Orphanidou C, McCargar L, Birmingham C L, Mathieson J, Goldner E
School of Family and Nutritional Sciences, University of British Columbia, Vancouver, Canada.
J Am Diet Assoc. 1994 Aug;94(8):855-8. doi: 10.1016/0002-8223(94)92363-9.
The purpose of this study was to compare skinfold caliper and ultrasound measurement of subcutaneous body fat at three abdominal sites with computed tomography, which is considered to be the gold standard.
This was a cross-sectional study in which computed-tomography, ultrasound, and skinfold caliper measurements were made at three distinct abdominal sites. All body composition and anthropometric measurements were performed on each subject on one occasion.
Twenty-two subjects were recruited (13 men and 9 women). Mean ages (+/- standard deviation) were 43 +/- 4 years for the women and 51 +/- 18 years for the men. All subjects had been previously scheduled for an abdominal or pelvic computed-tomography scan at the Department of Radiology, St Paul's Hospital, Vancouver, British Columbia, Canada, and participated in the study on a volunteer basis.
A better agreement was found between the skinfold calipers and computed-tomography methods than between the ultrasound and computed-tomography method for the measurement of subcutaneous body fat. This was observed when the data were analyzed for both correlational agreement and for graphical interpretation.
The relationships among skinfold, ultrasound, and computed-tomography measurements were analyzed by determining Pearson correlation coefficients. A graphical method described by Bland and Altman was also used to assess agreement among the three methods.
Significant correlation coefficients were observed between skinfold calipers and computed tomography at all three abdominal sites (site 1, r = .60, P = .003; site 2, r = .70, P = .0001; site 3, r = .73, P = .0001). Ultrasound and computed-tomography methods only showed a significant correlation at site 3 (r = .54; P = .009). The graphical method revealed that the variation in the ultrasound measurements was much greater than that of the skinfold measurements when compared to computed-tomography values.
APPLICATIONS/CONCLUSIONS: The results of this study indicated that relative agreement in the measurement of subcutaneous body fat between skinfold and computed-tomography measurements was superior to that exhibited between ultrasound and computed-tomography measurements. This finding enhances the potential use of skinfold calipers in the clinical setting, particularly in view of the fact that measurement of subcutaneous body fat at different body sites is becoming increasingly important for the characterization of risk of certain disease states.
本研究旨在比较皮褶厚度计和超声测量腹部三个部位皮下体脂的结果与计算机断层扫描（被视为金标准）的结果。
这是一项横断面研究，在腹部三个不同部位进行计算机断层扫描、超声和皮褶厚度计测量。所有身体成分和人体测量指标均在每位受试者身上一次性完成。
招募了22名受试者（13名男性和9名女性）。女性的平均年龄（±标准差）为43±4岁，男性为51±18岁。所有受试者此前均已预约在加拿大不列颠哥伦比亚省温哥华圣保罗医院放射科进行腹部或盆腔计算机断层扫描，并自愿参与本研究。
在测量皮下体脂方面，发现皮褶厚度计与计算机断层扫描方法之间的一致性优于超声与计算机断层扫描方法之间的一致性。在分析相关一致性和进行图形解释时均观察到这一点。
通过确定皮尔逊相关系数来分析皮褶、超声和计算机断层扫描测量结果之间的关系。还使用了布兰德和奥特曼描述的图形方法来评估这三种方法之间的一致性。
在所有三个腹部部位，皮褶厚度计与计算机断层扫描之间均观察到显著的相关系数（部位1，r = 0.60，P = 0.003；部位2，r = 0.70，P = 0.0001；部位3，r = 0.73，P = 0.0001）。超声与计算机断层扫描方法仅在部位3显示出显著相关性（r = 0.54；P = 0.009）。图形方法显示，与计算机断层扫描值相比，超声测量的变化远大于皮褶测量的变化。
应用/结论：本研究结果表明，皮褶测量与计算机断层扫描测量皮下体脂的相对一致性优于超声与计算机断层扫描测量之间的一致性。这一发现增强了皮褶厚度计在临床环境中的潜在应用，特别是考虑到在不同身体部位测量皮下体脂对于某些疾病状态风险特征的描述变得越来越重要。
