八极生物电阻抗分析评估 HIV 患儿和青少年总体及四肢体成分的准确性：与双能 X 射线吸收法和空气置换体描记法的比较。
Accuracy of octa-polar bioelectrical impedance analysis for the assessment of total and appendicular body composition in children and adolescents with HIV: comparison with dual energy X-ray absorptiometry and air displacement plethysmography.
机构信息
Universidade Federal de Santa Catarina, Centro de Desportos, Núcleo de Pesquisa em Cineantropometria e Desempenho Humano, Florianópolis, Santa Catarina, Brazil.
出版信息
J Hum Nutr Diet. 2018 Apr;31(2):276-285. doi: 10.1111/jhn.12501. Epub 2017 Aug 10.
BACKGROUND
Body composition analysis has been used to investigate fat mass (FM) and bone mineral content (BMC) in children and adolescents diagnosed with HIV. Investigating the validity of bioelectrical impedance analysis (BIA) is interesting with respect to testing useful techniques for monitoring body composition in children and adolescents in clinical practice. The present study aimed to determine the validity of body composition analysis by BIA compared to dual-energy X-ray absorptiometry (DXA) and air displacement plethysmography (ADP) in children and adolescents an HIV diagnosis.
METHODS
Sixty-four children and adolescents (35 females and 29 males) with a mean (SD) age of 12.22 (2.13) years and with an HIV diagnosis participated in the study. Fat-free mass (FFM), FM and body fat percentage (%BF) were obtained by BIA for comparison with DXA and ADP. Segmented FM (trunk, legs and arms), lean soft tissue mass (LSTM) (total and segmented) and BMC were obtained by BIA for comparison with DXA.
RESULTS
BIA presented a clinically acceptable correlation with DXA and ADP for FFM. Values found by BIA were underestimated compared to ADP, and overestimated compared to DXA. BIA presented a clinically acceptable correlation with DXA for LSTM estimates (total and segmented parameters) in both sexes (underestimating FM and overestimating LSTM). For other components (%BF, FM and BMC), BIA had a clinically unacceptable correlation with the reference methods in both sexes.
CONCLUSIONS
BIA was suitable for evaluating FFM and LSTM in children and adolescents with an HIV diagnosis. For FM, %BF and BMC, BIA was not suitable for performing an evaluation in both sexes.
背景
人体成分分析已被用于研究诊断为 HIV 的儿童和青少年的脂肪量 (FM) 和骨矿物质含量 (BMC)。研究生物电阻抗分析 (BIA) 的有效性对于测试在临床实践中监测儿童和青少年身体成分的有用技术很有趣。本研究旨在确定 BIA 与双能 X 射线吸收法 (DXA) 和空气置换体描记法 (ADP) 相比，在诊断为 HIV 的儿童和青少年中分析身体成分的有效性。
方法
64 名儿童和青少年（35 名女性和 29 名男性）参与了这项研究，平均年龄（SD）为 12.22（2.13）岁，均被诊断为 HIV。通过 BIA 获得去脂体重 (FFM)、FM 和体脂百分比 (%BF)，并与 DXA 和 ADP 进行比较。通过 BIA 获得分段 FM（躯干、腿部和手臂）、瘦体组织质量 (LSTM)（总体重和分段）和 BMC，并与 DXA 进行比较。
结果
BIA 与 DXA 和 ADP 对 FFM 的相关性具有临床可接受性。与 ADP 相比，BIA 得到的值被低估，与 DXA 相比，BIA 得到的值被高估。BIA 与 DXA 对男女两性的 LSTM 估计值（总体重和分段参数）具有临床可接受的相关性（低估 FM，高估 LSTM）。对于其他成分 (%BF、FM 和 BMC)，BIA 与两种性别参考方法的相关性在临床不可接受。
结论
BIA 适用于评估诊断为 HIV 的儿童和青少年的 FFM 和 LSTM。对于 FM、%BF 和 BMC，BIA 不适用于两种性别进行评估。
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