Webber J, Donaldson M, Allison S P, Macdonald I A
Department of Physiology and Pharmacology, Medical School, Queen's Medical Centre, Nottingham NG7 2UH, UK.
Clin Nutr. 1994 Jun;13(3):177-82. doi: 10.1016/0261-5614(94)90098-1.
The assessment of body composition in obese subjects by anthropometric means (skinfolds), presents many difficulties. This study compares the estimates provided of fat free mass in 21 obese subjects (mean body mass index 36.6 +/- 1.2 kg/m(2)) using body mass index and skinfold thickness, with those obtained using the more recently developed techniques of bioelectrical impedance analysis and dual-energy X-ray absorptiometry. Despite highly significant correlations between some of the methods (r(2) = 0.94 for dual-energy X-ray absorptiometry versus bioelectrical impedance analysis), there was a considerable lack of agreement in the measurements, particularly when skinfold thickness was compared with dual-energy X-ray absorptiometry (limits of agreement -21.9 to -1.5 kg for fat free mass estimated from dual-energy X-ray absorptiometry and skinfold thickness) and even for dual-energy X-ray absorptiometry and bioelectrical impedance analysis (limits of agreement -10.7 to 0.4 kg). After weight loss the intermethod differences were reduced.
通过人体测量方法（皮褶厚度）评估肥胖受试者的身体成分存在许多困难。本研究比较了21名肥胖受试者（平均体重指数36.6 +/- 1.2 kg/m²）使用体重指数和皮褶厚度估算的去脂体重，与使用最近开发的生物电阻抗分析和双能X线吸收法技术获得的结果。尽管某些方法之间存在高度显著的相关性（双能X线吸收法与生物电阻抗分析的r² = 0.94），但测量结果仍存在相当大的差异，尤其是将皮褶厚度与双能X线吸收法进行比较时（双能X线吸收法和皮褶厚度估算的去脂体重的一致性界限为-21.9至-1.5 kg），甚至双能X线吸收法和生物电阻抗分析之间也是如此（一致性界限为-10.7至0.4 kg）。体重减轻后，方法间差异减小。
