Characteristics of body water distribution in healthy adults measured by multi-frequency bioelectrical impedance analysis

Q4 Engineering Journal of Biorheology Pub Date : 2019-01-01 DOI:10.17106/JBR.33.13
M. Ando, N. Shimada, Kenichiro Asano, T. Kikutsuji, Jun-ichi Ono, K. Jikuya, S. Mochizuki
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引用次数: 1

Abstract

Objective: To investigate the characteristics of the ratio of extracellular water (ECW) to total body water (TBW) volume (ECW/TBW) in a large group of healthy adults, measured by multi-frequency bioelectrical impedance (bioimpedance) analysis (MF-BIA). Subjects and methods: The correlation between ECW and TBW was studied in 957 healthy adults who underwent general medical examinations. Differences between measured and predicted ECW from ECW–TBW correlation equations (ΔECW) were calculated, and possible factors for non-zero ΔECW were explored. To investigate the influence of percent fat mass (%FM) on ECW/TBW, the ECW/TBW values of “lean” and “obese” groups, classified by %FM, were compared. ECW/TBW was also compared between “non-obese” and “obese class I-II” groups, classified by the body mass index for both genders. Results: ECW and TBW showed strong positive correlations in both genders. ΔECW was within ±0.2 L and increased with advancing age; ECW/ TBW also increased. There were no significant differences in ECW/TBW between the “lean” and “obese” groups in either gender, or between the “non-obese” and “obese class I-II” groups in the female group. Conclusions: ECW/TBW measured by MF-BIA was considered to be an index of body water distribution in healthy adults ranging from “lean” to “obese class I-II,” which is not significantly affected by body fat.
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多频生物电阻抗分析测定健康成人体内水分分布特征
目的:通过多频生物阻抗(bioimpedance)分析(bf - bia),探讨健康成人大群体细胞外水(ECW)与全身水(TBW)体积之比(ECW/TBW)的变化特点。研究对象与方法:对957例健康成人进行常规体检,研究了脑外宽与脑外宽的相关性。根据ECW - tbw相关方程(ΔECW)计算实测ECW与预测ECW之间的差异,并探讨非零的可能因素ΔECW。为了研究脂肪质量百分比(%FM)对ECW/TBW的影响,比较以%FM分类的“瘦”组和“胖”组的ECW/TBW值。比较“非肥胖”组和“肥胖I-II级”组之间的ECW/TBW,按男女体重指数进行分类。结果:ECW与TBW在两性中呈显著正相关。ΔECW在±0.2 L以内,随年龄增长而增加;ECW/ TBW也有所增加。男女“瘦”组和“胖”组之间、女性“非肥胖”组和“肥胖I-II级”组之间的ECW/TBW均无显著差异。结论:通过MF-BIA测量的ECW/TBW可以被认为是健康成人从“瘦”到“肥胖I-II级”的身体水分分布指标,该指标不受体脂的显著影响。
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来源期刊
Journal of Biorheology
Journal of Biorheology Engineering-Mechanical Engineering
CiteScore
0.50
自引率
0.00%
发文量
5
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