External cross-validation of bioelectrical impedance analysis for the assessment of body composition in Korean adults

被引:29
作者
Kim, Hyeoijin [2 ]
Kim, Chul-Hyun [1 ]
Kim, Dong-Won [3 ]
Park, Mira [4 ]
Park, Hye Soon [5 ]
Min, Sun-Seek [1 ]
Han, Seung-Ho [1 ]
Yee, Jae-Yong [1 ]
Chung, Sochung [6 ]
Kim, Chan [1 ]
机构
[1] Eulji Univ, Dept Physiol & Biophys, Antiaging Res Ctr, Sch Med, Taejon 301832, South Korea
[2] Soonchunhyang Univ, Chungman 336745, South Korea
[3] Hanyang Univ, Dept Anesthesiol & Pain Med, Coll Med, Seoul 133792, South Korea
[4] Eulji Univ, Dept Prevent Med, Sch Med, Taejon 301832, South Korea
[5] Asan Med Ctr, Dept Family Med, Seoul 138736, South Korea
[6] Konkuk Univ, Dept Pediat, Med Ctr, Sch Med, Seoul 143729, South Korea
关键词
Body composition; bioelectrical impedance analysis; cross-validation; Dual Energy X-ray Absorptiometry; FAT-FREE MASS; PREDICTION EQUATIONS; OBESITY; WOMEN; INDEX; STRATEGIES; ETHNICITY; EPIDEMIC; DILUTION;
D O I
10.4162/nrp.2011.5.3.246
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 ;
摘要
Bioelectrical impedance analysis (BIA) models must be validated against a reference method in a representative population sample before they can be accepted as accurate and applicable. The purpose of this study was to compare the eight-electrode BIA method with DEXA as a reference method in the assessment of body composition in Korean adults and to investigate the predictive accuracy and applicability of the eight-electrode BIA model. A total of 174 apparently healthy adults participated. The study was designed as a cross-sectional study. FM, %fat, and FFM were estimated by an eight-electrode BIA model and were measured by DEXA. Correlations between BIA_%fat and DEXA_%fat were 0.956 for men and 0.960 for women with a total error of 2.1%fat in men and 2.3%fat in women. The mean difference between BIA_%fat and DEXA_%fat was small but significant (P<0.05), which resulted in an overestimation of 1.2 +/- 2.2%fat (95% CI: -3.2-6.2%fat) in men and an underestimation of -2.0 +/- 2.4%fat (95% CI: -2.3-7.1%fat) in women. In the Bland-Altman analysis, the %fat of 86.3% of men was accurately estimated and the %fat of 66.0% of women was accurately estimated to within 3.5%fat. The BR had good agreement for prediction of %fat in Korean adults. However, the eight-electrode BIA had small, but systemic, errors of %fat in the predictive accuracy for individual estimation. The total errors led to an overestimation of %fat in lean men and an underestimation of %fat in obese women.
引用
收藏
页码:246 / 252
页数:7
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