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首页> 外文期刊>Physiotherapy theory and practice >Reliability and validity of the Performance Recorder 1 for measuring isometric knee flexor and extensor strength
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Reliability and validity of the Performance Recorder 1 for measuring isometric knee flexor and extensor strength

机译：Performance Recorder 1用于测量等距膝盖屈肌和伸肌力量的可靠性和有效性

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Background Muscular strength is a key parameter of rehabilitation programs and a strong predictor of functional capacity. Traditional methods to measure strength, such as manual muscle testing (MMT) and hand-held dynamometry (HHD), are limited by the strength and experience of the tester. The Performance Recorder 1 (PR1) is a strength assessment tool attached to resistance training equipment and may be a time- and cost-effective tool to measure strength in clinical practice that overcomes some limitations of MMT and HHD. However, reliability and validity of the PR1 have not been reported. Methods: Test-retest and inter-rater reliability was assessed using the PR1 in healthy adults (n = 15) during isometric knee flexion and extension. Criterion-related validity was assessed through comparison of values obtained from the PR1 and Biodex? isokinetic dynamometer. Results: Test-retest reliability was excellent for peak knee flexion (intra-class correlation coefficient [ICC] of 0.96, 95% CI: 0.85, 0.99) and knee extension (ICC = 0.96, 95% CI: 0.87, 0.99). Inter-rater reliability was also excellent for peak knee flexion (ICC = 0.95, 95% CI: 0.85, 0.99) and peak knee extension (ICC = 0.97, 95% CI: 0.91, 0.99). Validity was moderate for peak knee flexion (ICC = 0.75, 95% CI: 0.38, 0.92) but poor for peak knee extension (ICC = 0.37, 95% CI: 0, 0.73). Conclusions: The PR1 provides a reliable measure of isometric knee flexor and extensor strength in healthy adults that could be used in the clinical setting, but absolute values may not be comparable to strength assessment by gold-standard measures.
机译：背景肌肉力量是康复计划的关键参数，也是功能能力的强力预测指标。传统的力量测量方法，例如手动肌肉测试（MMT）和手持测功（HHD），受到测试仪力量和经验的限制。 Performance Recorder 1（PR1）是连接到阻力训练设备上的力量评估工具，并且可能是一种节省时间和成本效益的工具，可以在临床实践中测量强度，克服了MMT和HHD的某些限制。但是，尚未报告PR1的可靠性和有效性。方法：在健康的成年人（n = 15）等距膝盖屈伸中使用PR1评估重测和评定者之间的可靠性。通过比较从PR1和Biodex？获得的值来评估与标准相关的有效性。等速测功机。结果：重测的可靠性对于峰屈膝（组内相关系数[ICC]为0.96，95％CI：0.85，0.99）和膝部伸展（ICC = 0.96，95％CI：0.87，0.99）非常出色。评估者之间的可靠性在峰屈膝度（ICC = 0.95，95％CI：0.85，0.99）和峰屈膝度（ICC = 0.97，95％CI：0.91，0.99）方面也很出色。膝关节屈曲高峰的有效性适中（ICC = 0.75，95％CI：0.38，0.92），但膝关节屈伸高峰的有效性（ICC = 0.37，95％CI：0，0.73）。结论：PR1提供了健康成年人等距膝盖屈肌和伸肌力量的可靠测量方法，可用于临床，但绝对值可能无法与金标准测量结果相提并论。

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