de Hoon Esther W, Allum John H, Carpenter Mark G, Salis Christian, Bloem Bastiaan R, Conzelmann Martin, Bischoff Heike A
Department of Otorhinolaryngology, University Hospital, Basel, Switzerland.
Arch Phys Med Rehabil. 2003 Jun;84(6):838-42. doi: 10.1016/s0003-9993(02)04951-1.
To examine whether trunk sway and walking speed differ between elderly "stoppers" and "nonstoppers" during a shorter version of the stops walking while talking (SWWT) test-an observational assessment of impaired dual-task performance-and during a normal walking trial.
The original SWWT test was administered on the way to the test room (over a distance of 150m). Then, subjects were asked to walk 2 trials of 8m while wearing a trunk sway measuring device strapped firmly to their lower back. For the first 8-m trial, no questions were asked (control trial). During the second 8-m trial, subjects were asked an easy question (What is your age?) after walking 2m.
Long-stay geriatric care unit in Switzerland.
Seventeen institutionalized elderly (16 women, 1 man; mean age, 86.3y; range, 79-93y). Subjects had to be able to walk at least 150m and to understand simple questions.
Not applicable.
The amplitude of trunk sway angle and angular velocity in the forward-backward (pitch) and side-to-side (roll) directions and the duration of each trial were compared between the two 8-m walking trials with and without a question among subjects who did and did not come to a complete stop.
In the original SWWT test, 4 persons stopped walking while talking, compared with 8 persons who stopped in the short (8-m) walking trial when a question was asked. Persons who stopped during the 8-m trial when a question was asked had significantly longer walking durations (by 19s) and larger trunk roll angular displacements (by 5.5 degrees ) during trials, both with and without a question. For both stoppers and nonstoppers, duration was longer during the trial when a question was asked.
A fixed and brief walking distance, coupled with a single sudden question, provided an effective method of identifying subjects who stop walking while talking. These subjects are those who have slower walking speeds and more unstable trunk control in the roll plane even under normal walking conditions. Our findings support the predictive capabilities of a brief SWWT test for the unstable and fall-prone elderly, as well as the usefulness of objective trunk sway measures to identify gait instabilities.
在较短版本的边走边说停止行走（SWWT）测试（一种对双重任务执行受损的观察性评估）以及正常行走试验期间，研究老年“停止者”和“非停止者”之间的躯干摆动和步行速度是否存在差异。
在前往测试室的途中（距离为150米）进行原始的SWWT测试。然后，要求受试者佩戴牢固绑在其下背部的躯干摆动测量装置进行两次8米的行走试验。在第一次8米试验中，不提问（对照试验）。在第二次8米试验中，受试者在行走2米后被问到一个简单的问题（你多大了？）。
瑞士的长期老年护理病房。
17名机构养老的老年人（16名女性，1名男性；平均年龄86.3岁；范围79 - 93岁）。受试者必须能够行走至少150米并理解简单问题。
不适用。
在有问题和无问题的两次8米行走试验之间，比较了在行走时完全停止和未完全停止的受试者在前后（俯仰）和左右（横滚）方向上的躯干摆动角度幅度、角速度以及每次试验的持续时间。
在原始的SWWT测试中，4人在边走边说时停止行走，而在有问题的短（8米）行走试验中有8人停止行走。在有问题的8米试验中停止行走的人在试验期间，无论有无问题，行走持续时间显著更长（长19秒），躯干横滚角位移更大（大5.5度）。对于停止者和非停止者，在有问题的试验期间持续时间都更长。
固定且简短的行走距离，再加上一个突然的单一问题，提供了一种识别边走边说时停止行走的受试者的有效方法。这些受试者即使在正常行走条件下，行走速度也较慢，并且在横滚平面上躯干控制更不稳定。我们的研究结果支持简短SWWT测试对不稳定和易跌倒老年人的预测能力，以及客观躯干摆动测量用于识别步态不稳定的有用性。
