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Ultrasound and MRI measured changes in muscle mass gives different estimates but similar conclusions: a Bayesian approach

European Journal of Clinical Nutrition volume 73, pages 1203–1205 (2019)Cite this article

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Abstract

The purpose of this paper was to use a Bayesian approach to compare the relative change in muscle size between magnetic resonance imaging (MRI) and ultrasound measured muscle thickness (MTH) following 6 weeks of concentric and eccentric blood flow restricted exercise. Changes at each site were as follows: concentric 50% site (MRI: 10.2%, MTH: 8.7%), concentric 10 cm site (MRI: 12%, MTH: 4.5%), eccentric 50% site (MRI: −1.7%, MTH: 2.6%), and eccentric 10 cm site (MRI: 5.2%, MTH: 0.5%). When testing the difference between estimates using a default prior of 0.707, we provided evidence that the estimate at the 50% site of the concentric arm was similar between ultrasound and MRI [Median % (95% credible interval): −1.1 (−8.2, 5.8)]. However, evidence for other sites suggested differences or a degree of uncertainty. Both methods produce similar conclusions about the presence of growth but the magnitude of that change appears different at most sites.

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Authors and Affiliations

  1. Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, MS, USA

    Jeremy P. Loenneke, Scott J. Dankel, Zachary W. Bell, Robert W. Spitz & Takashi Abe

  2. School of Nursing, Seirei Christopher University, Shizuoka, Japan

    Tomohiro Yasuda

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  1. Jeremy P. Loenneke
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  2. Scott J. Dankel
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  3. Zachary W. Bell
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  4. Robert W. Spitz
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  5. Takashi Abe
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  6. Tomohiro Yasuda
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Contributions

JPL: study design, performed statistical analysis, analysis and interpretation of the data, and drafting of the manuscript; and SJD, ZWB, RWS, TA, TY: study design, interpretation of the data, and the drafting of the manuscript.

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Correspondence to Jeremy P. Loenneke.

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Loenneke, J.P., Dankel, S.J., Bell, Z.W. et al. Ultrasound and MRI measured changes in muscle mass gives different estimates but similar conclusions: a Bayesian approach. Eur J Clin Nutr 73, 1203–1205 (2019). https://doi.org/10.1038/s41430-019-0431-z

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  • DOI: https://doi.org/10.1038/s41430-019-0431-z

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