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Open AccessArticle

Is Sleep Duration Associated with Biological Age (BA)?: Analysis of (2010–2015) South Korean NHANES Dataset South Korea

by 1,2,†, 1,† and 3,*
1
Research and Analysis Team, National Health Insurance Service Ilsan Hospital, Goyang 10444, Korea
2
Institute of Health Services Research, Yonsei University College of Medicine, Seoul 03722, Korea
3
Department of Health Administration and Management, Soonchunhyang University, Asan 31538, Korea
*
Author to whom correspondence should be addressed.
These authors contributed equally to the study.
Int. J. Environ. Res. Public Health 2018, 15(9), 2009; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph15092009
Received: 6 August 2018 / Revised: 7 September 2018 / Accepted: 12 September 2018 / Published: 14 September 2018
(This article belongs to the Special Issue Sleep Health)
(1) Background: South Korea ranked worst in sleep duration compared to other countries, but there are no clear healthcare programs to guarantee sufficient sleep. Studies are needed to suggest evidence and arouse public awareness of the negative effects of abnormal sleep duration. In this study, we investigated the relationship between biological age (BA) and sleep duration. (2) Methods: We used data from the Korea National Health and Nutrition Examination Surveys (KNHANES V-VI; 2010–2015, which is an annually cross-sectional study including 29,309 participants). We performed multiple linear regression to investigate the associations between sleep duration and differences in BA and chronological age (CA). (3) Results: A total of 14.22% of respondents had short sleep duration (less than 6 h per day) and 7.10% of respondents had long sleep duration (more than 8 h per day). People with long sleep duration had a positive correlation with difference between BA and CA (>8 h per day, β = 1.308, p-value = 0.0001; ref = 6~8 h per day, normal). Short sleep duration had an inverse trend with the difference, although the result was not statically significant. Associations were greater in vulnerable populations, such as low income, obese, or people with chronic diseases. (4) Conclusions: Excess sleep duration that is greater than the normal range was associated with increased BA. In particular, such relationships that are related to worsening BA were greater in patients with low income, obesity, and chronic diseases. Based on our findings, healthcare professionals should also consider the negative effects of excess sleep, not only insufficient sleep. Alternatives for controlling optimal sleep duration should be reviewed, especially with vulnerable populations. View Full-Text
Keywords: biological age; sleep duration; self-management; metabolism biological age; sleep duration; self-management; metabolism
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MDPI and ACS Style

Han, K.-T.; Kim, D.W.; Kim, S.J. Is Sleep Duration Associated with Biological Age (BA)?: Analysis of (2010–2015) South Korean NHANES Dataset South Korea. Int. J. Environ. Res. Public Health 2018, 15, 2009. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph15092009

AMA Style

Han K-T, Kim DW, Kim SJ. Is Sleep Duration Associated with Biological Age (BA)?: Analysis of (2010–2015) South Korean NHANES Dataset South Korea. International Journal of Environmental Research and Public Health. 2018; 15(9):2009. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph15092009

Chicago/Turabian Style

Han, Kyu-Tae; Kim, Dong W.; Kim, Sun J. 2018. "Is Sleep Duration Associated with Biological Age (BA)?: Analysis of (2010–2015) South Korean NHANES Dataset South Korea" Int. J. Environ. Res. Public Health 15, no. 9: 2009. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph15092009

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