Weiner D K, Duncan P W, Chandler J, Studenski S A
Center for the Study of Aging and Human Development, Duke University, Durham, North Carolina.
J Am Geriatr Soc. 1992 Mar;40(3):203-7. doi: 10.1111/j.1532-5415.1992.tb02068.x.
To establish the concurrent validity of our new balance instrument, functional reach (FR = maximal safe standing forward reach), as a marker of physical frailty compared with other clinical measures of physical performance.
DESIGN, SETTING AND PARTICIPANTS: 45 community-dwelling persons age 66-104 were evaluated at one point in time using (1) FR (yardstick method), (2) Physical and Instrumental Activities of Daily Living (PADL, IADL), (3) Life Space, a 3-point measure of social mobility, (4) 10-item hierarchical mobility skills protocol, (5) 10-foot walking speed, (6) one-footed standing, and (7) tandem walking. Data analysis employed Spearman correlations. Partial r's were also calculated after controlling for age.
The FR performance range was broad (4.3-16.5 inches, mean 10.9, SD 3.1). Except for PADL, the association of FR with the other physical performance measures was strong, with r's ranging from 0.64-0.71; the association of FR with PADL was 0.48. After controlling for age in the regression analysis, partial r's ranged from 0.52-0.63. The association of FR with age was -0.50.
Based on cross-sectional data, FR is a practical instrument that correlates with physical frailty even more than with age.
建立我们新的平衡测量工具——功能性伸展（FR = 最大安全站立前伸距离）作为身体虚弱标志物的同时效度，并与其他身体功能的临床测量指标进行比较。
设计、背景与参与者：对45名年龄在66 - 104岁的社区居住者进行了一次评估，评估内容包括：（1）功能性伸展（用卷尺测量法）；（2）日常生活身体活动和工具性活动（PADL、IADL）；（3）生活空间，一种社会活动能力的三分制测量方法；（4）10项分层移动技能方案；（5）10英尺步行速度；（6）单脚站立；（7）前后脚连直线行走。数据分析采用斯皮尔曼相关性分析。在控制年龄后还计算了偏相关系数。
功能性伸展的表现范围很广（4.3 - 16.5英寸，平均10.9，标准差3.1）。除了PADL外，功能性伸展与其他身体功能测量指标的相关性很强，相关系数r范围为0.64 - 0.71；功能性伸展与PADL的相关系数为0.48。在回归分析中控制年龄后，偏相关系数r范围为0.52 - 0.63。功能性伸展与年龄的相关系数为 - 0.50。
基于横断面数据，功能性伸展是一种实用的测量工具，它与身体虚弱的相关性甚至超过与年龄的相关性。
