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首页> 外文期刊>Romanian Journal of Biophysics >EVALUATION OF THE TESTER’S INFLUENCE ON THE RESULTS OF AIR DISPLACEMENT PLETHYSMOGRAPHY
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EVALUATION OF THE TESTER’S INFLUENCE ON THE RESULTS OF AIR DISPLACEMENT PLETHYSMOGRAPHY

机译：评估测试员对空气置换方法的影响

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摘要

The tester was reported as a potential source of variability in air displacement plethysmography (ADP). This work evaluates the impact of the tester on body fat percentage (% BF ) assessments via ADP using the BOD POD system. We analyzed sets of consecutive ADP trials conducted on the same subject. A pair of randomly assigned testers performed 5 sets of 12 trials. Sets differed in subject preparation (eating, drinking, and bathroom visits). The results were analyzed using the Bland-Altman method, curve fitting, and the two-sample t-test. In a second protocol, a team of 6 testers performed 10 measurements each, in random order, and the mean values of their readings were compared via one-way analysis of variance (ANOVA). The two-sample t -test indicated no significant difference between the mean values of % BF recorded by the two testers who conducted the first protocol ( P = 0.51). Moreover, intra- and intertester Bland-Altman plots were similar. The mean values of the readings of 6 testers differed by less than 0.46 %BF. According to one-way ANOVA, these differences were not significant ( P = 0.33). The influence of the tester on ADP results is statistically insignificant and smaller than the technical error of measurement of the BOD POD.
机译：据报道，该测试仪是空气体积体积描记法（ADP）潜在的可变性来源。这项工作使用BOD POD系统通过ADP评估了测试仪对人体脂肪百分比（％BF）评估的影响。我们分析了针对同一主题进行的一系列连续ADP试验。一对随机分配的测试人员进行了12组试验的5组。不同的科目准备（饮食，饮水和洗手间）设置不同。使用Bland-Altman方法，曲线拟合和两次样本t检验分析结果。在第二种协议中，由6名测试人员组成的团队分别以随机顺序进行10次测量，然后通过单向方差分析（ANOVA）比较其读数的平均值。两次样本t检验表明，执行第一方案的两个测试者记录的％BF平均值之间无显着差异（P = 0.51）。此外，测试者内部和测试者之间的Bland-Altman图也相似。 6个测试仪的读数平均值相差不到0.46％BF。根据单向方差分析，这些差异并不显着（P = 0.33）。测试仪对ADP结果的影响在统计上微不足道，并且小于BOD POD测量的技术误差。

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