Utility of multi-frequency bioelectrical impedance compared to deuterium dilution for assessment of total body water

作者：Anderson Lindsey J; Erceg David N; Schroeder E Todd^*

来源：Nutrition and Dietetics, 2015, 72(2): 183-189.

DOI：10.1111/1747-0080.12130

• bioelectrical impedance
• deuterium dilution
• total body water

AimMulti-frequency bioelectrical impedance analysis (MF-BIA) may provide a quick, cost-efficient method of total body water (TBW) assessment. We compared TBW estimates from the Biospace InBody 520, 720, and S10 MF-BIA devices to TBW estimates from isotopic deuterium dilution (D2O).
MethodsTBW was measured in 25 men and 25 women, 18-49years, 73.6 15.4kg on each of the three devices and from D2O analysis.
ResultsAll MF-BIA devices significantly overestimated TBW compared to D2O TBW for men (4.7-5.4kg, 10.8-12.4%; P < 0.01) and women (3.7-4.3kg, 12.3-14.3%; P < 0.01). Regression analyses in men revealed R-2 (0.86-0.90) and SEE (1.7-2.0kg), and in women revealed R-2 (0.82-0.86) and SEE (1.5-1.6kg). Bland and Altman analyses revealed similar limits of agreement for men (3.5-3.9kg) and women (3.4-3.7kg).
ConclusionsThe Biospace InBody devices significantly overestimate TBW in men and women. The consistent bias for men and the increasing bias with increasing TBW for women may indicate that these devices are suitable for group TBW estimates in men only.

• 出版日期2015-6