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Does a Novice Technician Produce Results Similar to That of an Experienced DXA Technician When Assessing Body Composition and Bone Mineral Density?
International Journal of Sport Nutrition and Exercise Metabolism ( IF 2.5 ) Pub Date : 2019-07-01 , DOI: 10.1123/ijsnem.2018-0299
Carl Persson 1 , Flinn Shiel 1 , Mike Climstein 1, 2, 3 , James Furness 1
Affiliation  

Dual-energy X-ray absorptiometry is a commonly used clinical assessment tool for body composition and bone mineral density, which is gaining popularity in athletic cohorts. Results from body composition scans are useful for athletic populations to track training and nutritional interventions, while bone mineral density scans are valuable for athletes at risk of developing stress fractures due to low bone mineral density. However, no research has ascertained if a novice technician (accredited but not experienced) could produce similar results to an experienced technician. Two groups of recreational athletes were scanned, one by an experienced technician, one by a novice technician. All participants were scanned twice with repositioning between scans. The experienced technician's reliability (intraclass correlation coefficient = .989-.998; percentage change in mean = -0.01 to 0.10), precision (typical error as coefficient of variation percentage = 0.01-0.47; SEM% = 0.61-1.39), and sensitivity to change (smallest real difference percentage = 1.70-3.85) were similar; however, superior to those of the novice technician. The novice technician results were reliability (intraclass correlation coefficient = .985-.997; percentage change in mean = -0.03 to 0.23), precision (typical error as coefficient of variation percentage = 0.03-0.75; SEM% = 1.06-2.12), and sensitivity to change (smallest real difference percentage = 2.73-5.86). Extensive experience, while valuable, is not a necessary requirement to produce quality results when undertaking whole-body dual-energy X-ray absorptiometry scanning.

中文翻译:

评估身体成分和骨矿物质密度时,新手技术人员会产生与经验丰富的DXA技术人员相似的结果吗?

双能X线骨密度仪是人体成分和骨矿物质密度的常用临床评估工具,在运动人群中越来越受欢迎。身体成分扫描的结果对运动人群跟踪训练和营养干预非常有用,而骨矿物质密度扫描对于因骨矿物质密度低而面临发生应力性骨折风险的运动员而言非常有价值。但是,尚未确定新手技术人员(经认证但没有经验)是否可以产生与有经验的技术人员类似的结果。对两组休闲运动员进行了扫描,一组由经验丰富的技术人员进行,一组由新手技术人员进行。对所有参与者进行两次扫描,两次扫描之间重新定位。经验丰富的技术人员的可靠性(类内相关系数= .989-.998;均值变化百分比= -0.01至0.10),精度(典型误差(变异系数百分比)= 0.01-0.47; SEM%= 0.61-1.39)和变化敏感性(最小实际差异百分比= 1.70-3.85)相似;但是,优于新手技术人员。新手技术人员的结果是可靠性(类内相关系数= .985-.997;平均值变化百分比= -0.03至0.23),精度(典型误差,即变异系数百分比= 0.03-0.75; SEM%= 1.06-2.12),和变化敏感度(最小实际差异百分比= 2.73-5.86)。进行全身双能X线骨密度仪扫描时,丰富的经验虽然有价值,但并不是产生高质量结果的必要条件。精度(典型误差为变异系数百分比= 0.01-0.47; SEM%= 0.61-1.39)和变化敏感性(最小实际差异百分比= 1.70-3.85)相似;但是,优于新手技术人员。新手技术人员的结果是可靠性(类内相关系数= .985-.997;平均值变化百分比= -0.03至0.23),精度(典型误差,即变异系数百分比= 0.03-0.75; SEM%= 1.06-2.12),和变化敏感度(最小实际差异百分比= 2.73-5.86)。进行全身双能X线骨密度仪扫描时,丰富的经验虽然有价值,但并不是产生高质量结果的必要条件。精度(典型误差为变异系数百分比= 0.01-0.47; SEM%= 0.61-1.39)和变化敏感性(最小实际差异百分比= 1.70-3.85)相似;但是,优于新手技术人员。新手技术人员的结果是可靠性(类内相关系数= .985-.997;平均值变化百分比= -0.03至0.23),精度(典型误差,即变异系数百分比= 0.03-0.75; SEM%= 1.06-2.12),和变化敏感度(最小实际差异百分比= 2.73-5.86)。进行全身双能X线骨密度仪扫描时,丰富的经验虽然有价值,但并不是产生高质量结果的必要条件。优于新手技术人员。新手技术人员的结果包括可靠性(类内相关系数= .985-.997;平均值变化百分比= -0.03至0.23),精度(典型误差,即变异系数百分比= 0.03-0.75; SEM%= 1.06-2.12),和变化敏感度(最小实际差异百分比= 2.73-5.86)。进行全身双能X线骨密度仪扫描时,丰富的经验虽然有价值,但并不是产生高质量结果的必要条件。优于新手技术人员。新手技术人员的结果是可靠性(类内相关系数= .985-.997;平均值变化百分比= -0.03至0.23),精度(典型误差,即变异系数百分比= 0.03-0.75; SEM%= 1.06-2.12),和变化敏感度(最小实际差异百分比= 2.73-5.86)。进行全身双能X线骨密度仪扫描时,丰富的经验虽然有价值,但并不是产生高质量结果的必要条件。和变化敏感度(最小实际差异百分比= 2.73-5.86)。进行全身双能X线骨密度仪扫描时,丰富的经验虽然有价值,但并不是产生高质量结果的必要条件。和变化敏感度(最小实际差异百分比= 2.73-5.86)。进行全身双能X线骨密度仪扫描时,丰富的经验虽然有价值,但并不是产生高质量结果的必要条件。
更新日期:2019-11-01
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