Dietary salt intake assessed by 24 h urinary sodium excretion in Australian schoolchildren aged 5-13 years

作者：Grimes Carley A; Riddell Lynn J; Campbell Karen J; Nowson Caryl A^*

来源：Public Health Nutrition, 2013, 16(10): 1789-1795.

DOI：10.1017/S1368980012003679

• Sodium chloride
• Dietary
• Sodium
• Dietary
• Child
• Australia

Objective: To measure total daily salt intake using 24 h urinary Na excretion within a sample of Victorian schoolchildren aged 5-13 years and to assess discretionary salt use habits of children and parents. %26lt;br%26gt;Design: Cross-sectional study. %26lt;br%26gt;Setting: Completed within a convenience sample of independent primary schools (n 9) located in Victoria, Australia. %26lt;br%26gt;Subjects: Two hundred and sixty children completed a 24 h urine collection over a school (34%) or non-school day (66%). Samples deemed incomplete (n 18), an over-collection (n 1) or that were incorrectly processed at the laboratory (n 3) were excluded. %26lt;br%26gt;Results: The sample comprised 120 boys and 118 girls with a mean age of 9.8 (SD 1.7) years. The average 24 h urinary Na excretion (n 238) was 103 (SD 43) mmol/24 h (salt equivalent 6.0 (SD 2.5) g/d). Daily Na excretion did not differ by sex; boys 105 (SD 46) mmol/24 h (salt equivalent 6.1 (SD 2.7) g/d) and girls 100 (SD 41) mmol/24 h (salt equivalent 5.9 (SD 2.4) g/d; P = 0.38). Sixty-nine per cent of children (n 164) exceeded the recommended daily Upper Limit for Na. Reported discretionary salt use was common: two-thirds of parents reported adding salt during cooking and almost half of children reported adding salt at the table. %26lt;br%26gt;Conclusions: The majority of children had salt intakes exceeding the recommended daily Upper Limit. Strategies to lower salt intake in children are urgently required, and should include product reformulation of lower-sodium food products combined with interventions targeting discretionary salt use within the home.

• 出版日期2013-10
• 单位迪肯大学