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KMID : 1039620200100020123
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Korean Journal of Family Practice
2020 Volume.10 No. 2 p.123 ~ p.128
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Associations of Physical Activity and Sitting Time with Serum Vitamin D Status in Korean Adults: Results from the 2014 Korea National Health and Nutrition Examination Survey
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Choo Jee-Min
Nam Ga-Eun
Park Ji-Soon
Park Chan-Mi
Lee Sang-Jo
Lee Mi-Ji
Kim Joo-Yeon
Shin Jong-Hoon
Huh Youn
Kim Won-Sock
Kwon Yeong-Keun
Kim Yang-Hyun
Cho Kyung-Hwan
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Abstract
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Background: Recent evidence has reported the relationships between 25-hydroxyvitamin D (25[OH]D) insufficiency and chronic diseases. This study examined the association of physical activity and sitting time with vitamin D status.
Methods: This study analyzed the data of 1,598 adults aged ≥19 who participated in the 2014 Korea National Health and Nutrition Examination Survey. Vitamin D insufficiency was defined as a serum 25(OH)D level of ≤20 ng/mL. The odds ratios and 95% confidence intervals of vitamin D insufficiency according to physical activity and sitting time were calculated using a multivariable logistic regression analysis.
Results: The mean levels of serum 25(OH)D were 16.5 ng/mL in males and 15.2 ng/mL in females, respectively and was significantly higher in the participants with sitting times of <5 hours/day than those with sitting times of ≥5 hours/day. After adjusting for confounding variables, sitting time of <5 hours/day was associated with decreased odds of vitamin D insufficiency as compared with sitting time of ≥5 hours/day in the total participants and females. In addition, the odds ratio for vitamin D insufficiency was significantly lower in the group with sitting times of <5 hours/day than in the group with sitting times of ≥5 hours/day even among people with low physical activity in the total participants and females.
Conclusion: Serum 25(OH)D level was insufficient in the Korean adults and shorter sitting time was related to lower odds ratio of vitamin D insufficiency. Our findings suggest that sitting time is an independent factor of serum vitamin D status.
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KEYWORD
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25-Hydroxyvitamin D, Vitamin D, Physical Activity, Sitting Time, Korean
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