Accepted for/Published in: JMIR Research Protocols
Date Submitted: Jun 9, 2020
Date Accepted: Jul 14, 2020
Validity and reliability assessment of step and distance measurement from a low-cost consumer-based hip and wrist activity monitors: a study protocol
ABSTRACT
Background:
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 both the validity and the reliability of low-cost consumer-based hip and wrist activity, with regards more specifically to both the measurements of step counts and distance traveled while walking.
Objective:
The aim of the present study is hence to assess the validity and the reliability of step and distance measurement from a low-cost consumer-based hip and wrist activity monitors specific to 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 (1) the sensor placement on the human body and (2) the walking task being performed.
Methods:
Thirty healthy participants will be instructed to wear simultaneously 4 Nakosite PBN 2433™ activity monitor, namely 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-meters indoor corridor under 3 walking speeds: very slow speed, slow speed and usual speed. In study 2, participants will be required to complete the following 3 conditions performed ad usual walking speed: walking on flat ground, upstairs and downstairs.
Results:
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.
Conclusions:
To the best of our knowledge, this is the first study that examines both the validity and the reliability of both step and distance measurement during walking using the Nakosite PBN 2433™ activity monitor. Results of the present study will beneficially provide information on the effects of this activity monitor’s placement, walking speed and walking tasks on both the validity and the reliability of step and distance measurement. We believe such information is of utmost importance to general consumers, clinicians and researchers Clinical Trial: No trial regisdtration since this is not a clinicla trial protocol
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