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Nutrición Hospitalaria

versión On-line ISSN 1699-5198versión impresa ISSN 0212-1611

Resumen

CALLEJA FERNANDEZ, A.; VIDAL CASARIEGO, A.; CANO RODRIGUEZ, I.  y  BALLESTEROS POMAR, M.ª D.. One-year effectiveness of two hypocaloric diets with different protein/carbohydrate ratios in weight loss and insulin resistance. Nutr. Hosp. [online]. 2012, vol.27, n.6, pp.2093-2101. ISSN 1699-5198.  https://dx.doi.org/10.3305/nh.2012.27.6.6133.

Background: The maintenance of weight loss may be influenced by the distribution of macronutrients in the diet and insulin sensitivity. Objective: The objective of the study was to evaluate the longterm effect of two hypocaloric diets with different protein/carbohydrate ratios in overweight and obese individuals either with insulin resistance (IR) or without insulin resistance (IS). Design: Prospective, randomized, clinical intervention study. Forty patients were classified as IR/IS after a 75 g oral glucose tolerance test and then randomized to a diet with either 40% carbohydrate/30% protein/30% fat (diet A) or 55% carbohydrate/15% protein/30% fat (diet B). Results: After one year of follow-up there was no difference in weight loss between diets A and B in each group, but the IS group maintained weight loss better than the IR group [-5.7 (3.9) vs. -0.6 (4.1); P = 0.04]. No differences were found in either Homeostasis Model Assessment (HOMA) or other metabolic glucose parameters except lower insulin at 120 minutes with diet A [21.40 (8.30) vs. 71.40 (17.11); P = 0.02]. Conclusions: The hypocaloric diets with different protein/carbohydrate ratios produced similar changes in weight. Insulin resistance may play a negative role in maintaining weight loss.

Palabras clave : Insulin resistance; Carbohydrates; Proteins; Diet.

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