Department of Physical Therapy, University of Haifa, Haifa, Israel.
Department of Physical Therapy, University of Haifa, Haifa, Israel.
J Manipulative Physiol Ther. 2021 Nov-Dec;44(9):707-717. doi: 10.1016/j.jmpt.2022.03.007. Epub 2022 Jun 22.
The purpose of this study was to investigate the validity and reliability of a customized smartphone application (CSA) for postural sway (PS) assessment.
This validity and reliability study evaluated static balance by measuring PS in 29 healthy volunteers (15 women, 14 men, mean age 28 ± 5.11). Assessments included synchronized data collection using 3 systems: the CSA, a force plate, and the clinical modified balance error scoring system (mBESS). The experimental procedure included three 40-seconds long repetitions in 3 positions. Outcome measures included pathway and 95% ellipse area. Statistical analysis compared the developed application to both the force plate and the mBESS to test its validation and analyzed repeatability of the 3 experimental measurements.
Good to strong correlations were found between the CSA and the force plate in double and tandem stance (pathway r = 0.81-0.91), and moderate to high reliability was found for the CSA (0.66-0.75) and for the force plate (0.69-0.77) pathway measurements. The similarity in reliability results of the 2 devices and the high correlation both support the validity of the CSA. Furthermore, a high correlation was demonstrated between the CSA and the mBESS (r = 0.80), higher than the force plate and the mBESS.
The developed CSA was found valid and reliable in healthy young adults, and further research is needed to recommend it for clinical balance assessments. The CSA could therefore be considered for PS assessment in the clinical field.
本研究旨在探讨一款定制智能手机应用程序（CSA）在姿势摆动（PS）评估中的有效性和可靠性。
本有效性和可靠性研究通过测量 29 名健康志愿者（15 名女性，14 名男性，平均年龄 28±5.11 岁）的 PS 来评估静态平衡。评估包括使用 3 种系统同步采集数据：CSA、力板和临床改良平衡错误评分系统（mBESS）。实验程序包括在 3 种体位下进行 3 次 40 秒的重复。结果指标包括路径和 95%椭圆面积。统计分析将开发的应用程序与力板和 mBESS 进行比较，以测试其有效性，并分析 3 种实验测量的重复性。
CSA 在双脚和双脚并拢姿势下与力板具有良好到强的相关性（路径 r=0.81-0.91），CSA（0.66-0.75）和力板（0.69-0.77）路径测量具有中等至高度可靠性。两种设备的可靠性结果相似，以及高相关性均支持 CSA 的有效性。此外，CSA 与 mBESS 之间表现出高度相关性（r=0.80），高于力板与 mBESS 之间的相关性。
在健康年轻成年人中，开发的 CSA 被证明是有效和可靠的，需要进一步的研究来推荐其用于临床平衡评估。因此，CSA 可考虑用于临床领域的 PS 评估。
