Carlin Thomas, Vuillerme Nicolas
AGEIS, University Grenoble Alpes, Grenoble, France.
LabCom Telecom4Health, University Grenoble Alpes & Orange Labs, Grenoble, France.
JMIR Res Protoc. 2021 Jan 13;10(1):e21262. doi: 10.2196/21262.
Self-tracking via wearable and mobile technologies is becoming an essential part of personal health management. At this point, however, little information is available to substantiate the validity and reliability of low-cost consumer-based hip and wrist activity monitors, with regard more specifically to the measurements of step counts and distance traveled while walking.
The aim of our study is to assess the validity and reliability of step and distance measurement from a low-cost consumer-based hip and wrist activity monitor specific in various walking conditions that are commonly encountered in daily life. Specifically, this study is designed to evaluate whether and to what extent validity and reliability could depend on the sensor placement on the human body and the walking task being performed.
Thirty healthy participants will be instructed to wear four PBN 2433 (Nakosite) activity monitors simultaneously, with one placed on each hip and each wrist. Participants will attend two experimental sessions separated by 1 week. During each experimental session, two separate studies will be performed. In study 1, participants will be instructed to complete a 2-minute walk test along a 30-meter indoor corridor under 3 walking speeds: very slow, slow, and usual speed. In study 2, participants will be required to complete the following 3 conditions performed at usual walking speed: walking on flat ground, upstairs, and downstairs. Activity monitor measured step count and distance values will be computed along with the actual step count (determined from video recordings) and distance (measured using a measuring tape) to determine validity and reliability for each activity monitor placement and each walking condition.
Participant recruitment and data collection began in January 2020. As of June 2020, we enrolled 8 participants. Dissemination of study results in peer-reviewed journals is expected in spring 2021.
To the best of our knowledge, this is the first study that examines the validity and reliability of step and distance measurement during walking using the PBN 2433 (Nakosite) activity monitor. Results of this study will provide beneficial information on the effects of activity monitor placement, walking speed, and walking tasks on the validity and reliability of step and distance measurement. We believe such information is of utmost importance to general consumers, clinicians, and researchers.
INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/21262.
通过可穿戴和移动技术进行自我追踪正成为个人健康管理的重要组成部分。然而，目前几乎没有信息能够证实基于消费者的低成本髋部和腕部活动监测器的有效性和可靠性，尤其是在步行步数和行走距离的测量方面。
我们研究的目的是评估一种基于消费者的低成本髋部和腕部活动监测器在日常生活中常见的各种步行条件下进行步数和距离测量的有效性和可靠性。具体而言，本研究旨在评估有效性和可靠性是否以及在多大程度上取决于传感器在人体上的放置位置和所执行的步行任务。
30名健康参与者将被要求同时佩戴4个PBN 2433（Nakosite）活动监测器，每个髋部和每个腕部分别佩戴一个。参与者将参加两个相隔1周的实验环节。在每个实验环节中，将进行两项独立的研究。在研究1中，参与者将被要求在3种步行速度下沿着30米长的室内走廊完成2分钟的步行测试：非常慢、慢和正常速度。在研究2中，参与者将被要求以正常步行速度完成以下3种情况：在平地上行走、上楼梯和下楼梯。将计算活动监测器测量的步数和距离值，并与实际步数（通过视频记录确定）和距离（使用卷尺测量）进行比较，以确定每个活动监测器放置位置和每种步行条件下的有效性和可靠性。
参与者招募和数据收集于2020年1月开始。截至2020年6月，我们招募了8名参与者。预计将于2021年春季在同行评审期刊上发表研究结果。
据我们所知，这是第一项使用PBN 2433（Nakosite）活动监测器研究步行过程中步数和距离测量的有效性和可靠性的研究。本研究结果将提供有关活动监测器放置位置、步行速度和步行任务对步数和距离测量的有效性和可靠性影响的有益信息。我们相信这些信息对普通消费者、临床医生和研究人员至关重要。
国际注册报告标识符（IRRID）：DERR1-10.2196/21262。
