Validity and reliability of accelerations and orientations measured using wearable sensors during functional activities

Cudejko, Tomasz, Button, Kate ORCID: https://orcid.org/0000-0003-1073-9901 and Al-Amri, Mohammad ORCID: https://orcid.org/0000-0003-2806-0462 2022. Validity and reliability of accelerations and orientations measured using wearable sensors during functional activities. Scientific Reports 12 , 14619. 10.1038/s41598-022-18845-x

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Abstract

Wearable sensors may enable the assessment of movement in a real-world setting, but they are not yet a standard practice in the analysis of movement due to the unknown accuracy and reliability with respect to different functional activities. Here, we established the concurrent validity and test–retest reliability of accelerations and orientations measured using affordable novel sensors during squats, jumps, walking and stair ambulation. In this observational study, participants underwent three data collection sessions during one day. Accelerations and orientations from sacrum, thigh and shank were collected using these sensors and already validated gold-standard sensors as the criterion method. We assessed validity by comparing the similarity of signal waveforms with the Linear Fit Method and by comparing mean differences in range values with the Bland–Altman plots. Reliability was assessed by calculating interclass correlation coefficient and standard error of measurements of the range values. Concurrent validity was from fair to excellent in 91% of the cases for accelerations and in 84.4% for orientations. Test–retest reliability of accelerations was from fair to excellent in 97% of cases when the sensors were attached by a researcher, and in 84.4% of cases when the sensors were attached by participants. Test–retest reliability of orientations was from fair to excellent in 88.9% of cases when the sensors were attached by a researcher, and in 68.9% of cases when the sensors were attached by participants. In conclusion, the new affordable sensors provide accurate measures of accelerations and orientations during multiple functional activities in healthy adults. Reliability of the orientations may depend on the ability to replicate the same position of the sensor under test–retest conditions.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Healthcare Sciences
Additional Information:	This article is licensed under a Creative Commons Attribution 4.0 International License
Publisher:	Nature Research
ISSN:	2045-2322
Funders:	European Regional Development Fund
Related URLs:	Project
Date of First Compliant Deposit:	29 August 2022
Date of Acceptance:	22 August 2022
Last Modified:	06 May 2023 20:52
URI:	https://orca.cardiff.ac.uk/id/eprint/152190

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