Rosengren Karl S, Rajendran Karthikeyan, Contakos Jonas, Chuang Li-Ling, Peterson Melissa, Doyle Richard, McAuley Edward
Department of Kinesiology, University of Illinois at Urbana-Champaign, IL 61801, United States.
Gait Posture. 2007 Feb;25(2):215-21. doi: 10.1016/j.gaitpost.2006.03.009. Epub 2006 May 2.
The goal of this investigation was to explore the use of spectral analysis to examine the data obtained during computerized dynamic posturography (CDP). In particular, we examined whether spectral analysis would provide more detailed information about underlying postural control strategies and potential learning across conditions and trials of the sensory organization test (SOT). Twenty older women between the ages of 60 and 72 (mean=65.2) were assessed using standard testing protocol. Participants showed significant improvements from the first to the second trials in their equilibrium scores in the more difficult conditions. This finding was reflected in the spectral analysis data by a shift in the frequency distribution towards greater power in the lower frequency range. This frequency change likely reflects a change in the ankle strategy used to maintain balance during the more difficult conditions.
本研究的目的是探索使用频谱分析来检查在计算机化动态姿势描记法（CDP）期间获得的数据。具体而言，我们研究了频谱分析是否会提供有关潜在姿势控制策略以及感觉组织测试（SOT）在不同条件和试验下潜在学习情况的更详细信息。使用标准测试方案对20名年龄在60至72岁之间（平均年龄 = 65.2岁）的老年女性进行了评估。在更困难的条件下，参与者从第一次试验到第二次试验的平衡分数有显著提高。这一发现通过频谱分析数据中频率分布向低频范围更大功率的转变得以体现。这种频率变化可能反映了在更困难条件下用于维持平衡的脚踝策略的变化。
