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Appetite. 1997 Dec;29(3):291-304.

A satiety quotient: a formulation to assess the satiating effect of food.

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Department of Psychology, University of Leeds, U.K.


This paper introduces a satiety quotient (SQ) to assess the satiating effect of an eating episode. This procedure constitutes an improvement on previous measures by considering the satiating effects of the eating episode over time. A satiety quotient was calculated from data obtained from several studies involving the presentation of a preload/meal to young lean male and female subjects. Subjects were presented with preloads/meals of varying composition, and motivation to eat immediately prior to, and periodically following, the eating episode were measured. Food and fluids were not consumed whilst motivation to eat was measured in the post preload/meal period. The SQ was calculated by dividing the difference between ratings of motivation to eat before and after the eating episode (pre minus post) by the weight or energy content of intake during the episode. This quotient relates intake to the rate of return of motivation to eat in the post-ingestive period, a relationship which is not apparent on separate examination of the amount consumed or ratings of motivation to eat. Development of this satiety quotient is a further contribution to the evolution of the concept of quantifying satiating effects of foods, and provides additional information on the effects of food attributes on short-term appetite control.

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