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Comparison of body composition analysis methods among centenary women: Seeking simpler methods
Mariana Gf Duarte1, Paulo O Duarte1, Anderson Pelichek1
1Division of General Internal and Geriatric Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.
SAGE Open Medicine
|July 31, 2019
Summary
Bioimpedance and skinfolds are reliable for assessing body composition in centenarians. These methods show good agreement with deuterium oxide for fat and lean mass, respectively.
Area of Science:
- Gerontology
- Human Physiology
- Body Composition Analysis
Background:
- Accurate body composition assessment is crucial for understanding health in aging populations.
- Centenarians present unique physiological characteristics requiring specialized evaluation methods.
Purpose of the Study:
- To compare the accuracy of commonly used body composition tools (anthropometry, bioimpedance) against the deuterium oxide method in centenarians.
- To determine the most reliable methods for assessing fat mass and lean mass in this unique demographic.
Main Methods:
- An exploratory cross-sectional study involving women aged 100 years and above living at home.
- Body composition was measured using skinfolds (Jackson and Pollock, Durnin and Womersley equations), bioimpedance, and the deuterium oxide method.
Main Results:
- Bioimpedance showed better agreement with deuterium oxide for fat mass (Lin's coefficient = 0.70).
- The Durnin and Womersley skinfold equation demonstrated better agreement for lean mass (Lin's coefficient = 0.51).
- Sixty-four percent of subjects had a Body Mass Index below 22 kg/m².
Conclusions:
- Bioimpedance is a suitable method for evaluating fat mass in centenarians.
- The Durnin and Womersley skinfold equation can be effectively used to assess lean mass in centenarians.
- These findings support the use of accessible tools for body composition analysis in the very elderly.
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