Accuracy of Distance Recordings in Eight Positioning-Enabled Sport Watches: Instrument Validation Study
Accuracy of Distance Recordings in Eight Positioning-Enabled Sport Watches: Instrument Validation Study
复制标题
八款支持定位的运动手表的距离记录精度：仪器验证研究
DOI：
10.2196/preprints.17118
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发表时间：
2019
影响因子：
5
通讯作者：
T. Wyss
中科院分区：
文献类型：
--
作者：
Rahel Gilgen;T. Schweizer;T. Wyss
背景精英运动员和休闲跑步者依靠支持全球导航卫星系统（GNSS）的运动手表的准确性来监控和管理训练活动。然而，缺乏科学证据证明这种运动手表的准确性。目的研究Apple、Coros、Garmin、Polar和Suunto生产的8款市售运动手表在不同区域和不同速度下记录距离的准确性。此外，对影响测量质量的潜在参数进行了评价。方法在城市、森林和田径场进行3 × 12次测量，同时在各种户外条件下步行、跑步和骑自行车。结果选择的参考距离范围为404.0 ~ 4296.9m。对于所有测量区域，记录的系统误差（±一致性限值）范围为3.7（±195.6）m至-101.0（±231.3）m，平均绝对百分比误差范围为3.2%至6.1%。只有Polar的GNSS接收器显示总体误差<5%。一般来说，在城市和森林地区，记录的距离被显著低估（所有P值<0.04），准确性较低，而在田径场地区，75%（6/8）的运动手表被高估，但准确性良好。此外，跑步期间评估的数据显示，与步行和骑自行车活动相比，大多数设备的错误率显着更高。结论记录的距离可能被低估了9%。然而，建议使用所有经过调查的运动腕表，尤其是在开阔区域进行距离记录时。
Background Elite athletes and recreational runners rely on the accuracy of global navigation satellite system (GNSS)–enabled sport watches to monitor and regulate training activities. However, there is a lack of scientific evidence regarding the accuracy of such sport watches. Objective The aim was to investigate the accuracy of the recorded distances obtained by eight commercially available sport watches by Apple, Coros, Garmin, Polar, and Suunto when assessed in different areas and at different speeds. Furthermore, potential parameters that affect the measurement quality were evaluated. Methods Altogether, 3 × 12 measurements in urban, forest, and track and field areas were obtained while walking, running, and cycling under various outdoor conditions. Results The selected reference distances ranged from 404.0 m to 4296.9 m. For all the measurement areas combined, the recorded systematic errors (±limits of agreements) ranged between 3.7 (±195.6) m and –101.0 (±231.3) m, and the mean absolute percentage errors ranged from 3.2% to 6.1%. Only the GNSS receivers from Polar showed overall errors <5%. Generally, the recorded distances were significantly underestimated (all P values <.04) and less accurate in the urban and forest areas, whereas they were overestimated but with good accuracy in 75% (6/8) of the sport watches in the track and field area. Furthermore, the data assessed during running showed significantly higher error rates in most devices compared with the walking and cycling activities. Conclusions The recorded distances might be underestimated by up to 9%. However, the use of all investigated sport watches can be recommended, especially for distance recordings in open areas.