Mal J Nutr 22(2): 173 - 182, 2016

Body Fat Assessment of Young Syrian Adults Using Bioelectrical Impedance Analysis and Deuterium Dilution
Mahfouz Al-Bachir1,*& Ibrahim Othman2

1 Department of Radiation Technology, Atomic Energy Commission of Syria, Damascus, P.O. Box 6091, Syrian Arab Republic
2 Department of Physics, Atomic Energy Commission of Syria, Damascus, P.O. Box 6091, Syrian Arab Republic


ABSTRACT

Introduction: The purpose of this study was to compare body composition assessed by bioimpedance analysis (BIA) against deuterium dilution (D2O) techniques. Methods: This study was conducted on 215 young Syrian adults. Total body water (TBW), fat free mass (FFM) and fat mass (FM) compartments were calculated from the measurements of resistance made at 50 kHZ using the formula provided by the instrument manufacturer (Bodystat) and D2O equation. Bland-Altman plot analysis was used to compare methods, and linear regression analysis were performed to detect the relation between the variables (R2 = 0.81). Results: Percentage of body fat derived from BIA (16.2 ±7.3%) and D2O technique (21.32±6.42%) were significantly different (p<0.001). BIA body composition assessments provided good relative agreement with the selected criterion method of D2O as indicated by high correlation coefficients (r=0.91). Conclusion: When compared with D2O, BIA overestimated TBW and FFM, and underestimatd FM (P<0.001) in young adults (-5.2%; -3.4 kg).

Keywords: Bioelectrical impedance analysis, body composition, deuterium dilution technique

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