Please use this identifier to cite or link to this item: https://doi.org/10.3390/nu9040340
Title: Plasma Vitamin D Deficiency Is Associated With Poor Sleep Quality and Night-Time Eating at Mid-Pregnancy in Singapore
Authors: Cheng, Tuckseng
Loy, See Ling 
Cheung, Yin Bun 
Cai, Shirong 
Colega, Marjorelee T.
Godfrey, Keith M.
Chong, Yap Seng 
Tan, Kokhian
Shek, Pei Chi Lynette 
Lee, Yung Seng 
Lek, Ngee 
Chan, Kok Yen Jerry 
MARY CHONG FOONG FONG 
FABIAN YAP KOK PENG 
Keywords: vitamin D
behavioral circadian rhythms
sleep quality
predominantly night-time eating
Issue Date: Apr-2017
Publisher: MDPI
Citation: Cheng, Tuckseng, Loy, See Ling, Cheung, Yin Bun, Cai, Shirong, Colega, Marjorelee T., Godfrey, Keith M., Chong, Yap Seng, Tan, Kokhian, Shek, Pei Chi Lynette, Lee, Yung Seng, Lek, Ngee, Chan, Kok Yen Jerry, MARY CHONG FOONG FONG, FABIAN YAP KOK PENG (2017-04). Plasma Vitamin D Deficiency Is Associated With Poor Sleep Quality and Night-Time Eating at Mid-Pregnancy in Singapore. Nutrients 9 (4) : article number 340. ScholarBank@NUS Repository. https://doi.org/10.3390/nu9040340
Abstract: Plasma 25-hydroxyvitamin D (25OHD) deficiency, poor sleep quality, and night-time eating, have been independently associated with adverse pregnancy outcomes, but their interrelationships are yet to be evaluated. We aimed to investigate the associations between maternal plasma 25OHD status and sleep quality and circadian eating patterns during pregnancy. Data on pregnant women (n = 890) from a prospective cohort (Growing Up in Singapore Towards healthy Outcomes) were analyzed. Plasma 25OHD concentration was measured, while the Pittsburgh sleep quality index (PSQI) and 24-h dietary recall were administered to women at 26–28 weeks’ gestation. Plasma 25OHD status was defined as sufficient (>75 nmol/L), insufficient (50–75 nmol/L), or deficient (<50 nmol/L). Poor sleep quality was defined by a total global PSQI score >5. Predominantly day-time (pDT) and predominantly night-time (pNT) were defined according to consumption of greater proportion of calories (i.e., >50%) from 07:00–18:59 and from 19:00–06:59, respectively. After adjustment for confounders, women with plasma 25OHD deficiency had higher odds of poor sleep quality (odds ratio (OR) 3.49; 95% confidence interval (CI) 1.84–6.63) and pNT eating (OR: 1.85; 95% CI 1.00–3.41) than those who were 25OHD sufficient. Our findings show the association of maternal plasma 25OHD deficiency with poor sleep quality and pNT eating at mid-pregnancy. © 2017 by the authors. Licensee MDPI, Basel, Switzerland.
Source Title: Nutrients
URI: http://scholarbank.nus.edu.sg/handle/10635/136888
ISSN: 20726643
DOI: 10.3390/nu9040340
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