Agreement between supine and standing bioimpedance spectroscopy devices and dual‐energy X‐ray absorptiometry for body composition determination

Abstract

Background Research comparing bioimpedance spectroscopy (BIS) to dual-energy X-ray absorptiometry (DXA) is limited, especially with newer BIS devices that take measures in a standing position instead of the traditional supine position.Purpose The purpose of this study was to compare a standing BIS device (BIS STA ) and a supine BIS device (BIS SUP ) to DXA for measuring body fat percentage (BF%), fat mass (FM) and fat-free mass (FFM) in a cohort of male and female subjects displaying a wide range of ages and BMI levels. Methods Ninety-five subjects (30 AE 15 years, 170 AE 8Á0 cm, 72Á6 AE 14Á8 kg) participated in the study. Body composition measures were taken from BIS STA , BIS SUP and DXA during a single visit to the laboratory following an 8-to 12-h fast in a euhydration state. Results Supine BIS device and BIS STA produced r-values >0Á91 and low SEE values for all measurements compared to DXA. Effect sizes were 'trivial' for FFM comparing both BIS SUP and BIS STA to DXA (<0Á1) and 'small' for FM and BF% (<0Á39). Compared to DXA, BIS STA resulted in lower total (TE) and constant errors/mean differences (CE) (TE < 3Á6 kg, CE < À1Á82 kg) versus BIS SUP (TE < 4Á35 kg, CE < À3Á10 kg) for FFM. Conclusion Fat-free mass values for BIS STA resulted in the most comparable measurements to DXA with no mean differences and the lowest total error and effect size. However, the findings indicated both BIS devices may be acceptable alternatives to DXA for BF%, FM and FFM in clinical practice. BIS STA -DXA (FFM kg) BIS STA -DXA (FFM kg) BIS STA -DXA (FM kg) BIS STA -DXA (FM kg) BIS SUP -DXA (FFM kg) BIS SUP -DXA (FFM kg) BIS SUP -DXA (FM kg) BIS SUP -DXA (FM kg) BIS STA -DXA (BF%) BIS STA -DXA (BF%) BIS SUP -DXA (BF%) BIS SUP -DXA (BF%) Standing BIS (BIS STA ) v DXA Supine BIS (BIS SUP ) v DXA Figure 1 Bland-Altman plots comparing the standing (BIS STA ) and supine (BIS SUP ) bioimpedance devices to dual-energy X-ray absorptiometry (DXA) for fat-free mass (FFM), fat mass (FM) and body fat percentage (BF%). The solid line represents the constant error, the outside dashed lines represent the 95% limits of agreement and the dashed-dotted regression line represents the trend between the x-and y-axes.

Skeletal Muscle Myofibrillar Protein Abundance Is Higher in Resistance-Trained Men, and Aging in the Absence of Training May Have an Opposite Effect

“…Notably, USG levels in all participants were ≤1.020. Body composition was measured by bioelectrical impedance spectroscopy (BIS) using methods previously described (SOZO Device, ImpediMed, Limited, Brisbane, Qld, Australia) [14]. This method has been shown to produce test-retest intraclass correlation coefficients (ICC) >0.990 for whole body fat mass, fat-free mass, and percent body fat in 29 men and women with comparable results to dual-energy X-ray absorptiometry in 95 men and women [14].…”

“…Body composition was measured by bioelectrical impedance spectroscopy (BIS) using methods previously described (SOZO Device, ImpediMed, Limited, Brisbane, Qld, Australia) [14]. This method has been shown to produce test-retest intraclass correlation coefficients (ICC) >0.990 for whole body fat mass, fat-free mass, and percent body fat in 29 men and women with comparable results to dual-energy X-ray absorptiometry in 95 men and women [14]. Additionally, the BIS method used has been identified as an acceptable alternative to dual-energy X-ray absorptiometry for use in clinical practice for body composition analyses [14].…”

Body Positional Effects on Bioimpedance Spectroscopy Measurements for Lymphedema Assessment of the Arm

“…15,16 These devices are more convenient to use and are able to make measurements of all body segments simultaneously and save time by avoiding the need for the operator to move skin surface electrodes around the body and making repeat measurements. While these stand-on devices have been used extensively for body composition assessment [17][18][19][20] and to a limited extent for lymphedema assessment, 21 they have not been systematically assessed for comparability with conventional lead-type measurements. 22 van Zanten and Ward.…”

“…Thurlow et al and Esco et al reported that stand-on devices had several reported practical advantages, including permanently incorporated electrodes standardizing anatomical positioning and reduced total measurement time, all potential critical factors in obtaining accurate and precise measurements. 17,23 The aim of this study was to assess and compare BIS measurements made in three different body positions using two different impedance devices (lead device and stand-on device) in healthy women and those at risk of or living with arm lymphedema consequent to breast cancer treatment. Specifically, we plan to evaluate the following:…”

Cole-impedance parameters representing biceps tissue bioimpedance in healthy adults and their alterations following eccentric exercise

“…Tissue bioimpedance is related to the type of tissue, intra/extra cellular fluids, and overall tissue structure [3] . Bioimpedance measurements have been utilized for applications including: body composition determination [4] , [5] , clinical tomography [6] , cardiography [7] , respiratory monitoring [8] , and even food monitoring applications [9] . Bioimpedance is also currently being investigated as a noninvasive technique to characterize skeletal muscle tissue with a particular focus on assessing neuromuscular disorders [10] , [11] , [2] .…”