Adams Valerie, Mathisen Bernice, Baines Surinder, Lazarus Cathy, Callister Robin
Priority Research Centre in Physical Activity and Nutrition, Faculty of Health and Medicine, School of Biomedical Sciences and Pharmacy, The University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia.
Dysphagia. 2014 Feb;29(1):83-95. doi: 10.1007/s00455-013-9486-5. Epub 2013 Sep 18.
The purpose of this study was to investigate the reliability of tongue and handgrip strength and endurance measurements in healthy adults using the Iowa Oral Performance Instrument. Fifty-one healthy participants (21 males, 30 females; age range = 19-57 years) were tested on four occasions 1 week apart to determine test-retest reliability. The primary outcome measures were isometric tongue and handgrip strength (best of three trials) and sustained isometric endurance. Small increases (changes in group mean) in both anterior (1.7 %) and posterior (2.5 %) tongue strength and handgrip strength (5 %) between weeks 1 and 2 were observed with no change in subsequent weeks, suggesting that there is only a small learning effect for these measurements. The within-subject variation (mean-typical error expressed as a coefficient of variation [CV]) indicated higher than desirable initial variation for anterior (CV 10.8 %) and posterior (CV 11.8 %) tongue strength and handgrip strength (CV 15.2 %) but this was reduced in weeks 2-4. Intraclass correlation coefficients (ICC) indicated acceptable and improved reliability for both anterior (ICC 0.77-0.90) and posterior (ICC 0.79-0.86) tongue strength and handgrip strength (ICC 0.69-0.91) after week 1. Additional exploratory analyses were conducted with a subset of data to determine whether two values within 5 kPa (tongue) or 15 kPa (handgrip) provide superior strength reliability. Neither tongue nor hand endurance measurements were sufficiently reliable. These findings suggest that tongue and handgrip strength values demonstrate acceptable reliability, especially if familiarization is provided. Further investigation is needed to reduce sources of variability in tongue endurance measurements.
本研究的目的是使用爱荷华口腔功能仪器，调查健康成年人舌部和握力强度及耐力测量的可靠性。51名健康参与者（21名男性，30名女性；年龄范围为19 - 57岁）在相隔1周的四个时间点接受测试，以确定重测信度。主要结局指标为等长舌部和握力强度（三次试验中的最佳值）以及持续等长耐力。在第1周和第2周之间，观察到前舌部力量（增长1.7%）、后舌部力量（增长2.5%）和握力强度（增长5%）均有小幅增加，且在随后几周没有变化，这表明这些测量仅存在较小的学习效应。受试者内变异（以变异系数[CV]表示的平均 - 典型误差）表明，前舌部力量（CV为10.8%）、后舌部力量（CV为11.8%）和握力强度（CV为15.2%）的初始变异高于理想水平，但在第周2 - 4周有所降低。组内相关系数（ICC）表明，第1周后，前舌部力量（ICC为0.77 - 0.90）、后舌部力量（ICC为0.79 - 0.86）和握力强度（ICC为0.69 - 0.91）的信度均可接受且有所提高。使用一部分数据进行了额外的探索性分析，以确定在5 kPa（舌部）或15 kPa（握力）范围内的两个值是否能提供更高的力量信度。舌部和手部耐力测量的信度均不足。这些发现表明，舌部和握力强度值具有可接受的信度，尤其是在提供了熟悉过程的情况下。需要进一步研究以减少舌部耐力测量中的变异来源。
