使用加速度计测量运动可靠性：Fitbit与ActiGraph对比
Measuring Reliability of Movement With Accelerometry: Fitbit Versus ActiGraph.
作者信息
Rowe Veronica T, Neville Marsha
机构信息
Veronica T. Rowe, PhD, OTR/L, is Assistant Professor, Department of Occupational Therapy, University of Central Arkansas, Conway;
Marsha Neville, PhD, OT, is Associate Professor, School of Occupational Therapy, Texas Woman's University, Dallas.
出版信息
Am J Occup Ther. 2019 Mar/Apr;73(2):7302205150p1-7302205150p6. doi: 10.5014/ajot.2019.030692.
OBJECTIVE
We sought to determine the reliability of the Fitbit Flex™ compared with the ActiGraph Bluetooth Smart wGT3X-BT wireless activity monitor and to contribute to the clinical utility of accelerometry measurement of upper extremity (UE) movement.
METHOD
Two studies were conducted at different sites with healthy adult participants. In Study 1, participants wore both accelerometers on both wrists during everyday activities for a 24-hr period. In Study 2, participants wore both accelerometers on the dominant wrist for 4 hr during an active period of the day. All participants wore the accelerometers during regular daily activities.
RESULTS
Data recorded from the Fitbit and the ActiGraph showed a high positive correlation; however, the Fitbit recorded significantly fewer movements than the ActiGraph.
CONCLUSION
Although the Fitbit and the ActiGraph measure UE activity similarly, the Fitbit was not as sensitive as the ActiGraph. This study provides informative data on the clinical utility of the Fitbit compared with the ActiGraph.
目的
我们试图确定Fitbit Flex™与ActiGraph蓝牙智能wGT3X - BT无线活动监测器相比的可靠性，并为上肢（UE）运动加速度测量的临床应用提供参考。
方法
在不同地点对健康成年参与者进行了两项研究。在研究1中，参与者在日常活动期间双手腕都佩戴这两种加速度计，持续24小时。在研究2中，参与者在一天的活动期间，在优势手腕上佩戴这两种加速度计4小时。所有参与者在日常常规活动期间都佩戴加速度计。
结果
Fitbit和ActiGraph记录的数据显示出高度正相关；然而，Fitbit记录的运动明显少于ActiGraph。
结论
尽管Fitbit和ActiGraph对UE活动的测量方式相似，但Fitbit不如ActiGraph敏感。本研究提供了关于Fitbit与ActiGraph相比临床应用的信息性数据。
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