Skeletal muscle mass in hospitalized elderly patients: Comparison of measurements by single-frequency BIA and DXA

被引:73
作者
Bosaeus, Ingvar [1 ]
Wilcox, Gisela [2 ]
Rothenberg, Elisabet [1 ]
Strauss, Boyd J. [2 ]
机构
[1] Sahlgrens Univ Hosp, Clin Nutr Unit, S-41345 Gothenburg, Sweden
[2] Monash Univ, Dept Med, Southern Clin Sch, Clayton, Vic, Australia
关键词
Body composition; Sarcopenia; Bioimpedance analysis; Method comparison; Elderly; BIOELECTRICAL-IMPEDANCE ANALYSIS; BODY-COMPOSITION; REFERENCE VALUES; SPECTROSCOPY; SARCOPENIA; ACCURACY; EQUATION;
D O I
10.1016/j.clnu.2013.06.007
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 [营养与食品卫生学];
摘要
Background & aims: There is increasing interest in estimating skeletal muscle mass (SMM) in clinical practice. We aimed to validate a bioelectrical impedance analysis (BIA) prediction equation for SMM, developed in a different healthy elderly population, in a population of hospital patients aged 70 and over, by comparison with dual-energy X-ray absorptiometry (DXA) SMM estimates. Comparison was also made with two other previously published BIA muscle prediction equations. Methods: Muscle measurements by BIA and DXA were compared in 117 patients with a range of clinical conditions (45 female, 72 male, mean age 75 years). Results: The BIA equation used yielded an accurate estimate of DXA-derived SMM. Mean (SD) difference was 0.26(1.79) kg (ns). The two other BIA equations over-estimated SMM compared to DXA (both p < 0.001), but all equations were highly correlated. Conclusions: The BIA equation used, developed in a different healthy elderly population, gave an accurate estimate of DXA-derived SMM in a population with various clinical disorders. BIA appears potentially capable to estimate SMM in clinical disorders, but the optimal approach to its use for this purpose requires further investigation. (C) 2013 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism. All rights reserved.
引用
收藏
页码:426 / 431
页数:6
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