Validity and intra-rater reliability of an Android phone application to measure cervical range-of-motion

Quek, June, Brauer, Sandra G., Treleaven, Julia, Pua, Yong-Hao, Mentiplay, Benjamin and Clark, Ross Allan (2014) Validity and intra-rater reliability of an Android phone application to measure cervical range-of-motion. Journal of NeuroEngineering and Rehabilitation, 11 1: 65.1-65.6. doi:10.1186/1743-0003-11-65

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Author Quek, June
Brauer, Sandra G.
Treleaven, Julia
Pua, Yong-Hao
Mentiplay, Benjamin
Clark, Ross Allan
Title Validity and intra-rater reliability of an Android phone application to measure cervical range-of-motion
Journal name Journal of NeuroEngineering and Rehabilitation   Check publisher's open access policy
ISSN 1743-0003
Publication date 2014-04-17
Year available 2014
Sub-type Article (original research)
DOI 10.1186/1743-0003-11-65
Open Access Status File (Publisher version)
Volume 11
Issue 1
Start page 65.1
End page 65.6
Total pages 6
Place of publication London, United Kingdom
Publisher BioMed Central Ltd.
Language eng
Subject 2742 Rehabilitation
2718 Health Informatics
Abstract Background: Concurrent validity and intra-rater reliability using a customized Android phone application to measure cervical-spine range-of-motion (ROM) has not been previously validated against a gold-standard three-dimensional motion analysis (3DMA) system. Findings. Twenty-one healthy individuals (age:31 ± 9.1 years, male:11) participated, with 16 re-examined for intra-rater reliability 1-7 days later. An Android phone was fixed on a helmet, which was then securely fastened on the participant's head. Cervical-spine ROM in flexion, extension, lateral flexion and rotation were performed in sitting with concurrent measurements obtained from both a 3DMA system and the phone.The phone demonstrated moderate to excellent (ICC = 0.53-0.98, Spearman ρ = 0.52-0.98) concurrent validity for ROM measurements in cervical flexion, extension, lateral-flexion and rotation. However, cervical rotation demonstrated both proportional and fixed bias. Excellent intra-rater reliability was demonstrated for cervical flexion, extension and lateral flexion (ICC = 0.82-0.90), but poor for right- and left-rotation (ICC = 0.05-0.33) using the phone. Possible reasons for the outcome are that flexion, extension and lateral-flexion measurements are detected by gravity-dependent accelerometers while rotation measurements are detected by the magnetometer which can be adversely affected by surrounding magnetic fields. Conclusion: The results of this study demonstrate that the tested Android phone application is valid and reliable to measure ROM of the cervical-spine in flexion, extension and lateral-flexion but not in rotation likely due to magnetic interference. The clinical implication of this study is that therapists should be mindful of the plane of measurement when using the Android phone to measure ROM of the cervical-spine.
Keyword Cervical range of motion
Inertial monitoring unit
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Health and Rehabilitation Sciences Publications
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