School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH43210, USA.
Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA.
Br J Nutr. 2024 Jun 28;131(12):2031-2038. doi: 10.1017/S000711452400076X. Epub 2024 Apr 15.
The purpose of this study was to compare single- and multi-frequency bioimpedance (BIA) devices against dual-energy X-ray absorptiometry (DXA) for appendicular lean mass (ALM) and muscle quality index (MQI) metrics in Hispanic adults. One hundred thirty-one Hispanic adults (18-55 years) participated in this study. ALM was measured with single-frequency bioimpedance analysis (SFBIA), multi-frequency bioimpedance analysis (MFBIA) and DXA. ALM (left arm + right arm + left leg + right leg) and ALM (left arm + right arm) were computed for all three devices. Handgrip strength (HGS) was measured using a dynamometer. The average HGS was used for all MQI models (highest left hand + highest right hand)/2. MQI was defined as the ratio between HGS and ALM. MQI was established as the ratio between HGS and ALM. SFBIA and MFBIA had strong correlations with DXA for all ALM and MQI metrics (Lin's concordance correlation coefficient values ranged from 0·86 (MQI) to 0·97 (Arms LM); all < 0·001). Equivalence testing varied between methods (e.g. SFBIA . DXA) when examining the different metrics (i.e. ALM, ALM, MQI and MQI). MQI was the only metric that did not differ from the line of identity and had no proportional bias when comparing all the devices against each other. The current study findings demonstrate good overall agreement between SFBIA, MFBIA and DXA for ALM and ALM in a Hispanic population. However, SFBIA and MFBIA have better agreement with DXA when used to compute MQI than MQI.
这项研究的目的是比较单频和多频生物阻抗（BIA）设备与双能 X 射线吸收法（DXA）在测量西班牙裔成年人四肢瘦体重（ALM）和肌肉质量指数（MQI）方面的差异。本研究纳入了 131 名西班牙裔成年人（18-55 岁）。使用单频生物阻抗分析法（SFBIA）、多频生物阻抗分析法（MFBIA）和 DXA 测量 ALM。所有三种设备均计算了左上肢+右上肢+左下肢+右下肢的 ALM（ALM）和左上肢+右上肢的 ALM（ALM）。使用测力计测量握力（HGS）。所有 MQI 模型均使用平均 HGS（左手最高值+右手最高值）/2。MQI 定义为 HGS 与 ALM 的比值。SFBIA 和 MFBIA 与 DXA 对所有 ALM 和 MQI 指标均具有很强的相关性（Lin 一致性相关系数值范围为 0.86（MQI）至 0.97（上肢 LM）；所有 P 值均<0.001）。当检查不同的指标（即 ALM、ALM、MQI 和 MQI）时，不同方法（如 SFBIA 和 DXA）之间的等效性测试结果存在差异。当将所有设备相互比较时，MQI 是唯一与参考线无差异且无比例偏差的指标。本研究结果表明，SFBIA、MFBIA 和 DXA 在西班牙裔人群中测量 ALM 和 ALM 具有良好的总体一致性。然而，当用于计算 MQI 时，SFBIA 和 MFBIA 与 DXA 的一致性优于 MQI。
