American Journal of Clinical Nutrition, Vol 53, 1134-1137, Copyright © 1991 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Nutritional determinants of the increase in energy intake associated with a high-fat diet

A Tremblay, N Lavallee, N Almeras, L Allard, JP Despres and C Bouchard
Physical Activity Sciences Laboratory, Laval University, Ste-Foy, Quebec, Canada.

Two studies were performed to evaluate the short-term effect of a high- fat diet on spontaneous energy intake and the respective contribution of diet composition and energy density of food. Ingestion of high-fat foods was associated with a significant increase in energy intake in the two studies (P less than 0.05). In study 1 this increase was accompanied by a reduction in total weight of food consumed when compared with values obtained under low-fat-diet conditions. Moreover, the occurrence of satiety coincided with a level of carbohydrate intake corresponding to the expected daily carbohydrate oxidation when high- fat foods contained a moderate amount of carbohydrates. In study 2, where the carbohydrate content of high-fat foods was unusually low (less than or equal to 25% of their energy content), carbohydrate intake was lower than usual carbohydrate oxidation. Under the conditions of this study, energy density of foods seemed to play a significant role on the occurrence of satiety.

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