GT3X+accelerometer placement affects the reliability of step-counts measured during running and pedal-revolution counts measured during bicycling
GT3X+accelerometer placement affects the reliability of step-counts measured during running and pedal-revolution counts measured during bicycling
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DOI：
10.1080/02640414.2015.1096018
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发表时间：
2016-06-17
影响因子：
3.4
通讯作者：
Maly, Monica R.
中科院分区：
文献类型：
--
作者：
Gatti, Anthony A.;Stratford, Paul W.;Maly, Monica R.
加速度计提供了步数测量。GT3X+加速度计在不同解剖位置测量的步数和踏板转数的可靠性和有效性在文献中缺乏。本研究的目的是研究在跑步和骑自行车时将GT3X+放置在不同解剖位置所产生的步数和踏板转速计数的信度和有效性。22名健康成年人（14名男性和8名女性）在腰部、大腿和小腿各佩戴6个加速度计的情况下完成跑步和骑自行车活动（各5分钟）。在活动期间收集加速度计和视频数据。在跑步时安装在腰部和小腿上的加速度计测量的结果具有良好的信度和效度(信度：类内相关系数（ICC） 0.99；测量标准误差（SEM） 1.0步；效度：皮尔逊0.99)和在大腿和小腿骑自行车（信度：ICC 0.99; SEM 1.0革命；效度：皮尔逊0.99）。在跑步时腰部和小腿的测量值（ICC 0.98; SEM 1.6步）和在骑自行车时大腿和小腿的测量值（ICC 0.99; SEM 1.0转）之间发现了极好的可靠性。这些数据表明，GT3X+可以用于测量跑步时的步数和骑自行车时的踏板转数。两种活动只推荐小腿放置。
Accelerometers provide a measure of step-count. Reliability and validity of step-count and pedal-revolution count measurements by the GT3X+ accelerometer, placed at different anatomical locations, is absent in the literature. The purpose of this study was to investigate the reliability and validity of step and pedal-revolution counts produced by the GT3X+ placed at different anatomical locations during running and bicycling.Twenty-two healthy adults (14 men and 8 women) completed running and bicycling activity bouts (5 minutes each) while wearing 6 accelerometers: 2 each at the waist, thigh and shank. Accelerometer and video data were collected during activity.Excellent reliability and validity were found for measurements taken from accelerometers mounted at the waist and shank during running (Reliability: intraclass correlation (ICC) 0.99; standard error of measurement (SEM) 1.0 steps; Validity: Pearson 0.99) and at the thigh and shank during bicycling (Reliability: ICC 0.99; SEM 1.0 revolutions; Validity: Pearson 0.99). Excellent reliability was found between measurements taken at the waist and shank during running (ICC 0.98; SEM 1.6 steps) and between measurements taken at the thigh and shank during bicycling (ICC 0.99; SEM 1.0 revolutions). These data suggest that the GT3X+ can be used for measuring step-count during running and pedal-revolution count during bicycling. Only shank placement is recommended for both activities.