Accuracy of Wristband Activity Monitors during Ambulation and Activities
Accuracy of Wristband Activity Monitors during Ambulation and Activities
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DOI：
10.1249/mss.0000000000000984
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发表时间：
2016-10-01
期刊：
影响因子：
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通讯作者：
Hsu, Miao-Ju
中科院分区：
文献类型：
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作者：
Chen, Ming-De;Kuo, Chang-Chih;Hsu, Miao-Ju
目的 本研究的主要目的是检验腕带活动监测器在跑步机上以规定速度和短时间的常见日常活动下测量步数的准确性。方法 30 名健康年轻人在跑步机上以不同速度（54、80、107 和 134 mmin(-1)）行走或慢跑时，在双手腕上佩戴三个腕带活动监测器，并进行六种不同的常见日常活动，每次活动各 5 分钟。这些显示器包括 Fitbit Flex、Garmin Vivofit 和 Jawbone UP。常见的日常活动情况包括两次坐位活动（玩平板电脑游戏、叠衣服）、两次步行活动（推婴儿车、拎包）和两次爬楼梯活动（上下）。计算绝对百分比误差 (APE) 分数，以检查实际观察到的步数与监视器检测到的步数之间的准确性。结果 在跑步机条件下，APE 范围在 1.5% 到 9.6% 之间。所有监视器 (APE < 2.5%) 的准确性以更快的速度 (134 mmin(-1)) 得到提高。在常见的日常活动条件下，折叠衣物时会记录大量步数。所有监测仪都显着低估了推婴儿车时的实际步数（所有 APE >33%）。在常见的日常活动条件下，佩戴在惯用手腕上时，观察到较高的 APE。 结论 与较慢的速度相比，所检查的腕带活动监测器在测量 80 至 134 mmmin(-1) 之间的步数时更准确。在每种常见的日常活动条件下，显示器和活动之间的准确度相差很大，佩戴在非惯用手手腕上时误差较小。这些结果将有助于研究人员了解腕带活动监测器的使用和准确性，以供未来研究使用。
Purpose The main purpose of this study was to examine the accuracy of wristband activity monitors on measuring step counts at prescribed speeds on a treadmill and under short bouts of common daily activities.Methods Thirty healthy young adults wore three wristband activity monitors on both wrists while walking or jogging on a treadmill at different speeds (54, 80, 107, and 134 mmin(-1)) and performing six different common daily activities for 5 min each. The monitors included the Fitbit Flex, the Garmin Vivofit, and the Jawbone UP. The common daily activity conditions included two sitting activities (playing a tablet computer game and folding laundry), two walking activities (pushing a stroller, carrying a bag), and two stair climbing activities (down and up). Absolute percentage error (APE) scores were computed to examine the accuracy between actual observed steps and monitor-detected steps.Results Under the treadmill condition, the APE ranged between 1.5% and 9.6%. Accuracy was improved at faster speeds (134 mmin(-1)) for all the monitors (APE < 2.5%). In the common daily activity conditions, substantial step counts were registered when folding laundry. All monitors significantly underestimated actual steps (all APE >33%) when pushing a stroller. Higher APE was observed when worn on the dominant wrist under the common daily activity conditions.Conclusions The wristband activity monitors examined were more accurate for measuring step counts between 80 and 134 mmin(-1) as compared with a slower speed. Accuracy under each common daily activity condition ranged widely between monitors and activity, with less error when worn on the nondominant wrist. These results will help to inform researchers on the use and accuracy of wristband activity monitors for future studies.