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From the Journals

Ultrasound Models Estimate Whole-Body Muscle Mass

New equations incorporating cross-sectional area improve estimation accuracy.

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  • 1

    Study included 211 healthy Caucasian adults aged 29-

  • 2

    Best model had adjusted R² of 0.948 and SEE of 1.6 kg.

  • 3

    Combined muscle thickness and CSA measurements improved accuracy.

  • 4

    Intra-rater reliability ranged from 0.75 to 0.

  • 5

    Standard error of measurement was 0.2 kg, not clinically significant.

  • 6

    Research highlights limitations of existing models for diverse populations.

  • 7

    Future studies needed for applicability in nonhealthy populations.

Original Source(s)

Ultrasound Models Estimate Whole-Body Muscle Mass

  • by Kathryn Wighton

  • March 26, 2026

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