一种便携式生物电阻抗秤评估白种人和非裔美国儿童及青少年体脂百分比的效度分析
Validity assessment of a portable bioimpedance scale to estimate body fat percentage in white and African-American children and adolescents.
作者信息
Barreira T V, Staiano A E, Katzmarzyk P T
机构信息
Pennington Biomedical Research Center, Baton Rouge, Louisiana 70808-4124, USA.
出版信息
Pediatr Obes. 2013 Apr;8(2):e29-32. doi: 10.1111/j.2047-6310.2012.00122.x. Epub 2012 Dec 13.
Abstract
OBJECTIVE
The objective of the study was to determine accuracy of the Tanita SC-240 body composition analyser to measure paediatric percent body fat (%BF).
METHODS
Eighty-nine African-American and white 5-18-year-olds participated in this study. %BF was estimated by dual-energy X-ray absorptiometry (DXA) and by the Tanita SC-240.
RESULTS
Overall %BF was 33.5 ± 10.5% (Tanita SC-240) vs. 34.5 ± 8.7% (DXA). There was no significant difference between the two measures (P = 0.52, average error = -1.0%, average absolute error = 3.9%). The Tanita mean %BF estimates significantly differed from the DXA mean %BF in white boys (P = 0.001, Cohen's d = 0.40) and white girls (P = 0.006, Cohen's d = 0.48), but differences were of small effect. No differences in %BF estimates were found for African-American boys or girls.
CONCLUSIONS
In this sample, the Tanita SC-240 demonstrated acceptable accuracy for estimating %BF when compared with DXA, supporting its use in field studies.
摘要
目的
本研究的目的是确定Tanita SC - 240人体成分分析仪测量儿童体脂百分比（%BF）的准确性。
方法
89名5至18岁的非裔美国人和白人儿童参与了本研究。通过双能X线吸收法（DXA）和Tanita SC - 240来估计%BF。
结果
总体而言，Tanita SC - 240测量的%BF为33.5±10.5%，而DXA测量的为34.5±8.7%。两种测量方法之间无显著差异（P = 0.52，平均误差 = -1.0%，平均绝对误差 = 3.9%）。在白人男孩（P = 0.001，科恩d值 = 0.40）和白人女孩（P = 0.006，科恩d值 = 0.48）中，Tanita平均%BF估计值与DXA平均%BF存在显著差异，但效应较小。非裔美国男孩或女孩的%BF估计值没有差异。
结论
在本样本中，与DXA相比，Tanita SC - 240在估计%BF方面显示出可接受的准确性，支持其在现场研究中的应用。
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