New electrode system for rapid whole-body and segmental bioimpedance assessment.
New electrode system for rapid whole-body and segmental bioimpedance assessment.
复制标题
用于快速全身和节段生物阻抗评估的新型电极系统。
DOI：
10.1097/00005768-199709000-00022
复制
发表时间：
1997
影响因子：
4.1
通讯作者：
Heymsfield,SB
中科院分区：
文献类型：
--
作者：
Tan,YX;Nuñez,C;Sun,Y;Zhang,K;Wang,Z;Heymsfield,SB
骨骼肌是临床上重要的身体成分，目前很难在体内定量。以前的研究表明，在50 kHz处测量的附件阻力可以用来预测四肢骨骼肌质量，尽管技术人员需要准确地放置多个凝胶电极。在目前的研究中，我们开发了一种新的生物阻抗分析(BIA)电极架，设计用于快速测量全身和节段的电阻和电抗。新系统采用不锈钢手脚接触电极代替凝胶电极，并采用以前报道的导线放置算法来计算肢体电阻，而不需要放置传统的近端肢体凝胶电极。这份报告描述了新电极系统的设计，并研究了接触电阻和凝胶电极测量的电阻之间的关系，以及用最近报道的导线放置算法测量的附件电阻与传统放置的分段电极之间的关系。结果在健康成人中，接触电极和凝胶电极(例如，手对手，N=12，r=0.994，P<；0.001)以及最近报道的方法测量的节段阻力与传统测量的节段阻力(例如，右臂，N=13；r=0.997，P<；0.001)之间显示出高度的相关性。这些结果有力地支持了新电极系统的电阻测量的有效性，并表明了开发一种快速测量肢体骨骼肌质量的BIA系统的可行性。
Skeletal muscle is a clinically important body composition component which at present is difficult to quantify in vivo. Previous studies suggest that measured appendicular resistance at 50 kHz can be used to predict extremity skeletal muscle mass, although accurate technician placement of multiple gel electrodes is required. In the present study we developed a new bioimpedance analysis (BIA) electrode stand designed for rapid whole-body and segmental resistance and reactance measurements. The new system incorporates stainless steel hand and foot contact electrodes in place of gel electrodes and employs a previously reported lead placement algorithm for deriving extremity resistances without the need for placing conventional proximal limb gel electrodes. This report describes the new electrode system's design and examines the relationships between contact and gel electrode-measured resistance and between appendicular resistance measured with the recently reported lead placement algorithm and conventionally placed segmental electrodes. Results in healthy adults demonstrate high correlations between contact and gel electrodes (eg, hand-to-hand, N= 12, r= 0.994, P< 0.001) and between segmental resistance measured by the recently reported approach and conventionally-measured segmental resistance (eg, right arm, N= 13; r= 0.997, P< 0.001). These results strongly support the validity of the new electrode system's resistance measurements and suggests the feasibility of developing a BIA system for rapidly measuring extremity skeletal muscle mass.