2001
Relationships between walking hours, sleeping hours, meaningfulness of life (Ikigai) and mortality in the elderly: Prospective cohort study
Japanese Journal of Hygiene
- Volume
- 56
- Number
- 2
- First page
- 535
- Last page
- 540
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1265/jjh.56.535
- Publisher
- Japanese Society for Hygiene
The purpose of this study was to determine lifestyle factors in the elderly that affected longevity, using a population-based prospective study. The participants were 440 men and 625 women aged 60 to 74 living in a rural Japanese community. The baseline data such as age, sex, present illness, walking hours per day, sleeping hours per day, alcohol consumption, a history of smoking, and "ikigai" (meaningfulness of life) were collected in July 1990. During 90 months of follow-up from July 1990 to December 31 1997, there were 123 deaths. By Cox's multivariate hazard model adjusted age, sex, and medical histories, walking ≧hour/day (HR=0.63,95%CI 0.44-0.91) and an "ikigai" (HR=0.66, 95%CI 0.44-0.99) lowered the risk for all-cause mortality independently. In regard to hours of sleep, the cumulative survival curve showed that 7 hours/day was the border and sleeping ≧7 hours/day lowered the risk (HR=0.49 95%CI 0.33-0.74). Based on the findings in this study, walking ≧1hour/day, sleeping ≧7 hours/day, and "ikigai" are important factors for longevity in the elderly.
- Link information
- ID information
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- DOI : 10.1265/jjh.56.535
- ISSN : 0021-5082
- Pubmed ID : 11519188
- SCOPUS ID : 0035407422