The selection and prevalence of natural and fortified calcium food sources in the diets of adolescent girls.
J Nutr Educ Behav
; 43(2): 96-102, 2011.
Article
em En
| MEDLINE
| ID: mdl-21392712
ABSTRACT
OBJECTIVE:
To assess the impact of calcium-fortified food and dairy food on selected nutrient intakes in the diets of adolescent girls.DESIGN:
Randomized controlled trial, secondary analysis. SETTING ANDPARTICIPANTS:
Adolescent girls (n = 149) from a midwestern metropolitan area participated in randomized controlled trials of bone physiology from 1997 to 2008. INTERVENTION Subjects randomly assigned to a high-calcium (HC) diet supplying 1,500 mg calcium/d, or their usual diet (UC). MAIN OUTCOMEMEASURES:
Dietary intake was assessed from 3-day food records and calcium intakes categorized by food source. Food group composites, representing calcium-fortified and dairy food categories, were examined for their relative nutrient contributions. Student t tests were used to evaluate differences in selected nutrient intakes between the 2 study groups.RESULTS:
Dairy food contributed 68% of the total mean 1,494 mg calcium/d in the HC group, and calcium-fortified food contributed 304 mg calcium. In the UC group, dairy food contributed 69% of the total mean 765 mg calcium/d and calcium-fortified food contributed 50 mg calcium. Nutrient profiles of the dairy composites differed significantly from the calcium-fortified composites (P < .05). CONCLUSIONS AND IMPLICATIONS Dairy food was the primary source of calcium selected by these adolescent girls; calcium-fortified food augmented calcium intakes.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Osso e Ossos
/
Cálcio da Dieta
/
Alimentos Fortificados
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Fenômenos Fisiológicos da Nutrição do Adolescente
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Conservadores da Densidade Óssea
Tipo de estudo:
Clinical_trials
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Adolescent
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Child
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Female
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Humans
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article