Cognitive Functioning and Walking Speed in Older Adults as Predictors of Limitations in Self-Reported Instrumental Activity of Daily Living: Prospective Findings from the Obu Study of Health Promotion for the Elderly

Hyuma Makizako, Hiroyuki Shimada, Takehiko Doi, Kota Tsutsumimoto, Sangyoon Lee, Ryo Hotta, Sho Nakakubo, Kazuhiro Harada, Sungchul Lee, Seongryu Bae, Kenji Harada and Takao Suzuki
Additional contact information
Hyuma Makizako: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Hiroyuki Shimada: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Takehiko Doi: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Kota Tsutsumimoto: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Sangyoon Lee: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Ryo Hotta: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Sho Nakakubo: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Kazuhiro Harada: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Sungchul Lee: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Seongryu Bae: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Kenji Harada: Department of Functioning Activation, Center for Gerontology and Social Science, National Centerfor Geriatrics and Gerontology, 7-430 Morioka-cho, Obu, Aichi 474-8511, Japan
Takao Suzuki: Research Institute, National Center for Geriatrics and Gerontology, 7-430 Morioka-cho, Obu,Aichi 474-8511, Japan

IJERPH, 2015, vol. 12, issue 3, 1-12

Abstract: Our aim was to determine whether baseline measures of cognitive functioning, walking speed, and depressive status are independent predictors of limitations in instrumental activities of daily living (IADL) in older adults. The cross-sectional study involved 1329 community-dwelling adults, aged 75 years or older. At baseline, the Mini-Mental State Examination (MMSE), Symbol Digit Substitution Test (SDST), Geriatric Depressive Scale (GDS), and a word list memory task were completed, and self-reported IADLs and walking speed were recorded. The longitudinal study involved 948 participants without baseline IADL limitation, which was assessed at baseline and 15-month follow up, using the three Kihon Checklist subitems. In cross-sectional analyses, participants with IADL limitation demonstrated greater GDS scores, slower walking speeds, and lower MMSE, word list memory task, and SDST (only for women) scores relative to those without IADL limitation. In the longitudinal analyses, baseline walking speed (men: OR 0.98; women: OR 0.97, p < 0.05) and word list memory task scores (men: OR 0.84; women: OR 0.83, p < 0.05) in both sexes and SDST scores in women (OR 0.96, p = 0.04) were independent predictors of subsequent IADL limitation. Walking speed, memory, and processing speed may be independent predictors of IADL limitation in older adults.

Keywords: instrumental activities of daily living; memory; processing speed; walking speed (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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