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Winter Cholecalciferol Supplementation at 55°N Has No Effect on Markers of Cardiometabolic Risk in Healthy Children Aged 4–8 Years

Hauger, Hanne, Mølgaard, Christian, Mortensen, Charlotte, Ritz, Christian, Frøkiær, Hanne, Smith, Taryn J, Hart, Kath, Lanham-New, Susan and Damsgaard, Camilla T (2018) Winter Cholecalciferol Supplementation at 55°N Has No Effect on Markers of Cardiometabolic Risk in Healthy Children Aged 4–8 Years The Journal of Nutrition, 148 (8). pp. 1261-1268.

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Abstract

Background: Low serum 25-hydroxyvitamin D [25(OH)D] has been associated with unfavorable cardiometabolic risk profiles in many observational studies in children, but very few randomized controlled trials have investigated this. Objective: We explored the effect of winter-time cholecalciferol (vitamin D3) supplementation on cardiometabolic risk markers in young, white, 4- to 8-y-old healthy Danish children (55°N) as part of the pan-European ODIN project. Methods: In the ODIN Junior double-blind, placebo-controlled, dose-response trial, 119 children (mean ± SD age: 6.7 ± 1.5 y; 36% male; 82% normal weight) were randomly allocated to 0, 10 or 20 μg/d of vitamin D3 for 20 wk (October–March). Cardiometabolic risk markers including BMI-for-age z score (BMIz), waist circumference, systolic and diastolic blood pressure, serum triglycerides and cholesterol (total, LDL, HDL, and total:HDL), plasma glucose and insulin, and whole-blood glycated hemoglobin were measured at baseline and endpoint as secondary outcomes together with serum 25(OH)D. Intervention effects were evaluated in linear regression models as between-group differences at endpoint adjusted for baseline value of the outcome, and additionally for age, sex, baseline serum 25(OH)D, BMIz, time since breakfast, and breakfast content. Results: Mean ± SD serum 25(OH)D was 56.7 ± 12.3 nmol/L at baseline and differed between groups at endpoint with concentrations of 31.1 ± 7.5, 61.8 ± 10.6, and 75.8 ± 11.5 nmol/L in the 0-, 10-, and 20 μg/d groups, respectively (P < 0.0001). Vitamin D3 supplementation had no effect on any of the cardiometabolic risk markers in analyses adjusted for baseline value of the outcome (all P ≥ 0.05), and additional covariate adjustment did not change the results notably. Conclusions: Preventing the winter decline in serum 25(OH)D with daily vitamin D3 supplementation of 10 or 20 μg had no cardiometabolic effects in healthy 4- to 8-y-old Danish children. This trial was registered at www.clinicaltrials.gov as NCT02145195.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Biosciences and Medicine
Authors :
NameEmailORCID
Hauger, Hanne
Mølgaard, Christian
Mortensen, Charlotte
Ritz, Christian
Frøkiær, Hanne
Smith, Taryn J
Hart, KathK.Hart@surrey.ac.uk
Lanham-New, SusanS.Lanham-New@surrey.ac.uk
Damsgaard, Camilla T
Date : 15 June 2018
DOI : 10.1093/jn/nxy080
Copyright Disclaimer : © 2018 American Society for Nutrition. All rights reserved.
Uncontrolled Keywords : randomized controlled trial, vitamin D, cardiovascular risk factors, children, ODIN
Depositing User : Melanie Hughes
Date Deposited : 24 Aug 2018 14:21
Last Modified : 17 Jun 2019 10:20
URI: http://epubs.surrey.ac.uk/id/eprint/849100

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