Declines in Physical Performance by Sex and Age Among Nondisabled Community-Dwelling Older Japanese During a 6-Year Period

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概要

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• Background: Few studies have examined whether declines over time in hand-grip strength (HGS) and fast walking speed (FWS) differ by sex and age among non-Western community-dwelling older adults. This study aimed to quantify changes in HGS and FWS over the 6-year period from 1994 to 2000 and examine whether these changes differed by sex and baseline age among older individuals in a Japanese community.Methods: We conducted a community-based prospective cohort study. The participants were 513 nondisabled men and women aged 67 to 91 years at the 1994 survey. Independent variables regarding time since baseline, in addition to various time-dependent and time-independent covariates, were obtained in 1994, 1996, 1998, and 2000. The outcome variables were HGS and FWS assessed at each survey. All data on independent and dependent variables that were collected at each survey were simultaneously analyzed using a linear mixed-effects model.Results: The linear mixed-effects model revealed significant declines in both HGS (−0.70 kg/year, P < 0.001) and FWS (−0.027 m/sec/year, P < 0.001) among nondisabled older participants who had analyzable data in any survey during the 6-year period. Sex was significantly associated with the rate of decline in HGS (P < 0.001), but not FWS (P = 0.211).Conclusions: In this analysis of nondisabled older Japanese, a mixed-effects model confirmed a significant effect of aging on declines in HGS and FWS and showed that men had a significantly steeper decline in HGS than did women during a 6-year period.

• 2011-05-01

著者

• Ishizaki Tatsuro

  Kyoto University School of Public Health

• Furuna Taketo

  Sapporo Medical University

• Yoshida Yuko

  Tokyo Metropolitan Institute of Gerontology

• Iwasa Hajime

  University of Tokyo Graduate School of Medicine

• Shimada Hiroyuki

  National Institute for Longevity Sciences

• Yoshida Hideyo

  Tokyo Metropolitan Institute of Gerontology

• Kumagai Shu

  University of Human Arts and Sciences

• Suzuki Takao

  National Institute for Longevity Sciences

• YOSHIDA Hideo

  Tokyo Metropolitan Institute of Gerontology and Geriatric Hospital

• Yoshida Yuko

  Tokyo Metropolitan Agricultural Experimental Station

• Yoshida Yuko

  Research Team For Promoting Independence Of The Elderly Tokyo Metropolitan Institute Of Gerontology

• Furuna Taketo

  School Of Health Sciences Sapporo Medical University

• Shimada Hiroyuki

  Section For Health Promotion Department Of Health And Medical Care Center For Development Of Advance

• Shimada Hiroyuki

  Section For Health Promotion Department Of Health And Medical Care Center For Development Of Advance

• Suzuki Takao

  National Center For Geriatrics And Gerontology

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