Boer P H, Moss S J
Physical Activity, Sport and Recreation (PhASRec) Research Focus Area, Faculty of Health Sciences, North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom 2520, South Africa.
Physical Activity, Sport and Recreation (PhASRec) Research Focus Area, Faculty of Health Sciences, North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom 2520, South Africa.
Res Dev Disabil. 2016 Jan;48:176-85. doi: 10.1016/j.ridd.2015.10.022. Epub 2015 Nov 21.
The purpose of the study was to explore the test-retest reliability and minimal detectable change of selected functional fitness test items in adults with Down syndrome.
Forty-three adults with Down syndrome (24 men and 19 women) aged 18-50 years completed a battery of tests twice in a two-week period. The battery of tests consisted of two balance items, two flexibility items, five muscular strength and endurance items, two aerobic items, and one functional task. All items were considered valid and reliable tests in a general elderly or intellectually disabled population. The test-retest relative reliability for all repeated tests was assessed with intraclass correlation coefficient performing one-way analysis of variance. The test-retest absolute variability was measured by using the standard error of measurement (SEM) to calculate the minimal detectable change at the 90% confidence interval (MDC90). Reliability data was visualised with a Bland-Altman plot.
All tests showed excellent intraclass correlation coefficients (ICC's>0.9). All SEM values demonstrated acceptable measurement precision (SEM<SD/2). Values for MDC90 are provided for all 12 tests. The analyses indicated that there was no major systematic bias in the plots. The scatter around the Bland-Altman was distributed randomly.
All twelve functional fitness tests demonstrated adequate feasibility and relative and absolute test-retest reliability in adults with Down syndrome in South Africa. Information of this nature will help to monitor performance alterations over time and success of training interventions.
本研究旨在探讨唐氏综合征成年人特定功能体能测试项目的重测信度和最小可检测变化。
43名年龄在18至50岁之间的唐氏综合征成年人（24名男性和19名女性）在两周内完成了一系列测试两次。该系列测试包括两项平衡项目、两项柔韧性项目、五项肌肉力量和耐力项目、两项有氧运动项目以及一项功能性任务。所有项目在一般老年或智力残疾人群中均被认为是有效且可靠的测试。使用组内相关系数进行单因素方差分析来评估所有重复测试的重测相对信度。通过测量标准误（SEM）来计算90%置信区间的最小可检测变化（MDC90），以此测量重测绝对变异性。信度数据用Bland-Altman图进行可视化展示。
所有测试均显示出优秀的组内相关系数（ICC>0.9）。所有SEM值均显示出可接受的测量精度（SEM<SD/2）。为所有12项测试提供了MDC90的值。分析表明，图中没有重大的系统偏差。Bland-Altman图周围的散点分布是随机的。
在南非，所有十二项功能体能测试在唐氏综合征成年人中均显示出足够的可行性以及相对和绝对的重测信度。这类信息将有助于监测随时间推移的表现变化以及训练干预的成效。
