance.
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