Browsing by Subject "Bulimia nervosa"
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Item The effects of meal skipping on bulimic symptoms : a randomized experiment(2004-12-18) Groesz, Lisa Marie; Stice, Eric; Holahan, Charles J.Theories, including the dietary restraint model, posit that cognitive control over eating, rather than physical satiety cues, increases vulnerability to uncontrolled eating (Polivy & Herman, 1985). Prospective studies endorse this theory, finding that dieting increases risk for bulimic symptoms. Yet experiments suggest that dieting decreases bulimic symptoms. One possible explanation for the conflicting findings is that real world dieting involves less healthy weight control techniques than prescribed diets, such as meal skipping. The current study manipulated number of meals per day with young women (N=132), holding other dietary factors constant, to examine whether meal skipping resulted in greater increases in bulimic symptoms than a diet encouraging many small meals or a wait list condition. Participants in both 6-week dieting conditions lost more weight than controls, indicating that dieting was successfully manipulated. While the two dieting conditions displayed significant reductions in bulimic symptoms over time, there was no time-by-condition interaction. The two dieting conditions did display reductions in evaluative concerns compared to Wait List (WL). The two dieting conditions also had a decrease in disinhibition, hunger, and body dissatisfaction compared to the control. Results suggest neither form of dieting promote bulimic symptoms, and in fact reduce evaluative concerns.Item Evaluation of a healthy-weight treatment program for bulimia nervosa : a preliminary randomized trial(2006-08) Burton, Emily Weisner; Stice, Eric; Carlson, Caryn L.The role of dieting in the etiology and maintenance of bulimia nervosa remains unclear, and current treatments, which primarily aim to eliminate dieting behaviors, demonstrate limited efficacy. The purpose of this study was to conduct a randomized treatment trial to test whether healthy dieting maintains bulimic symptoms or effectively reduces this eating disturbance. Female participants (N=85) with full and subthreshold bulimia nervosa were randomly assigned to a 6-session healthy dieting intervention or waitlist condition and assessed through 3-month follow-up. Relative to control participants, intervention participants showed modest weight loss during treatment and demonstrated significant improvements in bulimic symptoms that persisted through follow-up. These preliminary results suggest that this intervention shows potential for the treatment for bulimia nervosa and may be worthy of future refinement and evaluation. Results also provide experimental evidence that dieting behaviors do not maintain bulimia nervosa, suggesting the need to reconsider maintenance models for this eating disorder.