Reliability of isometric muscle strength tests for the trunk, hands and shoulders
Reliability of isometric muscle strength tests for the trunk, hands and shoulders
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DOI：
10.1016/s0169-8141(01)00044-0
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发表时间：
2001-12-01
影响因子：
3.1
通讯作者：
Hansen, K
中科院分区：
文献类型：
--
作者：
Essendrop, M;Schibye, B;Hansen, K
本研究的目的是确定躯干、手和肩膀等长肌肉力量测试的可靠性。同时，强调了相关系数作为可靠性的有用表现的不足。 19 名健康受试者以 1 周的间隔进行了一次测试和重新测试。测量包括等长背部屈曲、背部伸展、肩部抬高、肩部外展和握力期间的最大随意收缩（MVC）的记录。在初始测试之前没有对设备进行习惯化，因为出于实际原因这在职业环境中通常是不可能的。所有 Pearson 和组内相关系数的 r 值均高于 0.9。然而，从测试到重新测试，背部屈曲、背部伸展和握力的肌肉力量测量值都有显着增加。总之，所有测试都显示出按 95% 置信区间判断的群体水平的合理可靠性，但根据计算的一致性限度，在个体水平上变化很大。如果不考虑这种变化，则测试在个人水平上的用途可能有限。最后，这项研究清楚地表明了相关系数作为可靠性的单一数字估计的不足。 (C) 2001 Elsevier Science B.V. 保留所有权利。
The objective of this study was to determine the reliability of isometric muscle strength tests for the trunk, hand and shoulders. At the same time the inadequacy of correlation coefficients as useful manifestation of reliability was highlighted. Nineteen healthy subjects performed a test and retest with exactly 1 week interval. The measurements consisted of recordings of maximal voluntary contractions (MVC) during isometric back flexion, back extension, shoulder elevation, shoulder abduction and handgrip. No habituation to the equipment was made before the initial test since this is often for practical reasons not possible in occupational settings. All Pearson and Intraclass correlation coefficients showed r-values above 0.9. However, a significant increase from test to retest was present in the muscle strength measures for back flexion, back extension and handgrip. In conclusion all tests showed reasonable reliability on group level judged by 95% confidence intervals, however on the individual level the variation was wide according to the calculated limits of agreement. If this variation is not taken into consideration the tests can be of limited use on individual level. Finally, this study clearly showed the inadequacy of correlation coefficients as a single number estimate of reliability. (C) 2001 Elsevier Science B.V. All rights reserved.