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Intra-tester and inter-tester reliability of the MicroFET 3 hand-held dynamometer.

机译：MicroFET 3手持式测功机的测试仪内部和测试仪间可靠性。

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Background: The reliability of the MicroFET 3 has not previously been reported in the literature. The aim of this study was to evaluate intra-tester and inter-tester reliability of the MicroFET3 hand-held dynamometer (HHD) in three lower limb muscle groups. Methods: Maximum voluntary isometric contraction (MVIC) of hip extension, knee extension and ankle plantar-flexion were measured in 38 healthy participants (males=18, females= 20) by two testers on separate days using the MicroFET3 HHD. The reliability analysis was carried out using intra-class correlation coefficients (ICCs) to measure association and Band and Altman plots to demonstrate agreement. Results: The results showed that intra-tester reliability was moderate to excellent; with associations ranging from ICC 0.56 - 0.92 and higher agreement for knee and ankle than hip measurements was shown. Inter-tester reliability was lower, with hip and knee associations ranging from ICC 0.60 - 0.66. Ankle measurements intertester associations were particularly low (ICC 0.23 and 0.15). These values would not be considered acceptable for clinical use. Bland and Altman plots used to demonstrate agreement between testers displayed a considerable lack of agreement with discrepancies of up to 150N noted in measurements. Conclusion: The results suggest that the MicroFET3 HHD displayed moderate to excellent intra-tester reliability and poor to moderate inter-tester reliability and agreement with discrepancies noted between muscle groups. While use of this instrument can be recommended when consistently used by a single tester, further reliability analysis should be carried out before this instrument could be recommended for use by different testers in the clinical setting.
机译：背景技术：MicroFET 3的可靠性以前没有在文献中报道过。这项研究的目的是评估三个下肢肌肉组中MicroFET3手持式测功机（HHD）的测试仪内和测试仪间可靠性。方法：使用MicroFET3 HHD，由两名测试者分别在38天（男性= 18，女性= 20）中对38名健康参与者（男性= 18，女性= 20）进行了髋关节伸展，膝盖伸展和踝足屈曲的最大自愿等距收缩（MVIC）。可靠性分析是使用类内相关系数（ICC）进行的，用于测量关联，并通过Band和Altman图来证明一致性。结果：结果表明，测试者内部的可靠性是中等到极好的；结果显示，ICC在0.56-0.92之间，并且膝关节和踝关节的一致性高于髋关节测量。测试者间的可靠性较低，髋部和膝盖的关联性在ICC 0.60-0.66之间。脚踝测量者之间的关联特别低（ICC为0.23和0.15）。这些值对于临床使用将不被接受。用于证明测试人员之间一致性的Bland和Altman图显示，在测量中发现的最大差异不超过150N时，明显缺乏一致性。结论：结果表明，MicroFET3 HHD表现出中等至出色的测试者内部可靠性，差于中等的测试者内部可靠性，并且与肌肉组之间的差异一致。虽然可以建议由单个测试人员始终使用此仪器，但在临床环境中建议由不同测试人员使用此仪器之前，应进行进一步的可靠性分析。

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