Radford University Carilion, Department of Physical Therapy, Roanoke, VA, USA.
Chapman University, Department of Physical Therapy, Irvine, CA, USA.
Biomed Res Int. 2022 Mar 2;2022:7959830. doi: 10.1155/2022/7959830. eCollection 2022.
Recent protocols for posturographic assessment of postural control and balance have included head shake test conditions to challenge the vestibular contributions of postural control in an effort to increase the diagnostic accuracy of identifying individuals with impaired balance. However, evidence is limited regarding the test-retest reliability of such assessment protocols.
The purpose of this study was twofold: to determine the test-retest reliability of postural control assessment on the Biodex Biosway™, an accessible and field expedient tool for posturographic assessment, and to determine the test-retest reliability of the Head Shake Sensory Interaction and Balance Test (HS-SIB), an adaptation of the modified Clinical Test of Sensory Interaction and Balance (mCTSIB) which adds two head shake conditions to challenge the vestibular contributions to postural control. . This was a correlational time series cohort study completed in a biomechanics laboratory.
The sample consisted of nineteen healthy adults (10 females, 9 males). Sway Index, Equilibrium Score, and the area of the ellipse enclosing 95% of the anterior-posterior (AP) and medial-lateral (ML) center of gravity (COG) displacement (AREA) are the 3 summary variables. Standard Error of Measurement (SEM) and Minimum Detectable Change (MDC) are also reported.
Test-retest reliability was generally poor with limited exceptions. Moderate to good reliability was observed for the more challenging stance conditions (ICC range 0.58-0.81), including those with head shake.
Field-expedient systems, such as the Biodex BioSway™, may offer reliable posturographic testing where gold-standard methods are not available. Clinicians should be aware that less demanding test conditions have limited reliability; however, test-retest reliability of this assessment tool is improved with more challenged stance conditions and the inclusion of a head shake task.
最近的姿势图评估姿势控制和平衡的方案包括摇头测试条件，以挑战姿势控制的前庭贡献，努力提高识别平衡受损个体的诊断准确性。然而，关于这种评估方案的测试-再测试可靠性的证据是有限的。
本研究的目的有两个：确定 Biodex Biosway™上的姿势控制评估的测试-再测试可靠性，Biodex Biosway™是一种用于姿势图评估的易于获得和现场便捷的工具；并确定摇头感觉相互作用和平衡测试（HS-SIB）的测试-再测试可靠性，这是改良临床感觉相互作用和平衡测试（mCTSIB）的改编，该测试增加了两个摇头条件，以挑战前庭对姿势控制的贡献。这是在生物力学实验室完成的相关性时间序列队列研究。
样本由 19 名健康成年人组成（10 名女性，9 名男性）。摇摆指数、平衡评分和包含 95%前-后（AP）和内-外（ML）重心（COG）位移的椭圆区域（AREA）是 3 个汇总变量。还报告了测量标准误差（SEM）和最小可检测变化（MDC）。
除了一些例外，测试-再测试可靠性通常较差。具有挑战性的姿势条件（ICC 范围为 0.58-0.81）具有中度至良好的可靠性，包括那些具有摇头的条件。
在无法获得黄金标准方法的情况下，现场便捷系统，如 Biodex BioSway™，可能提供可靠的姿势图测试。临床医生应该意识到，较不苛刻的测试条件具有有限的可靠性；然而，该评估工具的测试-再测试可靠性随着更具挑战性的姿势条件和摇头任务的纳入而提高。
