Bioelectric Impedance Phase Angle and Body Composition in Russian Children Aged 10–16 Years: Reference Values and Correlations

We describe the results of anthropological study of healtly Russian children which included both anthropometry and bioimpedance analysis of body composition (n=946). The whole-body impedance was measured according to a conventional tetrapolar scherme using BIA analyzer ABC-01 "Medass" (SRC Medass, Russia). We report a normal ranges for phase angle and BIA body composition parameters, such as absolute and relative contents of fat (FM, %FM) and fat-free mass (FFM) for boys and girls depending on age. FFM was assessed using Houtkooper equation. The obtained estimate of body composition were compared with those derived from skinfold anthropometry using Slaughter, Deurenberg, Matiegka, and other equation. Also, the results of correlation and factor analysis of phase angle and BIA body composition with various anthropometric indexes are discussed.