Changes of Body Composition and Bioimpedance During Pregnancy-Pilot Study in Czech Republic

Monitoring of specific physiological values during gestation process is a very important process. Body composition values and directly measured bioimpedance values however are currently not included into this monitoring although these values can help to track healthy process of gestation. In this work we are presenting new possible measurements of progress of body composition and electrical values during whole gestation process in Czech population. Bioelectrical resistance, reactance and body composition values were measured by BIA device Tanita MC 180 MA on 5, 50, 250 and 500 kHz. BIA measurements from 10 women were evaluated during second and third trimester of pregnancy. We discovered changes in directly measured electrical values and calculated values during a gestation period. Statistically significant increase was discovered in calculated body composition values: Weight (kg) (P = 0.005), Fat mass (kg) (P = 0.01), TBW (kg) (P = 0.005). Statistical significant (P = 0.05) decrease on all used frequencies was discovered in resistance and reactance values. Average decrease of resistance across all frequencies was 73.17 +/- 7.62 Omega which presented 11.92 +/- 0.07%. Results suggest that body composition values and especially directly measured values that are not equation dependent can give precise description for gestation process and can be used as one of the markers of healthy gestation process in future. Hence this measuring and evaluating of directly measured electrical values and body composition values can give us more information about gestation process.