Section for Health Promotion, Department of Health and Medical Care, National Center for Geriatrics and Gerontology, Obu, Japan.
Geriatr Gerontol Int. 2013 Jan;13(1):161-6. doi: 10.1111/j.1447-0594.2012.00878.x. Epub 2012 Jun 10.
Restriction of life-space is associated with physical performance and functional decline in older adults. Little is known about the factors associated with life-space in older adults with amnestic mild cognitive impairment (aMCI). The purpose of this study was to identify factors associated with life-space in older adults with aMCI.
The study participants were 69 older adults (mean age 74.5 years, males 56.5%) who were identified with aMCI. Life-space mobility was measured using a Japanese translation of the life-space assessment (LSA). Age, sex, cognitive function (general function, executive function and processing speed), physical performance, instrumental activities of daily living status (IADL) and fear of falling (FoF) were measured as potential relevant factors.
Univariate analysis showed that the LSA was associated with FoF, sex, physical performance, processing speed and IADL. In the stepwise regression analysis, FoF, processing speed and IADL maintained a significant association with the LSA scores, although sex and physical performance did not reach significance.
The results suggest that the restrictions of life-space in older adults with aMCI were more affected by the FoF, slower processing speed and restricted IADL than sex or physical performance.
生活空间的限制与老年人的身体机能和功能下降有关。对于有遗忘型轻度认知障碍（aMCI）的老年人，生活空间与哪些因素相关知之甚少。本研究旨在确定与 aMCI 老年人生活空间相关的因素。
研究对象为 69 名年龄在 74.5 岁（男性占 56.5%）的有 aMCI 的老年人。采用生活空间评估（LSA）的日语翻译版测量生活空间移动能力。测量了年龄、性别、认知功能（一般功能、执行功能和处理速度）、身体机能、工具性日常生活活动状态（IADL）和跌倒恐惧（FoF）等作为潜在相关因素。
单因素分析表明，LSA 与 FoF、性别、身体机能、处理速度和 IADL 相关。在逐步回归分析中，尽管性别和身体机能没有达到显著水平，但 FoF、处理速度和 IADL 与 LSA 评分仍保持显著相关性。
结果表明，与性别或身体机能相比，FoF、较慢的处理速度和受限的 IADL 对 aMCI 老年人生活空间的限制影响更大。
