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Nutrición Hospitalaria

versão On-line ISSN 1699-5198versão impressa ISSN 0212-1611


IZAOLA, Olatz et al. Effects of a snack enriched with carob and Undaria pinnatifida (wakame) on metabolic parameters in a double blind, randomized clinical trial in obese patients. Nutr. Hosp. [online]. 2020, vol.37, n.3, pp.465-473.  Epub 30-Nov-2020. ISSN 1699-5198.


the composition of snack foods likely influences the overall effect that snacking has on metabolism and obesity. The objective of the current study was to assess the responses to two different snacks, one of them supplemented with wakame and carobs, on cardiovascular risk factors, satiety, and subsequent food intake in obese subjects with metabolic syndrome.

Material and methods:

forty patients were randomized in a clinical trial (NCT03420989, to group I (enriched snack, n = 16) or group II (control snack, n = 16). At baseline and after 8 weeks biochemical parameters, dietary intakes, and nutritional status were assessed. The subjects also rated their feelings of satiety/hunger with a test meal.


no differences were detected in anthropometric parameters between both snacks. Changes in other parameters were detected in patients with enriched snacks, with a significant decrease in LDL-cholesterol by 7.4 % (intervention snack, -8.9 ± 2.3 mg/dL vs control snack, -0.9 ± 3.3 mg/dL; p = 0.03), in total cholesterol by 5.8 % (intervention snack, -10.4 ± 2.9 mg/dL vs control snack, -1.4 ± 3.2 mg/dL; p = 0.02), and in resistin level by 15.9 % (intervention snack, -1.0 ± 0.2 mg/dL vs control snack, -0.1 ± 0.3 mg/dL: p = 0.03). After the test meal, satiety scores (after 20 min and 40 min) were higher than fasting levels in both groups. The same results were obtained with the 100-mm, 5-point visual satiety scale.


our study indicates that a wakame- and carob-enriched snack induces a significant decrease in total cholesterol, LDL-cholesterol, and resistin levels when compared to a control snack, without effects on food consumption, other cardiovascular parameters, or anthropometric parameters.

Palavras-chave : Snacks; Undaria pinnatifida; Carob; Metabolic parameters; Obesity.

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