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Validity and intra-rater reliability of an Android phone application to measure cervical range-of-motion
journal contributionposted on 12.01.2021, 00:41 by June Quek, Sandra G Brauer, Julia Treleaven, Yong-Hao Pua, Benjamin MentiplayBenjamin Mentiplay, Ross Clark
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. © 2014 Quek et al.; licensee BioMed Central Ltd.
JQ received a PhD scholarship funded by Singapore General Hospital.
JournalJournal of NeuroEngineering and Rehabilitation
Article NumberARTN 65
Rights StatementThe Author reserves all moral rights over the deposited text and must be credited if any re-use occurs. Documents deposited in OPAL are the Open Access versions of outputs published elsewhere. Changes resulting from the publishing process may therefore not be reflected in this document. The final published version may be obtained via the publisher’s DOI. Please note that additional copyright and access restrictions may apply to the published version.
Science & TechnologyTechnologyLife Sciences & BiomedicineEngineering, BiomedicalNeurosciencesRehabilitationEngineeringNeurosciences & NeurologySpineWhiplashInertial monitoring unitPhoneCervical range of motionAGREEMENTNeckCervical VertebraeHumansRange of Motion, ArticularReproducibility of ResultsCellular PhoneAdultFemaleMaleMobile ApplicationsCell Phone