Department of Geriatrics and Geriatric Rehabilitation, Waldkrankenhaus St. Marien gGmbH, Rathsbergerstrasse 57, 91054 Erlangen, Germany.
Arch Gerontol Geriatr. 2010 Nov-Dec;51(3):e100-5. doi: 10.1016/j.archger.2010.01.009. Epub 2010 Feb 13.
Frequency-based analysis of body sway has been used to distinguish between healthy young, healthy elderly adults and elderly adults with Huntingtons disease. Our aim was to assess the reliability of spectral-based outcomes of the centre of pressure (CoP) kinematics in order to determine if these outcomes could be tested for their capability to distinguish between elderly fallers and non-fallers in a future study. We have studied balance for 30 community dwelling healthy older adults 60 years or older. Four test conditions were used. Three successive trials were performed for each condition. CoP kinematics were estimated with a force platform with three strain gauges set in a triangular position. The frequency content of these signals was estimated. Intrasession correlation coefficients (ICC's) were then calculated for all test conditions. The reliability of the selected parameters varied between low and high (ICC 0.652-0.939). The ICC's for the narrow stance tests were higher compared to tests with normal standing conditions (0.771-0.94) to (0.652-0.865). The highest value was obtained in the high frequency band (0.939). These measures should be viewed with caution when screening geriatric patients because their reliability cannot always be assumed.
基于频率的身体摆动分析已被用于区分健康的年轻成年人、健康的老年成年人和亨廷顿病老年成年人。我们的目的是评估基于压力中心（CoP）运动学的频谱结果的可靠性，以确定这些结果是否可以在未来的研究中用于区分老年跌倒者和非跌倒者。我们对 30 名居住在社区的健康老年人（年龄在 60 岁或以上）进行了平衡研究。使用了四种测试条件。每种条件进行了三次连续试验。CoP 运动学使用设置在三角形位置的三个应变计的力平台进行估计。估计了这些信号的频率内容。然后计算了所有测试条件的组内相关系数（ICC）。所选参数的可靠性在低和高之间变化（ICC 0.652-0.939）。与正常站立条件下的测试相比，窄距测试的 ICC 更高（0.771-0.94 至 0.652-0.865）。高频带获得了最高值（0.939）。在筛选老年患者时，应谨慎看待这些措施，因为不能总是假设它们的可靠性。
