title: Dietary calcium intake is inversely associated with blood pressure in Brazilian children.
abstract: This study aimed to evaluate the dietary calcium intake and its association with blood pressure in childhood. It is a cross-sectional study with a sample of 347 Brazilian children aged 8 and 9 years. We evaluated calcium intake through three dietary records. Blood pressure was measured following the recommendations of the Brazilian Society of Cardiology. The intake of calcium was below recommendations for almost all children (96.3%). There was statistically significant difference in the means of systolic (p = .041) and diastolic (p = .047) blood pressure in the tertiles of calcium intake. After adjustment of regression model, each tertile of calcium intake showed that the systolic and diastolic blood pressure was reduced in 1.53 (95% confidence interval: -2.84 to -0.21) and 1.83 mmHg (95% confidence interval: -3.49 to -0.19), respectively. Our results showed an inverse association between dietary calcium intake and blood pressure in childhood.
authors.affiliation: a Postgraduate Program in Epidemiology, Department of Social Medicine , Federal University of Pelotas , Pelotas , Rio Grande do Sul , Brazil.
authors.forename: Elma Izze da Silva
authors.initials: EI
authors.lastname: Magalhães
authors.affiliation: b Department of Nutrition, School of Nursing , Federal University of Minas Gerais , Belo Horizonte , Minas Gerais , Brazil.
authors.forename: Milene Cristine
authors.initials: MC
authors.lastname: Pessoa
authors.affiliation: c Postgraduate Program in Nutrition Science, Department of Nutrition and Health , Federal University of Viçosa , Viçosa , Minas Gerais , Brazil.
authors.forename: Sylvia do Carmo Castro
authors.initials: SD
authors.lastname: Franceschini
authors.affiliation: c Postgraduate Program in Nutrition Science, Department of Nutrition and Health , Federal University of Viçosa , Viçosa , Minas Gerais , Brazil.
authors.forename: Juliana Farias
authors.initials: JF
authors.lastname: Novaes
mesh_terms: D015415:Biomarkers / Q000097:blood; D001794:Blood Pressure / Q000187:drug effects*; D015992:Body Mass Index; D001938:Brazil; D002136:Calcium, Dietary / Q000008:administration & dosage*; D002648:Child; D003430:Cross-Sectional Studies; D015930:Diet Records; D005260:Female; D006801:Humans; D006973:Hypertension / Q000097:blood / Q000453:epidemiology*; D016014:Linear Models; D008297:Male; D015999:Multivariate Analysis; D015995:Prevalence; D064167:Recommended Dietary Allowances; D057185:Sedentary Behavior; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D055105:Waist Circumference
chemical_list: D015415:Biomarkers; D002136:Calcium, Dietary
keywords: Calcium; blood pressure; children; dietary intake