Development of Criteria for Assessing Nutritional Status in Moscow Adults Using Bioimpedance Analysis Data

Objective. To develop the criteria for assessing nutritional status in Moscow adults using bioimpedance analysis data.

Materials and methods. The research used data from a non-clinical, cross-sectional, observational study on the body composition of Moscow adults aged 18-96 in Moscow health centers between 2010 and 2019 by the method of bioimpedance analysis. A total of 340,814 persons were assessed, including 96,780 men and 244,034 women. Bioimpedance measurements were taken using bioimpedance analyzers according to a standard four-electrode assessment scheme in the supine position of patients with disposable bioadhesive ECG-electrodes. The relative fat mass (RFM) was assessed using the percentage of fat mass (%FM) and the fat mass index (FMI). The criteria for assessing RFM were the cut-offs of %FM and FMI calculated based on the centiles of BMI thresholds according to the IOTF ageand sex-specific criteria. Polynomial smoothing was then applied. In the same way, the criteria for assessing the relative fat-free mass (RFFM) were derived based on the cut-offs of the fat-free mass index (FFMI).

Results. Diagnostic tables were designed to determine the RFM and RFFM in Moscow adults. The prevalence of normal weight obesity was assessed.

Conclusion. In conjunction with the previously developed criteria for assessing the nutritional status of Moscow children and adolescents, the study results can be used in clinical, preventive, or sports medicine to diagnose and correct nutritional status disorders as well as to monitor physical development.

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