Laboratório de Biomecânica, Centro de Desportos, Universidade Federal de Santa Catarina, Campus Reitor João David Ferreira Lima, Trindade, Florianópolis, Santa Catarina, CEP 88040-900, Brazil.
Laboratório de Estudos do Desempenho Humano, Faculdade de Educação Física e Fisioterapia, Universidade Federal do Amazonas, Mini-Campus, Coroado II, Manaus, Amazonas, CEP 69080-005, Brazil.
Aging Clin Exp Res. 2018 Jun;30(6):595-603. doi: 10.1007/s40520-017-0820-x. Epub 2017 Aug 23.
Accuracy is essential to the validity of functional capacity measurements.
To evaluate the error of measurement of functional capacity tests for elders and suggest the use of the technical error of measurement and credibility coefficient.
Twenty elders (65.8 ± 4.5 years) completed six functional capacity tests that were simultaneously filmed and timed by four evaluators by means of a chronometer. A fifth evaluator timed the tests by analyzing the videos (reference data).
The means of most evaluators for most tests were different from the reference (p < 0.05), except for two evaluators for two different tests. There were different technical error of measurement between tests and evaluators. The Bland-Altman test showed difference in the concordance of the results between methods. Short duration tests showed higher technical error of measurement than longer tests. In summary, tests timed by a chronometer underestimate the real results of the functional capacity.
Difference between evaluators' reaction time and perception to determine the start and the end of the tests would justify the errors of measurement.
Calculation of the technical error of measurement or the use of the camera can increase data validity.
准确性对于功能能力测量的有效性至关重要。
评估老年人功能能力测试的测量误差，并建议使用测量技术误差和可信度系数。
20 名老年人（65.8±4.5 岁）完成了六项功能能力测试，由四名评估员同时使用秒表进行拍摄和计时。第五名评估员通过分析视频（参考数据）来计时测试。
除了两名评估员在两项不同的测试中，大多数评估员对大多数测试的平均值与参考值不同（p<0.05）。不同的测试和评估者之间存在不同的测量技术误差。Bland-Altman 检验显示两种方法之间结果的一致性存在差异。持续时间较短的测试比持续时间较长的测试具有更高的测量技术误差。总的来说，使用秒表计时的测试低估了功能能力的真实结果。
评估员的反应时间和感知差异来确定测试的开始和结束，这可以解释测量误差。
计算测量技术误差或使用相机可以提高数据的有效性。
