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Hypovitaminosis D and nocturnal hypertension in obese children: an interesting link

Journal of Human Hypertension volume 28, pages 360–366 (2014)Cite this article

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Abstract

In adults, low levels of vitamin D are associated with hypertension. The aim of this study was to evaluate the relationship between 24-h blood pressure (BP) patterns and vitamin D levels in obese children. We recorded anthropometric parameters, took blood samples for 25-hydroxivitamin D measurements and monitored ambulatory BP (ABP) in 32 obese children (male/female: 21/11, age 7–16 years). Subjects in the lower tertiles had higher homeostasis model assessment of insulin resistance, nighttime systolic and diastolic ABP, nighttime systolic and diastolic ABP load, 24-h ABP index and nighttime systolic and diastolic ABP index than those in the higher tertile. Vitamin D correlated negatively with 24-h and nighttime systolic ABP, 24-h systolic ABP load, nighttime systolic and diastolic ABP load, 24-h systolic ABP index and nighttime systolic ABP index. The percentage of subjects with pathological 24-h systolic BP (SBP) load, nighttime SBP load, nighttime diastolic BP (DBP) load, nighttime SBP index and nighttime DBP index increased progressively as the vitamin deficiency categories increased (χ2=10.26, P<0.05; χ2=16.34, P<0.01; χ2=10.23, P<0.05; χ2=10.38 and χ2=10.06, P <0.01). Low levels of vitamin D in obese children were associated with a higher BP burden, especially at night.

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Authors and Affiliations

  1. Department of Life and Reproduction Sciences, Section of Pediatrics, University of Verona, Verona, Italy

    C Banzato, C Maffeis, E Maines, P Cavarzere, R Gaudino, A Boner & F Antoniazzi

  2. Department of Medicine, University of Verona, Verona, Italy

    C Fava & P Minuz

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  1. C Banzato
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Correspondence to C Banzato.

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Banzato, C., Maffeis, C., Maines, E. et al. Hypovitaminosis D and nocturnal hypertension in obese children: an interesting link. J Hum Hypertens 28, 360–366 (2014). https://doi.org/10.1038/jhh.2013.122

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  • DOI: https://doi.org/10.1038/jhh.2013.122

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