Publications by authors named "Lisa M Groesz"
Background: Although bariatric surgery is an established treatment for obesity, less is known regarding the long-term effects of surgery on psychiatric function. This paper reports changes in psychiatric treatment status, weight, and weight-related comorbidities over 5 years of follow-up among a population of veterans completing bariatric surgery.
Methods: We assessed 55 veterans undergoing bariatric surgery at a single Veteran Affairs medical center for 5 years post-surgery.
Background: Psychosocial factors have been related to physical activity (PA) and are used to evaluate mediation in PA interventions.
Methods: Brief theory-based psychosocial scales were compiled from existing measures and evaluated. Study 1 assessed factor structure and construct validity with self-reported PA and accelerometry in overweight/obese men (N = 441) and women (N = 401).
Non-human animal studies demonstrate relationships between stress and selective intake of palatable food. In humans, exposure to laboratory stressors and self-reported stress are associated with greater food intake. Large studies have yet to examine chronic stress exposure and eating behavior.
View Article and Find Full Text PDFBackground: Although pre-surgical psychological evaluations are commonly administered to patients considered for weight loss surgeries, the value of these evaluations for predicting weight loss success has been questioned. In this study, we addressed this issue by examining patient's total number of psychiatric indicators rather than individual psychological factors as predictors of weight loss/weight regain.
Methods: Sixty adult veterans completed gastric bypass surgery or laparoscopic gastric banding after completing a multidisciplinary evaluation for surgical clearance, including a psychological assessment.
Recent experimental evidence that dietary restriction results in decreased bulimic and depressive symptoms seems inconsistent with findings from prospective studies and etiologic theory. However, because the dieting manipulated in these experiments may be unrepresentative of real-world weight loss dieting, the authors tested whether successful dietary restriction was associated with decreases in these outcomes by using longitudinal data from a school-based study of 496 adolescent girls. Moderately overweight participants who evidenced successful dietary restriction showed significantly greater decreases in bulimic symptoms than weight-matched participants who did not show successful dietary restriction; however, there were no effects for depressive symptoms.
View Article and Find Full Text PDFProspective studies suggest dieting increases bulimic symptoms, but experiments suggest that dieting decreases bulimic symptoms. One possible explanation for the conflicting findings is that real world dieting involves less healthy dieting techniques, such as meal skipping, than prescribed diets. We tested whether the manipulation of eating episode frequency during dieting impacted bulimic symptoms.
View Article and Find Full Text PDFObjective: The effect of experimental manipulations of the thin beauty ideal, as portrayed in the mass media, on female body image was evaluated using meta-analysis.
Method: Data from 25 studies (43 effect sizes) were used to examine the main effect of mass media images of the slender ideal, as well as the moderating effects of pre-existing body image problems, the age of the participants, the number of stimulus presentations, and the type of research design.
Results: Body image was significantly more negative after viewing thin media images than after viewing images of either average size models, plus size models, or inanimate objects.