Factors associated with life-space in older adults with amnestic mild cognitive impairment.
OBJECTIVE
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.


METHODS
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.


RESULTS
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.


CONCLUSIONS
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.
Section for Health Promotion, Department of Health and Medical Care, National Center for Geriatrics and Gerontology, Obu, Japan. kazuki.uemura@gmail.com
Kazuki
K
Uemura
Hiroyuki
H
Shimada
Hyuma
H
Makizako
Daisuke
D
Yoshida
Takehiko
T
Doi
Minoru
M
Yamada
Takao
T
Suzuki
D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D000647:Amnesia / Q000503:physiopathology* / Q000523:psychology; D060825:Cognitive Dysfunction / Q000503:physiopathology* / Q000523:psychology; D056344:Executive Function; D005260:Female; D015577:Geriatric Assessment; D006801:Humans; D007564:Japan; D008297:Male; D009483:Neuropsychological Tests; D012044:Regression Analysis; D012307:Risk Factors