Aspire Health Centre, Aspire Academy for Sports Excellence, PO Box 22287, Doha, Qatar.
Phys Ther Sport. 2013 Feb;14(1):28-34. doi: 10.1016/j.ptsp.2012.02.004. Epub 2012 May 3.
To evaluate the reliability level of an innovative method using a standardized stretch force to assess the flexibility of lower limb muscle groups in highly-trained adolescent athletes and to examine whether interchanging the examiners affects the reliability of the measures.
Randomized test-retest study.
In ten athletes, the flexibility of eight lower limb muscle groups was examined on two occasions on both sides and in two phases: a video capture by three distinct operators and an analysis by three distinct analysers. The reliability of the measures was assessed by the coefficient of variation (CV, 90% CI). Between-analysers and between-operators standardized differences (i.e., Cohen's d) were calculated.
CV (%, 90% CI) were 8.3% (7.5; 9.3) for quadriceps, 3.3% (3.0; 3.7) for hamstrings, 7.2% (6.5-8.0) for adductors, 5.7% (5.1; 6.3) for gastrocnemius, 4.5% (4.0; 5.0) for soleus, 2.6% (2.3; 2.9) for hip flexors, 9.6% (8.6; 10.8) for hip medial rotators and 12.4% (12.2; 14.0) for hip lateral rotators. There was no substantial (i.e., Cohen's d < 0.2) difference in CV between all the possible operators/analysers combinations.
This method has a moderate-to-good reliability level and is examiner-independent. It may be implemented in future injury prevention programs, in order to monitor the flexibility of highly-trained adolescent athletes.
评估一种创新方法的可靠性水平，该方法使用标准化拉伸力来评估高水平青少年运动员下肢肌肉群的柔韧性，并检查更换测试者是否会影响测量的可靠性。
随机测试-再测试研究。
在 10 名运动员中，在两侧和两个阶段对 8 个下肢肌肉群的柔韧性进行了两次检查：由三位不同操作者进行视频捕捉和由三位不同分析者进行分析。通过变异系数（CV，90%CI）评估测量的可靠性。计算了分析者之间和操作者之间的标准化差异（即 Cohen's d）。
CV（%，90%CI）分别为：股四头肌 8.3%（7.5;9.3），腘绳肌 3.3%（3.0;3.7），内收肌 7.2%（6.5-8.0），腓肠肌 5.7%（5.1;6.3），比目鱼肌 4.5%（4.0;5.0），髋关节屈肌 2.6%（2.3;2.9），髋关节内旋肌 9.6%（8.6;10.8），髋关节外旋肌 12.4%（12.2;14.0）。在所有可能的操作者/分析者组合之间，CV 没有实质性差异（即 Cohen's d < 0.2）。
该方法具有中等到良好的可靠性水平，并且不依赖于测试者。它可能会被应用于未来的伤害预防计划中，以监测高水平青少年运动员的柔韧性。
