Zemková E, Štefániková G, Muyor J M
Department of Sports Kinanthropology, Faculty of Physical Education and Sports, Comenius University in Bratislava, Slovakia; Sports Technology Institute, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Slovakia.
Department of Sports Educology and Sports Humanistic, Faculty of Physical Education and Sports, Comenius University in Bratislava, Slovakia.
Hum Mov Sci. 2016 Aug;48:142-52. doi: 10.1016/j.humov.2016.05.002. Epub 2016 May 18.
This study investigates test-retest reliability and diagnostic accuracy of the load release balance test under four varied conditions. Young, early and late middle-aged physically active and sedentary subjects performed the test over 2 testing sessions spaced 1week apart while standing on either (1) a stable or (2) an unstable surface with (3) eyes open (EO) and (4) eyes closed (EC), respectively. Results identified that test-retest reliability of parameters of the load release balance test was good to excellent, with high values of ICC (0.78-0.92) and low SEM (7.1%-10.7%). The peak and the time to peak posterior center of pressure (CoP) displacement were significantly lower in physically active as compared to sedentary young adults (21.6% and 21.0%) and early middle-aged adults (22.0% and 20.9%) while standing on a foam surface with EO, and in late middle-aged adults on both unstable (25.6% and 24.5%) and stable support surfaces with EO (20.4% and 20.0%). The area under the ROC curve >0.80 for these variables indicates good discriminatory accuracy. Thus, these variables of the load release balance test measured under unstable conditions have the ability to differentiate between groups of physically active and sedentary adults as early as from 19years of age.
本研究调查了在四种不同条件下负荷释放平衡测试的重测信度和诊断准确性。年轻、中年早期和晚期的身体活跃和久坐不动的受试者在两次测试中进行该测试，两次测试间隔1周，分别站在（1）稳定或（2）不稳定表面上，（3）睁眼（EO）和（4）闭眼（EC）。结果表明，负荷释放平衡测试参数的重测信度良好至优秀，组内相关系数（ICC）值较高（0.78 - 0.92），标准误（SEM）较低（7.1% - 10.7%）。与久坐不动的年轻成年人（分别为21.6%和21.0%）和中年早期成年人（分别为22.0%和20.9%）相比，身体活跃的受试者在睁眼站在泡沫表面时，压力中心（CoP）位移的峰值和达到峰值的时间显著更低；在中年晚期成年人中，无论是在不稳定表面（分别为25.6%和24.5%）还是在稳定支撑表面且睁眼（分别为20.4%和20.0%）时，情况均如此。这些变量的ROC曲线下面积>0.80，表明具有良好的鉴别准确性。因此，在不稳定条件下测量的负荷释放平衡测试的这些变量能够早在19岁时就区分身体活跃和久坐不动的成年人组。
