Dual energy X-ray absorptiometry positioning protocols in assessing body composition: A systematic review of the literature
Dual energy X-ray absorptiometry positioning protocols in assessing body composition: A systematic review of the literature
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DOI：
10.1016/j.jsams.2018.03.005
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发表时间：
2018-10-01
影响因子：
4
通讯作者：
Schram, Ben
中科院分区：
文献类型：
--
作者：
Shiel, Flinn;Persson, Carl;Schram, Ben
目的：系统地识别和评估用于减少已发表研究中用于评估身体成分的双能x射线吸收仪（DXA）可靠性的技术和生物学错误的方法和方案。设计：系统回顾。方法：对5个数据库进行系统检索，确定DXA可靠性的研究。两名独立的审稿人使用一种改进的关键评估工具来评估他们的方法质量。数据提取和综合使用证据水平的方法。然后对用于减少DXA错误（技术和生物）从而提高DXA可靠性的方法进行了进一步分析。结果：12项研究符合入选标准。其中四篇文章被认为是高质量的。在为参与者准备DXA扫描时，质量文章考虑了生物和技术错误。经评估，娜娜定位方案具有强有力的证据。提供这一证据的研究表明，Nana定位方案的重测信度非常高（ICC 0.90-1.00或平均值变化小于1%）。由于缺乏高质量的研究，国家健康和营养检查调查（NHANES）定位方案被认为具有中等水平的证据。然而，现有的研究发现NHANES定位协议具有非常高的重测信度。证据有限，报告的可靠性在没有使用或报告具体定位方案的论文中有所不同。结论：由于强有力的证据证明了极好的重测可靠性，支持使用Nana定位方案，因此建议临床医生在使用DXA评估身体成分时将其作为首选。(C) 2018年澳大利亚运动医学。Elsevier Ltd.出版。版权所有。
Objectives: To systematically identify and assess methods and protocols used to reduce technical and biological errors in published studies that have investigated reliability of dual energy X-ray absorptiometry (DXA) for assessing body composition.Design: Systematic review.Methods: Systematic searches of five databases were used to identify studies of DXA reliability. Two independent reviewers used a modified critical appraisal tool to assess their methodological quality. Data was extracted and synthesised using a level of evidence approach. Further analysis was then undertaken of methods used to decrease DXA errors (technical and biological) and so enhance DXA reliability.Results: Twelve studies met eligibility criteria. Four of the articles were deemed high quality. Quality articles considered biological and technical errors when preparing participants for DXA scanning. The Nana positioning protocol was assessed to have a strong level of evidence. The studies providing this evidence indicated very high test-retest reliability (ICC 0.90-1.00 or less than 1% change in mean) of the Nana positioning protocol. The National Health and Nutrition Examination Survey (NHANES) positioning protocol was deemed to have a moderate level of evidence due to lack of high quality studies. However, the available studies found the NHANES positioning protocol had very high test-retest reliability. Evidence is limited and reported reliability has varied in papers where no specific positioning protocol was used or reported.Conclusions: Due to the strong level of evidence of excellent test-retest reliability that supports use of the Nana positioning protocol, it is recommended as the first choice for clinicians when using DXA to assess body composition. (C) 2018 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.