Duncan P W, Weiner D K, Chandler J, Studenski S
Graduate Program in Physical Therapy, Duke University, Durham, North Carolina.
J Gerontol. 1990 Nov;45(6):M192-7. doi: 10.1093/geronj/45.6.m192.
A new clinically accessible measure of balance, functional reach (FR), is the difference between arm's length and maximal forward reach, using a fixed base of support. The purposes of this study were to (a) establish FR as a measure of the margin of stability versus the laboratory measure, center of pressure excursion (COPE); (b) test reliability and precision, and (c) determine factors that influence FR, including age and anthropometrics. We evaluated FR in 128 volunteers (age 21-87 years). FR was determined with a precise electronic device and a simple clinical apparatus (yardstick). FR correlates with COPE (Pearson r = .71) and is precise (coefficient of variation = 2.5%) and stable (intraclass correlation coefficient across days = .81). Age and height influence FR. FR is portable, inexpensive, reliable, precise, and a reasonable clinical approximator of the margin of stability. FR may be useful for detecting balance impairment, change in balance performance over time, and in the design of modified environments for impaired older persons.
一种新的临床上可采用的平衡测量方法——功能性前伸（FR），是指在固定支撑基础上，手臂长度与最大前伸距离之间的差值。本研究的目的是：（a）将FR确立为一种相对于实验室测量指标——压力中心偏移（COPE）的稳定性边际测量方法；（b）测试其可靠性和精密度；（c）确定影响FR的因素，包括年龄和人体测量学指标。我们对128名志愿者（年龄21 - 87岁）进行了FR评估。FR通过精密电子设备和简单临床器械（卷尺）来测定。FR与COPE相关（皮尔逊r = 0.71），具有精密度（变异系数 = 2.5%）且稳定（不同日期的组内相关系数 = 0.81）。年龄和身高会影响FR。FR便携、廉价、可靠、精确，是稳定性边际的合理临床近似指标。FR可能有助于检测平衡功能障碍、平衡表现随时间的变化，以及为受损老年人设计改良环境。
