Journal article
Reliability and Validity of A-Mode Ultrasound to Quantify Body Composition
Journal of orthopaedic trauma, Vol.33(9), pp.472-477
09/01/2019
DOI: 10.1097/BOT.0000000000001498
PMID: 31083015
Abstract
Objective: Immobilization and inadequate nutrition after high-energy trauma result in loss of lean muscle mass. Body composition [percent body fat (%BF), fat mass (FM), fat-free mass (FFM)] is traditionally quantified with techniques that require expensive equipment and/or ionizing radiation. The purpose of this study was to assess reliability and validity of amplitude-mode (A-mode) ultrasound (US) to quantify body composition for use in a randomized clinical trial assessing interventions to prevent muscle loss in young individuals after high-energy musculoskeletal trauma.
Methods: Thirty-one volunteer subjects underwent body composition assessments using A-mode US and air displacement plethysmography (ADP). Independent raters performed 2 serial US measures. The same raters performed body composition assessment in 12 consecutive subjects that sustained acute musculoskeletal trauma indicated for surgery. Test-retest and inter-rater reliability were assessed using intraclass correlation coefficient (ICC). Agreement between US and ADP was assessed with Bland-Altman analysis.
Results: Test-retest and inter-rater reliability was excellent for volunteer subjects, with ICC values (%BF, FM, and FFM) of 0.87, 0.90, and 0.99 (rater 1); 0.80, 0.82, and 0.98 (rater 2). FFM measured by US was strongly correlated with ADP measures (r = 0.9635, P < 0.05). Bland-Altman analysis demonstrated no systematic bias between US and ADP measures of body composition. In trauma subjects, the inter-rater reliability was excellent, with ICCs of 0.96, 0.98, and 0.99 for %BF, FM, and FFM, respectively.
Conclusions: A-mode US is a relatively low-cost tool that provides reliable estimates of body composition and is a viable alternative for monitoring body composition in young, healthy patients.
Details
- Title: Subtitle
- Reliability and Validity of A-Mode Ultrasound to Quantify Body Composition
- Creators
- Nathan Hendrickson - University of IowaJohn Davison - Univ Iowa Hosp & Clin, Iowa City, IA 52242 USALuke Schiller - Univ Iowa Hosp & Clin, Iowa City, IA 52242 USAMichael Willey - Univ Iowa Hosp & Clin, Iowa City, IA 52242 USA
- Resource Type
- Journal article
- Publication Details
- Journal of orthopaedic trauma, Vol.33(9), pp.472-477
- DOI
- 10.1097/BOT.0000000000001498
- PMID
- 31083015
- NLM abbreviation
- J Orthop Trauma
- ISSN
- 0890-5339
- eISSN
- 1531-2291
- Publisher
- Lippincott Williams & Wilkins
- Number of pages
- 6
- Grant note
- Orthopaedic Trauma Association American Academy of Orthopaedic Surgeons, Board of Specialty Societies Quality and Patient Safety Action Fund T35HL007485 / NATIONAL HEART, LUNG, AND BLOOD INSTITUTE; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Heart Lung & Blood Institute (NHLBI)
- Language
- English
- Date published
- 09/01/2019
- Academic Unit
- Orthopedics and Rehabilitation; Injury Prevention Research Center; Internal Medicine
- Record Identifier
- 9984304695702771
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