Horswill C A, Geeseman R, Boileau R A, Williams B T, Layman D K, Massey B H
University of Illinois-UC.
Am J Clin Nutr. 1989 Apr;49(4):593-8. doi: 10.1093/ajcn/49.4.593.
A comparison of methods for estimating body composition (BC) of 12 subjects was made by using fat-free weight from total-body electrical conductivity (FFWT), muscle mass from 3-methylhistidine excretion (MM3MH) and creatinine excretion (MMCRE), fat-free weight from hydrostatic weighing (FFWBD), and lean body mass from whole-body potassium counting (LBMK). Data were analyzed for day-to-day variability and regression analyses were applied to compare the different methods of measuring BC. Mean values (+/- SEM, kg) for the estimates were 53.9 +/- 3.5 (FFWT), 26.9 +/- 2.9 (MM3MH), 25.3 +/- 2.5 (MMCRE), 53.2 +/- 3.6 (FFWBD), and 52.8 +/- 3.5 (LBMK). Regression analyses revealed that TOBEC estimates of fat-free weight had an adjusted r2 (+/- SEE, kg) of 0.95 +/- 2.2, 0.50 +/- 7.9, 0.95 +/- 1.8, and 0.88 +/- 4.0 for MM3MH, MMCRE, FFWBD, and LBMK, respectively. It was concluded that TOBEC is a potentially reliable method for estimating the muscle mass within the fat-free compartment, as well as fat-free weight and lean body mass.
通过使用全身电阻抗法测得的去脂体重（FFWT）、3-甲基组氨酸排泄量测得的肌肉量（MM3MH）、肌酐排泄量测得的肌肉量（MMCRE）、水下称重法测得的去脂体重（FFWBD）以及全身钾计数法测得的瘦体重（LBMK），对12名受试者的身体成分（BC）估计方法进行了比较。分析了数据的每日变异性，并应用回归分析来比较测量BC的不同方法。各估计值的平均值（±标准误，kg）分别为53.9±3.5（FFWT）、26.9±2.9（MM3MH）、25.3±2.5（MMCRE）、53.2±3.6（FFWBD）和52.8±3.5（LBMK）。回归分析显示，对于MM3MH、MMCRE、FFWBD和LBMK，全身电阻抗法（TOBEC）对去脂体重的估计值的调整决定系数（±标准误估计，kg）分别为0.95±2.2、0.50±7.9、0.95±1.8和0.88±4.0。得出的结论是，全身电阻抗法是一种潜在可靠的方法，可用于估计去脂部分内的肌肉量以及去脂体重和瘦体重。
