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The effect of dietary oleic, linoleic, and linolenic acids on fat oxidation and energy expenditure in healthy men.
- Source :
-
Metabolism: clinical and experimental [Metabolism] 2008 Sep; Vol. 57 (9), pp. 1198-203. - Publication Year :
- 2008
-
Abstract
- Studies have shown that the long chain fatty acid composition of a dietary fat influences whether it will be partitioned for either energy or storage. The objective of this study was to compare the effects of 3 oils differing in fatty acid composition on postprandial energy expenditure and macronutrient oxidation in healthy normal-weight men. Using a randomized crossover design, 15 subjects consumed breakfast meals containing 60% of energy as fat. The principal source of fat was (a) olive oil rich in oleic acid (18:1n-9), (b) sunflower oil rich in linoleic acid (18:2n-6), or (c) flaxseed oil rich in linolenic acid (18:3n-3). Measurements of resting metabolic rate, thermic effect of food, and postprandial energy expenditure were conducted with indirect calorimetry that recorded O(2) consumed and CO(2) produced one-half hour before meal consumption and 6 hours after meal consumption. Fat and carbohydrate oxidation rates were calculated from nonprotein gaseous exchange. Olive oil feeding showed a significant overall increase in energy expenditure compared with flaxseed oil (P < .0006) and a trend to increased energy expenditure compared with sunflower oil (P < .06). None of the 3 treatments exhibited significant effects on fat or carbohydrate oxidation. In conclusion, diets rich in oleic acid derived from olive oil may offer increased oxidation translating into increased energy expenditure postprandially.
- Subjects :
- Adult
Cross-Over Studies
Humans
Linseed Oil pharmacology
Male
Olive Oil
Oxidation-Reduction drug effects
Plant Oils pharmacology
Postprandial Period
Reference Values
Single-Blind Method
Sunflower Oil
Dietary Fats, Unsaturated pharmacology
Energy Metabolism drug effects
Fats metabolism
Linoleic Acid pharmacology
Linolenic Acids pharmacology
Oleic Acid pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1532-8600
- Volume :
- 57
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Metabolism: clinical and experimental
- Publication Type :
- Academic Journal
- Accession number :
- 18702944
- Full Text :
- https://doi.org/10.1016/j.metabol.2008.04.012