FFM was calculated using a sex-and age-specific bioelectrical impedance analysis equation reported by Deurenberg et al. (1991).
Skeletal muscle mass was also determined through bioelectrical impedance analysis, and was calculated using Janssen's equation.
Total fat mass and total fat percentage were calculated using the Body Composition Analyzer Scale BF-350 (Tanita Corporation) which uses leg-to-leg bioelectrical impedance analysis(BIA).
Fat-free mass (kg), fat mass (kg), and total body fat (%BF) was assessed by bioelectrical impedance analysis (RJL systems, Prizum, BIA-101S, MI, USA) using standardized procedures and calculated using the equation of Lukaski et al (1986).
Body mass index will be calculated using height measured using a portable stadiometer (Portable Height Scale, Mentone Educational Center, Australia) to the nearest 0.01 m and body weight to the nearest 0.1 kg via calibrated bioelectrical impedance scales (Tanita TBF-521, Tanita Corporation, Tokyo).
Another method of calculating fat composition was also deployed in this study using bioelectrical impedance analysis.
Fat free mass (kg) was estimated using bioelectrical impedance (BIA310, Biodynamics, US).
Body weight and height, and waist and hip circumferences were recorded, BMI was calculated, and the proportions of body fat and lean body mass (LBM) were determined using bioelectrical impedance (single frequency, 50 kHz; Animeter, HTS, Odense, Denmark).
We compared the fluid volume parameters in women undergoing gynaecological surgery for benign and malignant conditions before and after surgery using bioelectrical impedance vectors.
Percentage of body fat was measured using bioelectrical impedance (BIA-101, RJL systems, Detroit, MI, USA).
