Comparison of Bioelectrical Impedance Analysis and Air Displacement Plethysmography in Community-Dwelling Older Adults

Clinicians and researchers use body composition measurements to identify individuals who may be at risk of adverse health complications. This study compared two commonly used two-compartmental anthropometric models (bioelectrical impedance analysis [BIA] and air displacement plethysmography [ADP]) t...

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Bibliographic Details
Published in:Journal of applied gerontology 2016-05, Vol.35 (5), p.474-488
Main Authors: Smale, K. Brent, McIntosh, Emily I., Vallis, Lori Ann
Format: Article
Language:English
Subjects:
Adipose Tissue
Adiposity
Aged
Aged, 80 and over
Body Mass Index
Comparative analysis
Correlation analysis
Electric Impedance
Female
Health
Healthy Volunteers
Humans
Male
Males
Older people
Ontario
Plethysmography
Risk
Risk assessment
Sex differences
Values
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Summary:Clinicians and researchers use body composition measurements to identify individuals who may be at risk of adverse health complications. This study compared two commonly used two-compartmental anthropometric models (bioelectrical impedance analysis [BIA] and air displacement plethysmography [ADP]) to determine whether these two cost-effective methods would provide similar fat free mass index (FFMI) values in a mixed and sex-separated sample population of healthy older adults. Community-dwelling older adults (N = 37, 18 men) aged 74.5 ± 5.2 years participated. FFMIBIA was correlated with FFMIADP (r = .916); however, these correlations were markedly reduced when the population was split by sex (r < .60). The level of agreement between the difference values (FFMIBIA – FFMIADP) fluctuated ± 2.1 kg/m2 (illustrated via Bland-Altman plots), but these differences were not statistically different from 0. Findings from the current work suggest that clinicians must be cautious when using portable devices such as BIA to assess FFMI in an older adult population.
ISSN:0733-4648
1552-4523
DOI:10.1177/0733464813515088