VALIDITY AND RELIABILITY OF 15 HZ GLOBAL POSITIONING SYSTEM UNITS FOR ASSESSING THE ACTIVITY PROFILES OF UNIVERSITY FOOTBALL PLAYERS
VALIDITY AND RELIABILITY OF 15 HZ GLOBAL POSITIONING SYSTEM UNITS FOR ASSESSING THE ACTIVITY PROFILES OF UNIVERSITY FOOTBALL PLAYERS
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DOI：
10.1519/jsc.0000000000002076
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发表时间：
2019-05-01
影响因子：
3.2
通讯作者：
Cornish, Stephen
中科院分区：
文献类型：
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作者：
Barr, Matthew;Beaver, Tim;Cornish, Stephen
全球定位系统（GPS）装置最近在监控和评估足球运动员的工作量方面变得流行。目前，缺乏研究，检查这些系统的有效性和可靠性，因此，目前的研究的目的是确定是否15赫兹单位（SPI HPU; GPSports，堪培拉，澳大利亚）可以准确地用来描述足球的身体需求。一系列的队列研究进行了加拿大大学足球运动员（n = 28）。为了评估这些装置测量高速短跑能力的准确性，12名运动员在穿着这些装置的情况下进行了多次电子计时的36.6米短跑。为了评估单元间的可靠性，5名球员在训练期间每人佩戴2个单元。通过比较2场比赛中专家评分员在视频上记录的铲球和盖帽的正确数量与单元记录的碰撞数量，对单元测量碰撞的有效性进行了分析。这些单位在测量高短跑速度时是准确的（变异系数[CV] = 0.9%），在记录步行和短跑CV之间速度的距离时具有良好的单位间可靠性（1.4-7.8%）。随附软件使用的碰撞算法过滤器被发现在精确度和召回率之间有最好的平衡，使用2.65g的线路员和2.9g的非线路员。所使用的设备在提供可接受的有效和可靠的信息来描述足球的身体需求方面是有效的。位置特定的运动区时，建议使用GPS单位与足球运动员。
Global positioning system (GPS) units have recently become popular for monitoring and assessing the workloads of football players. Currently, there is a lack of studies examining the validity and reliability of these systems for that purpose, so the aim of the current study was to determine whether 15 Hz units (SPI HPU; GPSports, Canberra, Australia) could accurately be used to describe the physical demands of football. A series of cohort studies were conducted with Canadian university football players (n = 28). To assess the accuracy of the units' ability to measure high-velocity sprinting, 12 players performed multiple electronically timed 36.6 m sprints while wearing the units. To assess the interunit reliability, 5 players wore 2 units each during a training session. An analysis of the units' validity for measuring collisions was performed by comparing the correct number of tackles and blocks notated on video by an expert rater in 2 games with the number of collisions recorded by the units. The units were accurate for measuring high-sprinting velocities (coefficient of variation [CV] = 0.9%) and had good interunit reliability for recording distances at velocities between walking and sprinting CV (1.4-7.8%). The collision algorithm filter the accompanying software uses was found to have its best balance between precision and recall using a cut-off of 2.65g for linemen and 2.9g for nonlinemen. The devices used are effective at providing acceptably valid and reliable information to describe the physical demands of football. Position-specific locomotor zones are recommended when using GPS units with football players.