期刊
ARCHIVES OF GERONTOLOGY AND GERIATRICS
卷 96, 期 -, 页码 -出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.archger.2021.104440
关键词
Gait speed; Grip strength; Timescale; Mortality; Survival
资金
- National Heart, Lung, and Blood Institute (NHLBI) [HHSN268201200036C, HHSN268200800007C, HHSN268201800001C, N01HC55222, N01HC85079, N01HC85080, N01HC85081, N01HC85082, N01HC85083, N01HC85086, U01HL080295, U01HL130114]
- National Institute of Neurological Disorders and Stroke (NINDS
- National Institute on Aging (NIA) [R01AG023629]
- Institute of Aging of the Canadian Institutes of Health Research (CIHR)
- Research Institute of the McGill University Health Centre, the McGill University Faculty of Medicine, the CIHR Neuroinflammation Training Program
- CIHR operating grant awarded to Christina Wolfson [TO1-120301]
- Fonds de recherche du Quebec Sante
This study investigated the association between time-varying measures of physical function and survival in men and women aged 70 years and older. The findings showed that higher gait speed was associated with increased survival in women, but there was no significant effect of gait speed on survival in men, or grip strength on survival in women or men.
Purpose of the study: Variation in physical function in older adults over time raises several methodological challenges in the study of its association with survival, many of which have largely been overlooked in previous studies. The objective of this study is to examine the relationship between time-varying measures of physical function and survival in men and women aged 70 years and over, while accounting for the time-varying effects of health and lifestyle characteristics. Methods: 1,846 women and 1,245 men in the Cardiovascular Health Study followed annually for up to 10 years beginning at age 70-74 years were included. We estimated the effect of gait speed and grip strength on survival over the subsequent year, using age as the timescale. Results: A 0.1m/s higher gait speed was associated with a 12% decrease in the likelihood of death in the subsequent year among women (HR 0.88, 95% CI 0.82-0.94). There was no statistically significant effect of gait speed on survival among men (HR 0.97, 95% CI 0.91 to 1.03), or of grip strength on survival among women (HR 0.97, 95% CI 0.95-1.00) or men (HR 0.99, 95% CI 0.97-1.01), over one year. Conclusions: Upon using time-varying measures of physical function while accounting for time-varying effects of health and lifestyle characteristics, higher gait speed was associated with increased survival among the women in our study. We found no evidence of an association between gait speed and one-year survival in men, or between grip strength and one-year survival in women or men.
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