Evidence in female rhesus monkeys (Macaca mulatta) that nighttime caloric intake is not associated with weight gain.
Obes Res
; 13(12): 2072-80, 2005 Dec.
Article
en En
| MEDLINE
| ID: mdl-16421340
OBJECTIVE: To evaluate the hypothesis that nighttime consumption of calories leads to an increased propensity to gain weight. RESEARCH METHODS AND PROCEDURES: Sixteen female rhesus monkeys (Macaca mulatta) were ovariectomized and placed on a high-fat diet to promote weight gain, and we examined whether monkeys that ate a high percentage of calories at night were more likely to gain weight than monkeys that ate the majority of calories during the day. RESULTS: Within 6 weeks post-ovariectomy, calorie intake and body weight increased significantly (129 +/- 14%, p = 0.04; 103 +/- 0.91%, p = 0.02, respectively). Subsequent placement on high-fat diet led to further significant increases in calorie intake and body weight (368 +/- 56%, p = 0.001; 113 +/- 4.0%, p = 0.03, respectively). However, there was no correlation between the increase in calorie intake and weight gain (p = 0.34). Considerable individual variation existed in the percentage of calories consumed at night (6% to 64% total daily caloric intake). However, the percentage of calorie intake occurring at night was not correlated with body weight (r = 0.04; p = 0.87) or weight gain (r = 0.07; p = 0.79) over the course of the study. Additionally, monkeys that showed the greatest nighttime calorie intake did not gain more weight (p = 0.94) than monkeys that showed the least nighttime calorie intake. DISCUSSION: These results show that eating at night is not associated with an increased propensity to gain weight, suggesting that individuals trying to lose weight should not rely on decreasing evening calorie intake as a primary strategy for promoting weight loss.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ingestión de Energía
/
Aumento de Peso
/
Ritmo Circadiano
/
Ingestión de Alimentos
/
Conducta Alimentaria
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Animals
Idioma:
En
Revista:
Obes Res
Asunto de la revista:
CIENCIAS DA NUTRICAO
/
FISIOLOGIA
/
METABOLISMO
Año:
2005
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos