Potassium urinary excretion and dietary intake: a cross-sectional analysis in 8-10 year-old children.

Auteur(s) :
Moreira P., Graça P., Breda J., Padrão P., Oliveira AC., Moreira A., Pinto M., Neto M., Santos T., Madureira J., de Oliveira Fernandes E.
Date :
Mai, 2015
Source(s) :
BMC pediatrics. #15:1 p60
Adresse :
Faculty of Nutrition and Food Sciences, University of Porto, R. Dr. Roberto Frias, Porto, 4200-465, Portugal. catarinaoliveirav@gmail.com.

Sommaire de l'article

Data from studies assessing the intake of potassium, and the concomitant sodium-to-potassium ratio are limited. The aim of this study was to evaluate potassium and sodium-to-potassium ratio intake in 8-10 year-old children.

A cross-sectional survey was carried out from January to June 2014 and data from 163 children (81 boys) were included. Potassium intake was estimated by 24-h urine collection and coefficient of creatinine was used to validate completeness of urine collections. Urinary sodium and sodium-to-potassium ratio were also analysed. A 24-h dietary recall was used to provide information on dietary sources of potassium. Height and weight were measured according to international standards.

The mean urinary potassium excretion was 1701 ± 594 mg/day in boys, and 1682 ± 541 mg/day in girls (p = 0.835); 8.0% of children met the WHO recommendations for potassium intake. The mean sodium excretion was 2935 ± 1075 mg/day in boys and 2381 ± 1045 mg/day in girls (p <0.001) and urinary sodium-to-potassium ratio was 3.2 ± 1.4 in boys, and 2.5 ± 1.1 in girls (p = 0.002). The mean fruit and vegetable intake was 353.1 ± 232.5 g/day in boys, and 290.8 ± 213.1 g/day in girls (p = 0.101).

This study reported a low compliance of potassium intake recommendations in 8-10 year-old children. Health promotion interventions are needed in order to broaden public awareness of potassium inadequacy and to increase potassium intake.

Source : Pubmed