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• W2043800096 abstract "Physical activity decreases cocaine self-administration in laboratory animals and is associated with positive outcomes in substance abuse treatment programs; however, less is known about its efficacy in preventing the establishment of regular patterns of substance use in drug-naive individuals. The purpose of the present study was to examine the effects of access to a running wheel on the acquisition of cocaine self-administration in experimentally naive rats. Male, Long–Evans rats were obtained at weaning and assigned to sedentary (no wheel) or exercising (access to wheel) conditions immediately upon arrival. After six weeks, rats were surgically implanted with intravenous catheters and placed in operant conditioning chambers for 2 h/day for 15 consecutive days. Each session began with a noncontingent priming infusion of cocaine, followed by a free-operant period in which each response on the active lever produced an infusion of cocaine on a fixed ratio (FR1) schedule of reinforcement. For days 1–5, responding was reinforced with 0.25 mg/kg/infusion cocaine; for days 6–15, responding was reinforced with 0.75 mg/kg/infusion cocaine. In addition, all rats were calorically restricted during days 11–15 to 85% to 95% of their free-feeding body weight. Compared to sedentary rats, exercising rats acquired cocaine self-administration at a significantly slower rate and emitted significantly fewer active lever presses during the 15 days of behavioral testing. These data indicate that access to a running wheel inhibits the acquisition of cocaine self-administration, and that physical activity may be an effective intervention in substance abuse prevention programs." @default.
• W2043800096 created "2016-06-24" @default.
• W2043800096 creator A5043853511 @default.
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• W2043800096 date "2011-12-01" @default.
• W2043800096 modified "2023-09-23" @default.
• W2043800096 title "Access to a running wheel inhibits the acquisition of cocaine self-administration" @default.
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• W2043800096 doi "https://doi.org/10.1016/j.pbb.2011.08.025" @default.
• W2043800096 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3199311" @default.
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