A Dietary Guideline Adherence Score Is Positively Associated with Dietary Biomarkers but Not Lipid Profile in Healthy Children  

Oleh:

Golley, Rebecca K. ; McNaughton, Sarah A. ; Hendrie, Gilly A.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: JN: The Journal of Nutrition vol. 145 no. 01 (Jan. 2015), page 128-133.
Topik: child; validity; diet quality; dietary biomarker; cardiovascular risk factor; disease

Ketersediaan

Perpustakaan FK Nomor Panggil: J42.K Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Background: Whether dietary indexes are associated with biomarkers of children’s dietary intake is unclear. Objective: The study aim was to examine the relations between diet quality and selected plasma biomarkers of dietary intake and serum lipid profile. Methods: The study sample consisted of 130 children aged 4–13 y (mean ± SD: 8.6 ± 2.9 y) derived by using baseline data from an intervention study. The Dietary Guideline Index for Children and Adolescents (DGI-CA) comprises the following 11 components with age-specific criteria: 5 core food groups, whole-grain bread, reduced-fat dairy foods, discretionary foods (nutrient poor; high in saturated fat, salt, and added sugar), healthy fats/oils, water, and diet variety (possible score of 100). A higher score reflects greater compliance with dietary guidelines. Venous blood was collected for measurements of serum lipids, fatty acid composition, plasma carotenoids, lutein, lycopene, and a-tocopherol. Linear regression was used to examine the relation between DGI-CA score (independent variable) and concentrations of biomarkers by using the log-transformed variable (outcome), controlling for confounders. Results: DGI-CA score was positively associated (P < 0.05) with plasma concentrations of lutein (standardized ß = 0.17), a-carotene (standardized ß = 0.28), ß-carotene (standardized ß = 0.26), and n–3 (?-3) fatty acids (standardized ß = 0.51) and inversely associated with plasma concentrations of lycopene (standardized ß = -0.23) and stearic acid (18:0) (standardized ß = -0.22). No association was observed between diet quality and a-tocopherol, n–6 fatty acids, or serum lipid profile (all P > 0.05). Conclusion: Diet quality, conceptualized as adherence to national dietary guidelines, is cross-sectionally associated with plasma biomarkers of dietary exposure but not serum lipid profile.

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