Evaluation of a rotary laser body scanner for body volume and fat assessment.
Evaluation of a rotary laser body scanner for body volume and fat assessment.
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DOI：
10.1520/jte102871
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发表时间：
2010-07-08
影响因子：
1.2
通讯作者：
Xu B
中科院分区：
文献类型：
--
作者：
Pepper MR;Freeland-Graves JH;Yu W;Stanforth PR;Xu B
本文报道了三维(3D)激光人体扫描仪估计人体体积和脂肪百分比的可靠性和有效性的评价试验。重复测量身体成像以进行重复性分析。该仪器的有效性是通过比较成像测量的身体体积和水密度测量来评估的，并将体脂测量与水密度测量和双能X射线吸收测量进行比较。重复性分析表明，受试者内部测量的体积差异不大(ICC≥0.99，p<；0.01)。用激光人体扫描仪和水密度法估算的人体体积有很强的相关性(r=0.99，p<；0.01)，且一致性很高(ICC=0.99，p<；0.01)。体脂百分比的测量方法之间也有很强的一致性(ICC=0.86，p<；0.01)，通过身体成像估计的平均体脂百分比与标准方法没有不同(p>；0.05)。这些结果表明，3D激光人体扫描仪是一种可靠和有效的估计人体体积的技术。此外，与双能X射线吸收测量法相比，身体成像是一种准确的身体脂肪测量方法。这种新仪器是一种快速、简单、廉价的身体成分分析方法，前景看好。
This paper reports the evaluation tests on the reliability and validity of a 3-dimensional (3D) laser body scanner for estimation of body volume and % fat. Repeated measures of body imaging were performed for reproducibility analysis. Validity of the instrument was assessed by comparison of measures of body volume by imaging to hydrodensitometry, and body fat was compared to hydrodensitometry and dual energy X-ray absorptiometry. Reproducibility analysis showed little difference between within-subjects measurements of volume (ICC ≥ 0.99, p < 0.01). Body volume estimations by laser body scanner and hydrodensitometry were strongly related (r = 0.99, p < 0.01), and agreement was high (ICC = 0.99, p < 0.01). Measurements of % body fat also agreed strongly with each other between methods (ICC = 0.86, p < 0.01), and mean % fat estimates by body imaging did not differ from criterion methods (p > 0.05). These findings indicate that the 3D laser body scanner is a reliable and valid technique for the estimation of body volume. Furthermore, body imaging is an accurate measure of body fat, as compared to dual energy X-ray absorptiometry. This new instrument is promising as a quick, simple to use, and inexpensive method of body composition analysis.