International Journal of Body Composition Research 2012 Vol. 10 No. 1: 15–20
A. Hamrani, H. Belghiti, K. El Kari, A. Barkat, H. Aguenaou and N. Mokhtar
Objectives: Determination of body composition by deuterium oxide dilution, development and validation of bioelectrical impedance prediction equation for Moroccan women in the 1st trimester of pregnancy.
Subjects and methods: 26 pregnant women in the 1st trimester aged 19-40 years from urban area were included. Anthropometric parameters were measured, total body water, fat-free mass and fat mass were determined by deuterium oxide dilution, whereas resistance and reactance were measured at 50 kHz by bioelectrical impedance.
Results: The prediction equation is: fat-free mass by ²H2O in kg = 0.788 × Height² in cm²/Resistance in Ω + 0.279 × Body weight in kg - 6.824; with R² = 0.92 and standard error of the estimate = 2.06 kg. The bias = -1.26 kg, confidence interval was -2.80, +0.26 kg and the pure error was 2.53.
Conclusions: The BIA equation is accurate, precise and valid to be used to assess body composition in Moroccan pregnant women during the 1st trimester.