The Association of Sleep Habits and Advancing Age in Japanese Older Adults: Results from the National Center for Geriatrics and Gerontology Study of Geriatric Syndromes

Gerontology ◽  
2021 ◽  
pp. 1-5
Author(s):  
Sho Nakakubo ◽  
Takehiko Doi ◽  
Kota Tsutsumimoto ◽  
Satoshi Kurita ◽  
Hideaki Ishii ◽  
...  

<b><i>Background:</i></b> The association of sleep habits with “advancing age among older adults” is not fully understood. <b><i>Objectives:</i></b> The purpose of the present study was to examine the association of sleep habits with advancing age among community-dwelling older adults in Japan. <b><i>Methods:</i></b> A total of 18,005 older people (mean age: 73.2 ± 6.0 years; 8,070 men and 9,935 women) from the National Center for Geriatrics and Gerontology Study of Geriatric Syndromes were analyzed. Participants were asked in face-to-face interviews about the times they usually go to bed, fall asleep, wake-up, and get up. The amount of time spent in bed and self-reported sleep duration were then calculated from the differences between these times. As other parameters, the subjects were also asked about sleep latency, time spent in bed after waking up, number of nocturnal awakenings, and duration of napping in a typical day. <b><i>Results:</i></b> The results of the Jonckheere-Terpstra test showed that all sleep parameters shifted to an earlier time (going to bed, falling asleep, waking up, and getting out of bed), longer duration (sleep duration, time spent in bed, sleep latency, time spent in bed after waking up, and napping), or more nocturnal awakenings with advancing age (all <i>p</i> &#x3c; 0.01). Among the men, the time of waking up was not significantly associated with age, while among the women, the time of getting up was not significantly associated with age. <b><i>Conclusion:</i></b> These results from a large cohort show the age-related trends of sleep habits in community-dwelling older adults in Japan. Our results revealed that a longer duration and earlier timing of sleep are associated with advancing age.

2018 ◽  
Vol 22 (9) ◽  
pp. 1066-1071 ◽  
Author(s):  
Sho Nakakubo ◽  
H. Makizako ◽  
T. Doi ◽  
K. Tsutsumimoto ◽  
R. Hotta ◽  
...  

2020 ◽  
Author(s):  
Jihye Lim ◽  
Hyungchul Park ◽  
Heayon Lee ◽  
Eunju Lee ◽  
Danbi Lee ◽  
...  

Abstract BackgroundOral health is essential for daily living and plays a pivotal role in overall health conditions and well-being. This study evaluated the impact of self-reported oral health on geriatric conditions, institutionalization, and mortality. MethodsThis study analyzed the population of the Aging Study of Pyeongchang Rural Area that had undergone geriatric assessments between 2016 and 2017. The oral health status of the participants was determined using three items from the General Oral Health Assessment Index, and the participants were classified into three groups according to the total sum of the scores as good (3), fair (4–7), or poor (8-15). The outcomes were the incidence of geriatric syndromes at 2 years and the composite outcome of mortality and institutionalization.ResultsAmong the 1189 participants, 44.1% were women, and the mean age of the study population was 75.0 years. Good, fair, and poor oral health were observed in 597 (50.2%), 406 (34.1%), and 186 (15.6%) individuals, respectively. Worsening oral health status was associated with the incidences of various geriatric syndromes at follow-up, and these associations were attenuated after adjusting for baseline demographic and geriatric parameters. Similarly, the significant association between baseline oral health status and the incidence of the composite outcome was attenuated after adjusting for demographic and geriatric parameters. ConclusionsOral health affected the geriatric health conditions in this prospective, longitudinal cohort of community-dwelling older adults. The correlations and interactions of oral health status with other functional parameters may deserve consideration as a geriatric domain.


2021 ◽  
Author(s):  
Sho Nakakubo ◽  
Takehiko Doi ◽  
Kota Tsutsumimoto ◽  
Satoshi Kurita ◽  
Hideaki Ishii ◽  
...  

Abstract Background Good sleep durations and physical activity are essential factor for maintaining good health. This study examined whether sleep duration and physical inactivity were associated with incident disability among community-dwelling older adults. Methods A total of 4,372 adults aged ≥ 70 years participated in a baseline assessment. We also assessed self-reported sleep duration and physical activity using the International Physical Activity Questionnaire – Short Form at baseline assessment. We measured monthly incident disability, defined as the onset of being certified for personal support or care as required by Japanese public long-term care insurance over 5 years. The Cox proportional hazard regression analysis estimated hazard ratios (HRs) and 95% confidence intervals (CIs) for incident disability according to long sleep duration (≥ 9 h) and physical inactivity. Results Long sleep duration (HR 1.32, CI 95% 1.05–1.67) and physical inactivity (HR 1.33, CI 95% 1.13–1.57) were associated with incident disability in multivariate analyses. These results were also sustained in the model where both long sleep duration and physical inactivity were simultaneously submitted as independent variables. Furthermore, coexistence of long sleep duration and physical inactivity had higher risk of incident disability than each factor individually (HR 1.69, CI 95% 1.11–2.58), even though the synergistic interaction was mildly effective. Conclusions This study revealed that long sleep duration and physical inactivity were independently associated with the risk of incident disability among older adults. More attention should be paid to both sleep duration and physical activity in order to prevent incident disability.


Sign in / Sign up

Export Citation Format

Share Document