Horstmann Hauke, Medico Pascal, Lasch Florian, Krutsch Werner, Weber-Spickschen Thomas Sanjay
Department of Orthopaedic Surgery, Hannover Medical School, Hannover 30625, Germany.
Institute of Sports Medicine, Hannover Medical School, Hannover 30625, Germany.
Open Access J Sports Med. 2020 Jan 22;11:43-49. doi: 10.2147/OAJSM.S214598. eCollection 2020.
Isokinetic testing is used as a standard tool in measuring strength in professional athletes. It is often used to evaluate improvement during rehabilitation. The disadvantages of isokinetic testing include its costs, the fact that it is not portable, and its risk of injury, which makes it not suitable for early postoperative rehabilitation.
The aim of this study was to investigate the relationship between the results of the isokinetic testing and the measurements of an application-based knee-training device.
Exploratory diagnostic study.
In this monocentric study, 100 subjects performed an isokinetic maximum strength examination and an assessment on the application-based knee-training device in a randomized order. The isokinetic testing was based on the Swiss Olympic protocol with 3 sets of 5 repetitions of maximum strength testing for flexion and extension. The subjects consisted of 50 healthy professional athletes and 50 healthy recreational athletes, half male and half female, between the ages of 18 to 30 years old.
No medical or technical issues were reported. The analysis of the relationship between application-based knee-training device and extension showed a Pearson correlation coefficient of r=0.667 for the left knee and r=0.604 for the right knee. For flexion, the Pearson correlation coefficient was r=0.640 for the left side and r=0.673 for the right side. When strength measured by the application-based knee-training device was adjusted for height and weight of the subjects, the Pearson correlation was even stronger (extension left: r=0.727, right: r=0.689; flexion left: r=0.641, right: r=0.711).
The study shows a moderate to high correlation between isokinetic testing and the application-based knee-training device. These results suggest that the application-based knee-training device is effective for early strength rehabilitation without the risk of injury.
等速测试是测量职业运动员力量的标准工具。它常用于评估康复过程中的进展。等速测试的缺点包括成本高、不便于携带以及存在受伤风险，这使其不适用于术后早期康复。
本研究的目的是调查等速测试结果与一种基于应用程序的膝关节训练设备测量结果之间的关系。
探索性诊断研究。
在这项单中心研究中，100名受试者以随机顺序进行了等速最大力量测试和基于应用程序的膝关节训练设备评估。等速测试基于瑞士奥林匹克协议，进行3组，每组5次重复的屈伸最大力量测试。受试者包括50名健康的职业运动员和50名健康的业余运动员，年龄在18至30岁之间，男女各半。
未报告任何医学或技术问题。基于应用程序的膝关节训练设备与伸展之间关系的分析显示，左膝的皮尔逊相关系数r = 0.667，右膝为r = 0.604。对于屈曲，左侧的皮尔逊相关系数为r = 0.640，右侧为r = 0.673。当根据受试者的身高和体重对等速测试所测力量进行调整后，皮尔逊相关性更强（左膝伸展：r = 0.727，右膝：r = 0.689；左膝屈曲：r = 0.641，右膝：r = 0.711）。
该研究表明等速测试与基于应用程序的膝关节训练设备之间存在中度至高度相关性。这些结果表明，基于应用程序的膝关节训练设备对于早期力量康复有效且无受伤风险。
