多频生物电阻抗设备评估女性身体成分估计值的有效性
Validity of Body Composition Estimates in Women Assessed by a Multifrequency Bioelectrical Impedance Device.
作者信息
Zaplatosch Mitchell E, Meireles Juliana F, Amason Janeen S, Dabeer Sadaf, Kliszczewicz Brian M, Mangine Gerald T, Barry Valene G, Gower Barbara A, Ingram Katherine H
机构信息
Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, GA 30144, USA.
Department of Family and Community Medicine, School of Community Medicine, University of Oklahoma Health Sciences Center, Tulsa, OK 74135, USA.
出版信息
Sensors (Basel). 2025 Aug 14;25(16):5037. doi: 10.3390/s25165037.
BACKGROUND
Multifrequency bioelectrical impedance devices such as the InBody 770 (IB770) offer faster measurements and lower costs compared with other body composition assessments. This study validated measures from IB770 against the deuterium oxide dilution technique (D2O) and DXA and compared a four-compartment (4C) model using total body water (TBW) derived from IB770 compared with D2O.
METHODS
A total of 55 adult females (mean ± SD, age: 21.1 ± 2.6 years) completed IB770 and DXA scans and the D2O protocol. Lin's concordance correlation coefficients (CCCs), Bland-Altman analyses, and other equivalence tests evaluated agreement between IB770 and the criterion for measures of fat mass (FM), fat-free mass (FFM), and TBW individually and as part of 4C models.
RESULTS
There was substantial agreement between IB770 and D2O for TBW (MD = Mean Difference) (MD = 0.34 L, CCC = 0.98) and between the IB770 and DXA for FM (MD = -0.22 kg, CCC = 0.99). IB770 overestimated FFM compared with DXA (MD = 3.15 kg, CCC = 0.91). Both 4C models had almost perfect agreement for FM (CCC = 0.99), FFM (CCC = 0.99), and body fat percentage (CCC = 0.99).
CONCLUSIONS
IB770 is valid for assessing TBW and can be used within the context of a 4C model in females.
背景
与其他身体成分评估方法相比，多频率生物电阻抗设备（如InBody 770，简称IB770）测量速度更快且成本更低。本研究验证了IB770测量结果与氧化氘稀释技术（D2O）和双能X线吸收法（DXA）的一致性，并比较了基于IB770得出的总体水（TBW）的四成分（4C）模型与D2O模型。
方法
共有55名成年女性（平均±标准差，年龄：21.1±2.6岁）完成了IB770和DXA扫描以及D2O检测流程。采用林氏一致性相关系数（CCC）、布兰德-奥特曼分析以及其他等效性检验，分别评估了IB770与脂肪量（FM）、去脂体重（FFM）和TBW测量标准之间的一致性，以及作为4C模型一部分时的一致性。
结果
IB770与D2O在TBW测量上具有高度一致性（平均差异[MD]=0.34升，CCC=0.98），IB770与DXA在FM测量上具有高度一致性（MD=-0.22千克，CCC=0.99）。与DXA相比，IB770高估了FFM（MD=3.15千克，CCC=0.91）。两种4C模型在FM（CCC=0.99）、FFM（CCC=0.99）和体脂百分比（CCC=0.99）方面几乎完全一致。
结论
IB770可有效评估女性的TBW，并可用于女性的4C模型。
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