Document Detail


Acquisition of texture-cued fasting-anticipatory meal-size change in rats with adequate energy intake.
MedLine Citation:
PMID:  11606036     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To determine if an increase in intake at a meal before a long fast can be conditioned to food texture cues, male Sprague-Dawley rats were given a high- or low-fat diet in one texture (powder or pellet) for 1 h prior to a 12.5-h fast and in the other texture before a 3-h fast. Each group (N = 9) went through a pseudorandom sequence of four duplicates of each texture-fast pairing over 4 experimental days in each of three training trials, followed by one 4-day trial under extinction, i.e. without the difference in fast lengths between textures. Neither the high-fat group nor the low-fat group as a whole gave a clear indication of a learnt texture-cued increase in meal size before the longer fast relative to the shorter fast. However, the rats trained on the high-fat diet that had the highest intakes on the first 4 days of training showed a relative increase in the amount eaten of the texture predicting the longer fast during the third training trial, and this effect also approached statistical significance in the extinction test. These results provide some support for the conclusion that anticipatory hunger/satiety can be differentially conditioned to dietary texture cues, but only if sufficient food is eaten before a short fast to prevent the rise in hunger during longer fasts that reinforces the discriminative increase in meal size.
Authors:
J A White; E Mok; L Thibault; D A Booth
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Appetite     Volume:  37     ISSN:  0195-6663     ISO Abbreviation:  Appetite     Publication Date:  2001 Oct 
Date Detail:
Created Date:  2001-10-18     Completed Date:  2001-12-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8006808     Medline TA:  Appetite     Country:  England    
Other Details:
Languages:  eng     Pagination:  103-9     Citation Subset:  IM    
Copyright Information:
Copyright 2000 Academic Press.
Affiliation:
School of Dietetics and Human Nutrition, Macdonald Campus of McGill University, 21,111 Lakeshore Road, Ste. Anne de Bellevue, Montreal, Quebec, Canada H9X 3V9.
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MeSH Terms
Descriptor/Qualifier:
Animals
Dietary Fats
Discrimination (Psychology) / physiology*
Eating
Energy Intake / physiology*
Food Deprivation / physiology
Food Preferences / physiology*
Male
Random Allocation
Rats
Rats, Sprague-Dawley
Sensation
Time Factors
Chemical
Reg. No./Substance:
0/Dietary Fats

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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