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Nutrición Hospitalaria

On-line version ISSN 1699-5198Print version ISSN 0212-1611

Nutr. Hosp. vol.31 n.1 Madrid Jan. 2015

https://dx.doi.org/10.3305/nh.2015.31.1.7578 

ORIGINAL / Síndrome metabólico

 

Addition of dietary fiber sources to shakes reduces postprandial glycemia and alters food intake

La adición de fuentes de fibra dietética a batidos reduce la glucemia posprandial y altera la ingesta de alimentos

 

 

Flávia Galvão Cândido1, Winder Tadeu Silva Ton1 and Rita de Cássia Gonçalves Alfenas1

1Departamento de Nutrição e Saúde. Universidade Federal de Viçosa. Brasil.

 

 


ABSTRACT

Introduction: Obesity and Type 2 diabetes may be controlled by foods capable of modulating food intake and blood glucose.
Objectives: We investigated whether the addition of food sources of fiber or phaseolamin to shakes can control food intake and reduce postprandial glycemia. Methods: This was a randomized, single blind, crossover design study (food intake: n=22; glycemia: n=10). Five liquid meals presenting similar amounts of macronutrients (C - control shake, OB - oat bran shake, F - flaxseed shake, WB - white bean extract shake, and UB - unripe banana flour shake) were consumed in five non-consecutive days. Participants kept dietary records during the subsequent 24 hours. Blood glucose was measured at 0 (immediately before), 15, 30, 45, 60, 90 and 120 minutes after the ingestion of each shake and the incremental areas under the curves (iAUC) were calculated.
Results: Compared to C, there was a significant increase in fiber intake after the consumption of OB (+17.9g), F (+19.1g), and UB (+12.6g), and in fat after the consumption of OB (+25,4g). There was a non-significant reduction of daily energy intake in F compared to C (1524kJ; P=0.10). There was a 43% reduction in the iAUC (P=0.03) in response to UB consumption.
Conclusions: Unripe banana flour reduced postprandial glycemic response of shakes almost by half. The effect of oat bran and flaxseed on food intake needs further investigation in long-term studie.

Key words: Blood Glucose. Dietary Fiber. Energy Intake. α-Amylase.


RESUMEN

Introducción: Obesidad y diabetes de tipo 2 pueden ser controlados por alimentos capaces de modular la ingesta de alimentos y la glucemia.
Objetivos: Se investigó si la adición de alimentos fuentes de fibra o fasolamina a batidos puede controlar la ingesta de alimentos y reducir la glucemia posprandial.
Métodos: Estudio aleatorizado, simple ciego, de diseño cruzado (ingesta de alimentos:n=22; glucemia:n=10). Cinco batidos con cantidades similares de macronutrientes (C - control batido, SA - salvado de avena batido, L - linaza batido, FB - extracto de frijol blanco batido y PI - harina de plátano no maduro batido) fueron consumidos en cinco días no consecutivos. Las participantes registraron la ingesta de alimentos en las 24 horas subsiguientes. La glucosa en sangre se midió a 0 (inmediatamente antes), 15, 30, 45, 60, 90 y 120 minutos después de la ingestión de cada batido y se calcularon las áreas incrementales bajo las curvas (AIBC).
Resultados: En comparación a C, hubo un aumento significativo en la ingesta de fibra después de que el consumo de SA(+17,9g), SL(+19,1g), y PI(+12,6g), y en la grasa después del consumo de SA(+25,4g). Se encontró una reducción no significativa de la ingesta diaria de energía en L (1524kJ, P=0,10) en comparación con C. Hubo una reducción del 43% en el AIBC (P=0,03) en respuesta al consumo PI.
Conclusiones: Harina de plátano no maduro reduce la respuesta glucémica posprandial de batidos casi a la mitad. El efecto de salvado de avena y linaza en la ingesta de alimentos requiere mayor investigación en estudios a largo plazo.

Palabras clave: Glucemia. Fibra Dietetica. Ingestion de Energia. α-Amilase.


 

 

http://scielo.isciii.es/pdf/nh/v31n1/31originalsindromemetabolico04.pdf

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