Cited by 73Body Composition Measurement TechniquesElectrical and Bioimpedance TomographyObesity, Physical Activity, Diet

Validity and accuracy of regional bioelectrical impedance devices to determine whole-body fatness

Lukaski, Henry C., Siders, William A.·2003·Nutrition

Abstract

Objective Growing emphasis on obesity as a risk factor for chronic diseases and commercial availability of impedance devices for the at-home assessment of body fatness have stimulated the need for a critical evaluation of the validity of these instruments. This study determined the reproducibility and accuracy of two commercial impedance devices that use upper (hand-to-hand) or lower (foot-to-foot) body contact electrode placements in adults with a wide range of body fatness. Methods Body composition was assessed with dual x-ray absorptiometry in apparently healthy adults (62 women and 48 men) ages 21 to 60 y, with a range in body mass index of 18.6 to 40.5 kg/m2. Variability in body fatness predicted with the regional body impedance devices was determined in 10 adults on 5 consecutive d. A 50-kHz, tetrapolar bioelectrical impedance plethysmograph with surface electrode placements on the upper and lower limbs was used to determine reference regional and whole-body impedance values. Results Variability in body mass (1%) over 5 d was less than body fatness predicted with the upper (2-10%) and lower (3-5%) body devices. Regional and whole-body impedance values were different (P < 0.05) in the women, whereas upper and lower body values were lower (P < 0.05) than whole-body impedance in the men. Dual x-ray absorptiometric determinations of body fatness were similar to predictions based on models derived from physical characteristics (age, stature, body mass, and sex) but significantly different (P < 0.05) from estimates from the impedance devices, which underestimated body fatness. Bias in predictions of body fatness with the regional devices was systematically (P < 0.0001) related to body fatness. Conclusion Use of regional impedance devices to assess body fatness is limited by a lack of precision and accuracy.

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Crossref · 10.1016/s0899-9007(03)00166-7

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  • Single-frequency devices and segmental measures demonstrate the largest differences when compared to DXA, with the inaccuracy increasing in conjunction with higher levels of BMI.

    “However, single-frequency devices and segmental measures demonstrate the largest differences when compared to DXA, with the inaccuracy increasing in conjunction with higher levels of BMI [55,56,57,58].”

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Authors
Lukaski, H. C., & Siders, W. A.
Affiliations
Agricultural Research Service (US)
Corresponding author
Lukaski, Henry C.
Venue
Nutrition
Publisher
Elsevier BV
Published
2003-10
Volume
19
Issue
10
Pages
851-857
ISSN
0899-9007 (ISSN-L)
OpenAlex
W1998236052
Cited by
73
References
26
Citations by year
2026: 1 · 2025: 2 · 2024: 2 · 2023: 4 · 2022: 4 · 2021: 3 · 2019: 2 · 2018: 2 · 2017: 5 · 2016: 3 · 2015: 7 · 2014: 3 · 2013: 2 · 2012: 5
FWCI
1.54
Type
journal article
Language
en
Open access
closed
Locations
  • Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrical and Bioimpedance Tomography
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
Keywords
bioimpedance, adiposity, device validity, measurement accuracy, reproducibility, body composition, obesity, dual-energy X-ray absorptiometry
MeSH terms
Adipose Tissue, Adult, Body Composition, Electric Conductivity, Electrodes, Female, Humans, Male, Middle Aged, Obesity, Sensitivity and Specificity, Reproducibility of Results, Absorptiometry, Photon, Electric Impedance

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