Trunk sway measures of postural stability during clinical balance tests: Effects of age
Trunk sway measures of postural stability during clinical balance tests: Effects of age
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DOI：
10.1093/gerona/56.7.m438
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发表时间：
2001-07-01
影响因子：
5.1
通讯作者：
Pierchala, K
中科院分区：
文献类型：
--
作者：
Gill, J;Allum, JHJ;Pierchala, K
背景目前的临床测试，屏幕平衡障碍的主要缺点是依赖于检查者的主观评估的平衡控制。为了克服这个缺点，我们进行了调查。使用躯干摇摆的量化测量，正常受试者的年龄相关差异用于常用的临床平衡测试。测试了三个年龄组：年轻（15 - 25岁：n = 48）、中年（45 - 55岁：n = 50）和老年（65 - 75岁：n = 49）。每名受试者执行一系列14项任务，这些任务类似于平衡方案中感觉相互作用的Tinetti和临床测试中包含的任务。测试组合包括在正常、改变的视觉（闭眼）和改变的本体感受（泡沫支撑表面）条件下进行的站立和步态任务。躯干摇摆的量化是使用一个系统，测量躯干角速度和位置在滚转（横向）和俯仰（前后）平面的水平较低的背部。摇摆幅度和速度的范围进行了检查的年龄差异与方差分析技术。年龄组之间的比较显示出一些差异。老年受试者的躯干角摆动和角速度的范围从中年和年轻受试者区分，因为两者都是更大的姿态和站立相关的任务（串联行走）在滚动和俯仰平面。最显著的四月组差异（F = 30。p <0.0001），在睁着眼睛单腿站立在正常地板上或泡沫支撑表面上。其次是在正常地板上连续走8步（F = 13.p <0.0001）。用于步态任务。例如在旋转或俯仰头部或闭上眼睛的情况下走五步，俯仰和滚动速度范围受年龄影响，中年受试者显示出最小的范围，其次是老年受试者，然后是年轻受试者（F = 12，p <.0001）。在一组低障碍上行走也产生了年龄组之间的持续时间和角度摇摆的显着差异。相反。任务持续时间是唯一的变量显着影响时，走上走下一组楼梯。所有任务的一个有趣的发现是每个人群的价值观的不同传播。人口分布在所有年龄段都是偏态的，并随着年龄的增长而扩大。在站立和步态任务期间躯干角摇摆的准确测量提供了可靠地测量平衡稳定性随年龄变化的简单方法，并且在筛选容易跌倒的人的平衡障碍时可以证明是有用的。
Background. The major disadvantage of current clinical tests that screen for balance disorders is a reliance on an examiner's subjective assessment of equilibrium control. To overcome this disadvantage we investigated. using quantified measures of trunk sway, age-related differences of normal subjects for commonly used clinical balance tests.Methods. Three age groups were tested: young (15-25 years: n = 48), middle-aged (45-55 years: n = 50) and elderly (65-75 years: n = 49). Each subject performed a series of fourteen tasks similar to those included in the Tinetti and Clinical Test of Sensory interaction in Balance protocols. The test battery comprised stance and gait tasks performed under normal, altered visual (eyes closed), and altered proprioceptive: (foam support surface) conditions. Quantification of trunk sway was performed using a system that measured trunk angular velocity and position in the roll (lateral) and pitch (fore-aft) planes at the level of the lower hack. Ranges of sway amplitude and velocity were examined for age-differences with ANOVA techniques.Results. A comparison between age groups showed several differences. Elderly subjects were distinguished from both middle-aged and young subjects by the range of trunk angular sway and angular velocity because both were greater in roll and pitch planes for stance and stance-related tasks (tandem walking). The most significant apr group differences (F = 30. p < .0001) were found for standing on one leg on a normal floor or on a foam support surface with eyes open. Next in significance wa walking eight tandem steps on a normal floor (F = 13.p < .0001). For gait tasks. such as walking five steps while rotating or pitching the head or with eyes closed, pitch and roll velocity ranges were influenced by age with middle-aged subjects showing the smallest ranges followed by elderly subjects and then young subjects (F = 12, p < .0001). Walking over a set of low barriers also yielded significant differences between age groups for duration and angular sway. In contrast. task duration was the only variable significantly influenced when walking up and down a set of stairs. An interesting finding for all tasks was the different spread of values for each population. Population distributions were skewed for all ages and broadened with age.Conclusions. Accurate measurement of trunk angular sway during stance and gait tasks provides a simple way of reliably measuring changes in balance stability with age and could prove useful when screening for balance disorders of those prone to fall.