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    Junilla Larsen

    Modeling of palatable food intake in female young adults: Effects of perceived body size Aims: To examine whether normal-weight young women model the food intake of another woman and to what extent this modeling effect is moderated by the... more
    Modeling of palatable food intake in female young adults: Effects of perceived body size Aims: To examine whether normal-weight young women model the food intake of another woman and to what extent this modeling effect is moderated by the weight-status of the other person. Design and participants: An experimental design with a three (confederate’s M&M intake: high, low, none) by two (confederate's weight status: slim, normal weight) factorial design. A total of 102 normal-weight women aged 18 to 30 were exposed to a same-sex confederate and were observed in a living-room setting. Measurements: Food intake was observed during a 15-min break between two tasks. Findings: A significant interaction effect was found between the intake and weight manipulation of the confederate, showing that the modeling effect was only found in the normal-weight appearance condition. Conclusion: Normal-weight young women are more inclined to imitate the food intake of a female confederate when they ar...
    Research Interests:
    The purpose of this study was to examine the association between adolescents' body mass index (BMI) z-scores and their subsequent level of schooling, extending previous longitudinal research by using objectively measured weight and... more
    The purpose of this study was to examine the association between adolescents' body mass index (BMI) z-scores and their subsequent level of schooling, extending previous longitudinal research by using objectively measured weight and height data. A longitudinal study with 3 study waves (1-year intervals) involving 1248 Dutch adolescents (49% girls; mean age = 13.7 years) at schools providing different educational levels was used to determine adolescents who moved and did not move to a lower educational level in the first year, or in the second year, and to examine whether this movement could be predicted by BMI z-scores (zBMI), after controlling for a large range of potential confounding factors. A total of 1164 Dutch adolescents continued in the same level of education, whereas 84 adolescents moved to a lower educational level (43 moved in the first and 41 in the second year). A higher zBMI significantly increased the risk of a general transition to a lower educational level, and...
    The current study sought to find indications for the appropriateness of a model in which eating patterns and exercise beliefs influence binge eating and physical exercise, respectively, that, in turn, influence outcome after gastric... more
    The current study sought to find indications for the appropriateness of a model in which eating patterns and exercise beliefs influence binge eating and physical exercise, respectively, that, in turn, influence outcome after gastric banding for severe obesity. Participants were 157 patients (144 females, 13 males) who completed questionnaires approximately 34 months (range = 8-68 months) after laparoscopic adjustable gastric banding (LAGB). Our data showed a well-fitting model in which external and emotional eating were associated with outcome through binge eating. Several exercise beliefs were associated with physical exercise, but physical exercise was not associated with weight loss or physical health. Binge eating was related more strongly to the outcome after gastric banding than physical exercise. Future research should examine whether a strong focus on the management of binge eating and external and emotional eating could improve the outcome of morbidly obese patients with unsuccessful weight outcome after obesity surgery.
    The outcome of restrictive types of bariatric operation might be affected by cognitions (beliefs) about one's capability to regulate eating behavior. Our aim was to... more
    The outcome of restrictive types of bariatric operation might be affected by cognitions (beliefs) about one's capability to regulate eating behavior. Our aim was to examine the association between weight loss and self-regulation cognitions before and after laparoscopic adjustable gastric banding for morbid obesity or severe obesity with serious comorbidity. Six months before and 1 year after the operation, the Obesity Cognition Questionnaire and an eating behavior self-efficacy scale were completed by 77 patients: 68 women, 9 men, mean age 43 years (range, 27-62 y), mean preoperative body mass index 47 kg/m(2) (range, 36-63 kg/m(2)). Pearson correlations were calculated and t tests and effect size calculations were used to examine preoperative to postoperative changes of self-regulation cognitions. The mean body mass index 1 year after the operation was 38 kg/m(2) (range, 25-55 kg/m(2)). Self-regulation cognitions did not predict weight outcome, but the self-regulation cognitions time-line (ie, the attitude about the prognosis of one's overweight, P < .001), psychologic consequences (P = .002), and self-efficacy (P < .001) changed in a positive way 1 year after the operation. Intake screening of self-regulation cognitions is of little use for prediction of short-term weight outcome after bariatric operation. It is suggested that beliefs about one's capability to control eating behavior change after the operation.
    ... E-mailadres:r.hermans@pwo.ru.nl Roel CJ Hermans, Junilla K. Larsen en Rutger CME Engels Zien eten doet eten: een experi-... Proefpersonen werden gewogen en gemeten zonder schoenen. Als proefpersonen een jas of vest droegen werd hen... more
    ... E-mailadres:r.hermans@pwo.ru.nl Roel CJ Hermans, Junilla K. Larsen en Rutger CME Engels Zien eten doet eten: een experi-... Proefpersonen werden gewogen en gemeten zonder schoenen. Als proefpersonen een jas of vest droegen werd hen gevraagd deze uit te trekken. ...
    A low quality of life has been regarded a cue to action. Some patients with unsuccessful weight loss after laparoscopic adjustable gastric banding (LAGB) undergo a conversion of gastric banding to gastric by-pass. This study examines... more
    A low quality of life has been regarded a cue to action. Some patients with unsuccessful weight loss after laparoscopic adjustable gastric banding (LAGB) undergo a conversion of gastric banding to gastric by-pass. This study examines whether patients who did or did not undergo conversion to gastric bypass differed in quality of life before and after gastric banding. Of 34 patients with unsuccessful weight loss after gastric banding (excess body mass index loss < 25%), 14 had a conversion to gastric bypass 2 years or more after gastric banding. All patients completed the RAND-36 quality of life questionnaire before gastric banding. After gastric banding, 24 patients (70.6%) filled out the RAND-36 at 6, 12, and 24 months. Pre-banding and postbanding mental quality of life was lower in the conversion compared to the non-conversion group. Our results suggest that a relatively stable lower mental quality of life is a signal for further intervention. The bariatric team and patients should be aware that mental health may play a role in the decision for conversion to gastric bypass. The possible mechanisms underlying this finding, and limitations of the study are discussed.

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