ACTIVITY-BASED ANOREXIA IN RATS AS FAILURE TO ADAPT TO A FEEDING SCHEDULE

Progressive weight loss resulting from restriction to a daily 1.5-hr f eeding period and access to a running wheel, the Activity-Eased Anorex ia (ABA) effect, was obtained in 3 experiments. However, bodyweight re covered when adaptation to the feeding schedule preceded access to the wheel (Experiment 1), when feeding was at the start of the dark perio d (Experiments 2 and 3), and when wheel access was denied in the 4 hr before food (Experiment 4). It was concluded that ABA results from int erference with adaptation to a new feeding schedule due to the develop ment of anticipatory behavior.