Vanicek Natalie, King Stephanie A, Gohil Risha, Chetter Ian C, Coughlin Patrick A
Discipline of Exercise and Sport Science, Faculty of Health Sciences, University of Sydney.
J Vis Exp. 2013 Dec 11(82):e51077. doi: 10.3791/51077.
Computerized dynamic posturography with the EquiTest is an objective technique for measuring postural strategies under challenging static and dynamic conditions. As part of a diagnostic assessment, the early detection of postural deficits is important so that appropriate and targeted interventions can be prescribed. The Sensory Organization Test (SOT) on the EquiTest determines an individual's use of the sensory systems (somatosensory, visual, and vestibular) that are responsible for postural control. Somatosensory and visual input are altered by the calibrated sway-referenced support surface and visual surround, which move in the anterior-posterior direction in response to the individual's postural sway. This creates a conflicting sensory experience. The Motor Control Test (MCT) challenges postural control by creating unexpected postural disturbances in the form of backwards and forwards translations. The translations are graded in magnitude and the time to recover from the perturbation is computed. Intermittent claudication, the most common symptom of peripheral arterial disease, is characterized by a cramping pain in the lower limbs and caused by muscle ischemia secondary to reduced blood flow to working muscles during physical exertion. Claudicants often display poor balance, making them susceptible to falls and activity avoidance. The Ankle Brachial Pressure Index (ABPI) is a noninvasive method for indicating the presence of peripheral arterial disease and intermittent claudication, a common symptom in the lower extremities. ABPI is measured as the highest systolic pressure from either the dorsalis pedis or posterior tibial artery divided by the highest brachial artery systolic pressure from either arm. This paper will focus on the use of computerized dynamic posturography in the assessment of balance in claudicants.
使用 EquiTest 的计算机化动态姿势描记法是一种在具有挑战性的静态和动态条件下测量姿势策略的客观技术。作为诊断评估的一部分，早期发现姿势缺陷很重要，以便可以开出适当且有针对性的干预措施。EquiTest 上的感觉组织测试 (SOT) 确定个体对负责姿势控制的感觉系统（本体感觉、视觉和前庭）的使用情况。本体感觉和视觉输入会因校准的摆动参考支撑面和视觉环境而改变，它们会根据个体的姿势摆动在前后方向上移动。这会产生相互矛盾的感觉体验。运动控制测试 (MCT) 通过以前后平移的形式产生意外的姿势干扰来挑战姿势控制。平移的幅度是分级的，并计算从干扰中恢复的时间。间歇性跛行是外周动脉疾病最常见的症状，其特征是下肢出现痉挛性疼痛，是由体力活动期间流向工作肌肉的血流量减少继发的肌肉缺血引起的。跛行者通常表现出平衡能力差，容易跌倒并避免活动。踝臂压力指数 (ABPI) 是一种用于指示外周动脉疾病和间歇性跛行（下肢常见症状）存在的非侵入性方法。ABPI 的测量方法是将足背动脉或胫后动脉的最高收缩压除以任一手臂肱动脉的最高收缩压。本文将重点关注计算机化动态姿势描记法在评估跛行者平衡方面的应用。
