Effect on 24-h energy expenditure of a moderate-fat diet high in monounsaturated fatty acids compared with that of a low-fat, carbohydrate-rich diet: a 6-mo controlled dietary intervention trial
| Autor: | Pia K Mortensen, Lone G. Rasmussen, Anette Pia Due, Arne Astrup, Thomas Larsen |
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| Rok vydání: | 2007 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Diet Reducing Diet therapy Medicine (miscellaneous) Overweight Fatty Acids Monounsaturated Animal science Risk Factors Internal medicine Dietary Carbohydrates medicine Humans Obesity Nutrition and Dietetics Chemistry Calorimetry Indirect Thermogenesis Carbohydrate medicine.disease Dietary Fats Endocrinology Adipose Tissue Energy expenditure Body Composition Female Basal Metabolism medicine.symptom Energy Metabolism Oxidation-Reduction Body mass index Weight gain |
| Zdroj: | The American Journal of Clinical Nutrition. 85:1014-1022 |
| ISSN: | 0002-9165 |
| DOI: | 10.1093/ajcn/85.4.1014 |
| Popis: | Background: Dietary fat has a lower thermogenic effect than does carbohydrate. A moderate-fat diet, high in monounsaturated fatty acids (MUFA diet), may decrease energy expenditure (EE) and thereby induce weight gain. Objective: We aimed to compare changes in 24-h EE and substrate oxidation after a 6-mo controlled dietary intervention with either a MUFA or a low-fat (LF) diet. Design: Twenty-seven overweight [body mass index (in kg/m 2 ): 28.1 ± 0.4] nondiabetic subjects aged 18-36 y followed an 8-wk low-calorie diet and a 2-wk weight-stabilizing diet and then were randomly assigned to a MUFA (n = 12) or LF (n = 15) diet for 6 mo. Substrate oxidation and 24-h EE were measured by whole-body indirect calorimetry. The first measurement (0 mo) was taken during the weight-stabilizing diet, and the second measurement was taken after the 6-mo intervention. Results: A tendency was seen toward a lower 24-h EE with the MUFA than with the LF diet (P = 0.0675), but this trend did not remain after adjustment for the initial loses of fat mass and fat-free mass (P = 0.2963). Meal-induced thermogenesis was significantly (P < 0.05) lower with the MUFA than with the LF diet, but no time X treatment interaction was found. A significant (P = 0.0456) treatment X time interaction was found for spontaneous physical activity. Conclusion: Despite a slightly lower meal-induced thermogenesis, the MUFA diet had an effect on 24-h EE that was not significantly different from that of the LF diet after a 6-mo controlled dietary intervention. |
| Databáze: | OpenAIRE |
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