Exercise attenuates oral intake of amphetamine in rats

• Published in: Pharmacology, biochemistry and behavior Vol. 51; no. 4; pp. 725 - 729
• Main Authors: Kanarek, Robin B., Marks-Kaufman, Robin, D'Anci, Kristen E., Przypek, Jeanne
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 01.08.1995; Elsevier Science
• Subjects: Administration, Oral; Amphetamine; Amphetamine - administration & dosage; Amphetamine - pharmacology; Animals; Biological and medical sciences; Body weight gain; Diet; Drinking - drug effects; Drug addictions; Eating - drug effects; Exercise; Food intake; Male; Medical sciences; Motor Activity - drug effects; Physical Exertion - physiology; Rats; Rats, Sprague-Dawley; Running wheels; Self Administration; Toxicology; Weight Gain - drug effects; Amphetamine; Exercise; Food intake; Body weight gain; Running wheels; Amphetamine derivatives; Consumption; Physical exercise; Rat; CNS stimulant; Psychotropic; Rodentia; Oral administration; Self administration; Vertebrata; Mammalia; Animal; Reinforcement; Drug of abuse
• ISSN: 0091-3057; 1873-5177
• DOI: 10.1016/0091-3057(95)00022-O

The effects of wheel running on oral intake of amphetamine were examined in six male Sprague-Dawley rats given a 0.075-mg/ml amphetamine sulfate solution as their sole source of liquid, six rats given a 0.15-mg/ml amphetamine solution, and four rats given water as their sole source of liquid. All animals were housed in Wahmann running wheels and adjoining cages, and had ad lib access to ground Purina Chow. For the first 7 days of the experiment, the doors to the running wheels were closed; the wheels were then opened for 6 days. This cycle was repeated a second time. Animals drinking the 0.15-mg/ml amphetamine solution consumed significantly less food and gained less weight than animals in the other two groups. Although there was no difference in food intake between rats drinking water and rats drinking the 0.075-mg/ml amphetamine solution, rats in the water group gained significantly more weight than rats in the 0.075-mg/ml amphetamine group. With respect to drug intake, rats consumed significantly less amphetamine when running in the wheels than when access to the wheels was prohibited. Access to running wheels did not alter water intake. These latter results suggest that drug intake can be reduced by the provision of an alternate behavior.