The reliability of muscle quantity and quality measured with extended-field-of-view ultrasound at nine body sites

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Abstract

Objective
Measuring muscle quantity and quality is very important because the loss of muscle quantity and quality is associated with several adverse effects specifically in older people. Ultrasound is a method widely used to measure muscle quantity and quality. One problem with ultrasound is its limited field of view, which makes it impossible to measure the muscle quantity and quality of certain muscles. In this study, we aimed to evaluate the intra- and inter-rater reliability of extended-field-of-view (EFOV) ultrasound for the measurement of muscle quantity and quality in nine muscles of the limbs and trunk.

Methods
Two examiners took two ultrasound EFOV images with a linear probe from each of the muscle sites. The intraclass correlation coefficient (ICC) was used, and the standard error of measurement and coefficient of variation were calculated.

Results
Intra-rater reliability was good to excellent (ICC = 0.2–1.00) for all muscle measurements. The inter-rater reliability for most of the muscle measurements was good to excellent (ICC = 0.82–0.98). Inter-rater reliability was moderate (0.58–0.72) for some muscle quantity measurements of the tibialis anterior, gastrocnemius, rectus femoris, biceps femoris and triceps brachii muscles.

Conclusion
Muscle quantity and quality can be measured reliably using EFOV US.
Original languageEnglish
Pages (from-to)1544-1549
Number of pages5
JournalUltrasound in Medicine and Biology
Volume49
Issue number7
DOIs
Publication statusPublished - 2023

Bibliographical note

Funding Information:
Because the data are confidential and disclosure was not approved for this purpose, we are unable to share the data. We are, however, willing to share the data in the context of research collaboration. For this purpose, an e-mail can be sent to the corresponding author.

Publisher Copyright:
© 2023 The Authors

Copyright:
Copyright 2023 Elsevier B.V., All rights reserved.

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