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首页> 美国卫生研究院文献>Journal of Sports Science Medicine >The Accuracy of a Low-Cost GPS System during Football-Specific Movements
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The Accuracy of a Low-Cost GPS System during Football-Specific Movements

机译：足球运动期间低成本GPS系统的准确性

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An affordable player monitoring solution could make the evaluation of external loading more accessible across multiple levels of football (soccer). The present study aimed to determine the accuracy of a newly designed and low-cost Global Positioning System (GPS) whilst performing match-specific movement patterns. Sixteen professional male football players (24 ± 3 years) were assigned a GPS device (TT01, Tracktics GmbH, Hofheim, Germany) and completed two experimental trials. In each trial, a continuous protocol including seven movements (sideways cornering, diagonal cornering, accelerating, decelerating, backwards jogging, shuttle running, and skipping) adding up to 500 m, was completed. Time-motion data was compared with criterion distance and velocity (photo-cell timing gates and radar). Validity was assessed through the standard error of the estimate (SEE) and reliability through the coefficient of variation (CV; both with 95% confidence limits). For the total distance covered during the protocol, the system was found to be valid (SEE = 3.1% [2.2; 5.8]) and reliable (intra-device CV = 2.0% [1.2; 7.6]). Similar results were found for velocity (SEE = 3.4% [2.6; 4.8], CV = 4.7% [3.2; 8.5]). In conclusion, the present GPS system, a low-cost solution, was found to be a valid and reliable tool for measuring physical loading during football-specific movements.
机译：经济实惠的球员监控解决方案可以在多级足球（足球）中更易于使用外部负荷。本研究旨在确定新设计和低成本的全球定位系统（GPS）的准确性，同时执行特定于特定的运动模式。十六名专业男性足球运动员（24±3年）被分配了GPS设备（TT01，Tracktics GmbH，Hofheim，德国），并完成了两项实验试验。在每次试验中，完成了连续协议，包括七个动作（横向转弯，对角线转弯，加速，减速，向后慢跑，跳转，跑步和跳跃），完成高达500米。将时间运动数据与标准距离和速度进行比较（光电细胞正时栅极和雷达）。通过估计的标准误差（参见）和通过变异系数来评估有效性（参见）和可靠性（CV;两者都有95％的置信限制）。对于协议期间涵盖的总距离，系统被发现有效（见= 3.1％[2.2; 5.8]）和可靠（内部CV = 2.0％[1.2; 7.6]）。发现类似的结果用于速度（参见= 3.4％[2.6; 4.8]，CV = 4.7％[3.2; 8.5]）。总之，目前的GPS系统是一种低成本解决方案，是一种有效且可靠的工具，用于在特定于足球运动期间测量物理加载。

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