Prediction of fat-free mass in young children using bioelectrical impedance spectroscopy.

ABSTRACT:

Background

Bioimpedance devices are practical for measuring body composition in preschool children, but their application is limited by the lack of validated equations.

Objectives

To develop and validate fat-free mass (FFM) bioimpedance prediction equations among New Zealand 3.5-year olds, with dual-energy X-ray absorptiometry (DXA) as the reference method.

Methods

Bioelectrical impedance spectroscopy (SFB7, ImpediMed) and DXA (iDXA, GE Lunar) measurements were conducted on 65 children. An equation incorporating weight, sex, ethnicity, and impedance was developed and validated. Performance was compared with published equations and mixture theory prediction.

Results

The equation developed in ~70% (n = 45) of the population (FFM [kg] = 1.39 + 0.30 weight [kg] + 0

SUBMITTER: Lyons-Reid J 

PROVIDER: S-EPMC7616480 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature