Conditioned taste avoidance induced by forced and voluntary wheel running in rats.

Full Abstract

Voluntary exercise by rats running in a freely rotating wheel (free wheel) produces conditioned taste avoidance (CTA) of a flavored solution consumed before running [e.g., Lett, B.T., Grant, V.L., 1996. Wheel running induces conditioned taste aversion in rats trained while hungry and thirsty. Physiol. Behav. 59, 699-702]. Forced exercise, swimming or running, also produces CTA in rats [e.g., Masaki, T., Nakajima, S., 2006. Taste aversion induced by forced swimming, voluntary running, forced running, and lithium chloride injection treatments. Physiol. Behav. 88, 411-416]. Energy expenditure may be the critical factor in producing such CTA. If so, forced running in a motorized running wheel should produce CTA equivalent to that produced by a similar amount of voluntary running. In two experiments, we compared forced running in a motorized wheel with voluntary running in a free wheel. Mean distance run over 30 min was equated as closely as possible in the two apparatuses. Both types of exercise produced CTA relative to sedentary, locked-wheel controls. However, voluntary running produced greater CTA than forced running. We consider differences between running in the free and motorized wheels that may account for the differences in strength of CTA.

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Author information

Author/s: Forristall, J R (JR); Hookey, B L (BL); Grant, V L (VL);

Affiliation: Memorial University of Newfoundland, St. John's, NL, Canada A1B 3X9.

Journal and publication information

Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't

Journal: Behavioural processes (Behav Processes), published in Netherlands. (Language: eng)

Reference: 2007-Mar; vol 74 (issue 3) : pp 326-33

Dates: Created 2007/02/26; Completed 2007/05/03;

PMID: 17229530, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Animals
Avoidance Learning - physiology
Choice Behavior - physiology
Conditioning, Classical - physiology
Energy Metabolism - physiology

Male
Physical Conditioning, Animal - physiology; psychology
Rats
Rats, Sprague-Dawley
Taste - physiology

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