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Eating in the absence of hunger in adolescents: intake after a large-array meal compared with that after a standardized meal
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DOI：10.3945/ajcn.2010.29812.png)
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Abstract
En 中文
Background: Eating in the absence of hunger (EAH) is typically assessed by measuring youths' intake of palatable snack foods after a standard meal designed to reduce hunger. Because energy intake required to reach satiety varies among individuals, a standard meal may not ensure the absence of hunger among participants of all weight strata. Objective: The objective of this study was to compare adolescents' EAH observed after access to a very large food array with EAH observed after a standardized meal. Design: Seventy-eight adolescents participated in a randomized crossover study during which EAH was measured as intake of palatable snacks after ad libitum access to a very large array of lunch-type foods (>10,000 kcal) and after a lunch meal standardized to provide 50% of the daily estimated energy requirements. Results: The adolescents consumed more energy and reported less hunger after the large-array meal than after the standardized meal (P values < 0.001). They consumed approximate to 70 kcal less EAH after the large-array meal than after the standardized meal (295 +/- 18 compared with 365 +/- 20 kcal; P < 0.001), but EAH intakes after the large-array meal and after the standardized meal were positively correlated (P values < 0.001). The body mass index z score and overweight were positively associated with EAH in both paradigms after age, sex, race, pubertal stage, and meal intake were controlled for (P values <= 0.05). Conclusion: EAH is observable and positively related to body weight regardless of whether youth eat in the absence of hunger from a very large-array meal or from a standardized meal. This trial was registered at clinicaltrials.gov as NCT00631644. Am J Clin Nutr 2010;92:697-703.
Keywords:
SENSORY-SPECIFIC SATIETY
ENERGY-INTAKE
HISPANIC CHILDREN
AFRICAN-AMERICAN
PUBERTAL CHANGES
PORTION SIZE
FOOD
OVERWEIGHT
BEHAVIOR
GIRLS
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