Association between a history of falls and the ability to multi-task in community-dwelling older people
Association between a history of falls and the ability to multi-task in community-dwelling older people
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DOI：
10.1007/bf03337738
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发表时间：
2010-10-01
影响因子：
4
通讯作者：
Oddsson, Lars I. E.
中科院分区：
文献类型：
--
作者：
Makizako, Hyuma;Furuna, Taketo;Oddsson, Lars I. E.
背景和目的：许多老年人在执行需要更多注意力的任务时摔倒。本研究的目的是确定反应时间的差异，在简单，双重和三重任务的条件下，需要不同水平的运动协调，平衡控制和认知注意力，群体之间的跌倒者和非跌倒者在社区居住的老年人。方法：本研究招募了87名居住在家中的老年人，57名女性和30名男性，年龄在75至91岁之间。通过响应视觉刺激尽快按下手持按钮来测量反应时间，在四种条件下测量：1）安静站立（简单任务）; 2）在安静站立期间向后计数（具有认知需求的双重任务）; 3）原地踏步（具有平衡需求的双重任务）;以及4）原地踏步时向后计数（具有认知和平衡需求的三重任务）。结果：29名（33.3%）参与者在过去一年中至少跌倒一次。在任何任务中，非跌倒者和跌倒者之间的反应时间没有统计学显著差异。与简单任务条件相比，两组在双重和三重任务期间的反应时间显着更长。具有平衡要求（原地踏步）的双重任务期间的反应时间与简单任务条件下的反应时间之间的比率与福尔斯史显著相关，并显示出最高的比值比（OR 3.16，95%CI 1.06-9.45，p=0.04）。结论：反应时间的相对变化，在一个双重任务与平衡的要求有关的历史福尔斯在社区居住的老年人。反应时间在双任务条件下的平衡需求更敏感的过去福尔斯比那些在一个双任务的认知需求。（Aging Clin Exp Res 2010; 22：427-432）（C）2010，Editrice Kurtis
Background and aims: Many older people fall when they perform tasks which require increased attention. The aim of this study was to determine differences in reaction times, during simple-, dual- and triple-task conditions requiring differing levels of motor coordination, balance control and cognitive attention, between groups of fallers and non-fallers in community-dwelling older individuals. Methods: The study involved the recruitment of 87 older individuals living at home, 57 women and 30 men aged 75 to 91 years. Reaction times, measured by pushing a handheld button as quickly as possible in response to a visual stimulus, were measured in four conditions: 1) quiet standing (simple-task); 2) counting backward during quiet standing (dual-task with cognitive demand); 3) stepping in place (dual-task with balance demand); and 4) counting backward while stepping in place (triple-task with cognitive and balance demands). Results: Twenty-nine (33.3%) participants had fallen at least once during the past year. There were no statistically significant differences in reaction times between non-fallers and fallers during any of the tasks. Reaction times were significantly longer during the dual- and triple-tasks compared with the simple-task conditions in both groups. The ratio between reaction times during dual-tasks with balance demands (stepping in place) and those in the simple-task condition were significantly related to a history of falls and showed the highest odds ratio (OR 3.16, 95% CI 1.06-9.45, p=0.04). Conclusions: Relative changes in reaction times during a dual-task with balance demands were related to a history of falls in community-dwelling older individuals. Reaction times in dual-task conditions with a balance demand were more sensitive to past falls than those during a dual-task with cognitive demands. (Aging Clin Exp Res 2010; 22: 427-432) (C) 2010, Editrice Kurtis