老年人的步行技能可以进行评估：8 字形步行测试的有效性。
Walking skill can be assessed in older adults: validity of the Figure-of-8 Walk Test.
机构信息
Department of Physical Therapy, University of Pittsburgh, 6035 Forbes Tower, Pittsburgh, PA 15260, USA. rjh22+@pitt.edu
出版信息
Phys Ther. 2010 Jan;90(1):89-99. doi: 10.2522/ptj.20080121. Epub 2009 Dec 3.
BACKGROUND
The Figure-of-8 Walk Test (F8W) involves straight and curved paths and was designed to represent walking skill in everyday life.
OBJECTIVE
The purposes of this study were to validate the measure in older adults with walking difficulties and to explore correlates of the curved-path walking measure not represented by a straight-path walking measure.
DESIGN
Fifty-one community-dwelling older adults with mobility disability participated in 2 baseline visits as part of an intervention study.
METHODS
The F8W time, steps, and smoothness and measures of gait (gait speed, modified Gait Abnormality Rating Scale [GARS-M]), physical function (Late Life Function and Disabilities Index [LLFDI], Survey of Activities and Fear of Falling in the Elderly [SAFFE], Gait Efficacy Scale [GES], Physical Performance Test [PPT], and fall history), and movement control and planning (gait variability, Trail Making Test B [Trails B]) were recorded in each test session. Bivariate correlations for the F8W with each variable were conducted to examine concurrent and construct validity. Adjusted linear regression analyses were performed to explore the variance in mobility explained by F8W independent of gait speed.
RESULTS
Figure-of-8 Walk Test time correlated with gait (gait speed, r=-.570; GARS-M, r=.281), physical function (LLFDI function, r=-.469; SAFFE restriction subscale, r=.370; PPT, r=-.353), confidence in walking (GES, r=-.468), and movement control (step length coefficient of variation, r=.279; step width coefficient of variation, r=-.277; Trails B, r=.351). Figure-of-8 Walk Test steps correlated with step width variability (r=-.339) and was related to fear of falling (t=-2.50). All correlations were significant (P<.05).
LIMITATIONS
This pilot study had a small sample size, and further research is needed.
CONCLUSIONS
The F8W is a valid measure of walking skill among older adults with mobility disability and may provide information complementary to gait speed.
背景
8 字形步行测试（F8W）包括直线和曲线路径，旨在代表日常生活中的步行技能。
目的
本研究的目的是验证该测量方法在步行困难的老年人中的有效性，并探讨不能用直线行走测量来表示的曲线行走测量的相关因素。
设计
51 名居住在社区的有行走障碍的老年人参加了一项干预研究的 2 次基线访问。
方法
在每次测试中，记录 F8W 时间、步数和流畅性以及步态（步态速度、改良步态异常评分量表[GARS-M]）、身体功能（晚年功能和残疾指数[LLFDI]、老年人活动和跌倒恐惧调查[SAFFE]、步态效能量表[GES]、物理性能测试[PPT]和跌倒史）以及运动控制和计划（步态变异性、追踪测试 B[Trails B]）。进行 F8W 与每个变量的双变量相关性分析，以检验其同时性和结构有效性。进行调整后的线性回归分析，以探索 F8W 独立于步态速度对移动性的解释方差。
结果
8 字形步行测试时间与步态（步态速度，r=-.570；GARS-M，r=.281）、身体功能（LLFDI 功能，r=-.469；SAFFE 限制子量表，r=.370；PPT，r=-.353）、行走信心（GES，r=-.468）和运动控制（步长变异系数，r=.279；步宽变异系数，r=-.277；Trails B，r=.351）相关。8 字形步行测试的步数与步宽变异性（r=-.339）相关，与跌倒恐惧有关（t=-2.50）。所有相关性均具有统计学意义（P<.05）。
局限性
本初步研究样本量较小，需要进一步研究。
结论
F8W 是一种评估有行走障碍的老年人步行技能的有效方法，可能提供比步态速度更全面的信息。
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