Marie-Pierre Gagnon-Girouard

Personality traits in overweight and obese women: Associations with BMI and eating behaviors

This study aimed at assessing the extent to which personality traits are related to BMI and eating behaviors in overweight and obese women (N=154; mean body mass index (BMI) of 30.5+/-3.0 kg/m(2)). The NEO Five-Factor Inventory was used to capture the five dimensions of personality (neuroticism, extraversion, openness to experience, agreeableness and conscientiousness). Anthropometric measurements (weight, height and BMI) were performed and eating behaviors (cognitive dietary restraint, disinhibition and susceptibility to hunger) were measured by the Three-Factor Eating Questionnaire. Regressional analyses showed that only conscientiousness was positively related to BMI. A higher level of neuroticism was identified as a significant predictor of higher scores for cognitive dietary restraint, disinhibition and susceptibility to hunger. Conscientiousness was also found to be a positive determinant of cognitive dietary restraint and a higher level of agreeableness predicted a lower score of susceptibility to hunger. Results also underline the presence of other psychological factors, i.e. dysphoria and body esteem, involved in the associations between personality traits and some eating behaviours. These findings suggest that particular dimensions of personality may contribute, either directly or through their association with other psychological factors, to a better understanding of weight and eating behaviors in overweight and obese women.

Psychological Impact of a “Health-at-Every-Size” Intervention on Weight-Preoccupied Overweight/Obese Women

The aim of the present study was to assess the impact of a “Health-at-every-size” (HAES) intervention on psychological variables and body weight the weight-preoccupied overweight/obese women. Those women were randomized into three groups (1) HAES, (2) social support (SS), (3) waiting-list (WL), and were tested at baseline, post-treatment and six-month and one-year follow-ups. All participants presented significant psychological improvement no matter if they received the HAES intervention or not. However, even if during the intervention, the three groups showed improvements, during the follow up, the HAES group continued to improve while the other groups did not, even sometimes experiencing some deterioration. Furthermore, in the HAES group only, participants weight maintenance 12 months after the intervention was related to their psychological improvement (quality of life, body dissatisfaction, and binge eating) during the intervention. Thus, even if, in the short-term, our study did not show distinctive effects of the HAES intervention compared to SS and WL on all variables, in the long-term, HAES group seemed to present a different trajectory as psychological variables and body weight are maintained or continue to improve, which was not the case in other groups. These differential long-term effects still need to be documented and further empirically demonstrated.

Can we apply the dual-pathway model of overeating to a population of weight-preoccupied overweight women?

OBJECTIVE The aim of the study is to verify the applicability of the dual-pathway model among weight-preoccupied overweight women and to document the restraint pathway, the negative affect pathway, and the possibility of a direct pathway from body dissatisfaction to overeating. METHOD Structural equations were performed to test the model on baseline data of 153 weight-preoccupied overweight women recruited to participate in a randomized trial. RESULTS Findings suggest that the model obtains satisfactory fit. Although the restraint pathway is partially supported, the negative affect pathway is confirmed. A third pathway linking directly body dissatisfaction to overeating is also evidenced. DISCUSSION The dual-pathway model of overeating seems to be representative of the reality of weight-preoccupied overweight women, which could be pointed as a population in need of clinical attention, particularly considering the dramatically increasing rates of obesity.

Trajectories of Eating and Clinical Symptoms Over the Course of a Day Hospital Program for Eating Disorders

Although it is well-established that day hospital programs for eating disorders significantly reduce clinical symptoms, the pre-test/post-test designs that were previously used do not provide information regarding the trajectory of symptoms during treatment. This study observed, on a weekly basis, the evolution of symptoms of 61 women suffering from eating disorders engaged in a day hospital program, and compared the trajectories of specific subgroups of patients. Results show that (a) the first half of the program was crucial for symptom changes; (b) although completers and non-completers presented similar initial improvement, their trajectories rapidly differentiated; and (c) poorer respondents initially reported more symptoms, showed a slower improvement, and never reached the non-clinical zone, whereas better-respondents reached the non-clinical cut-off point more rapidly.

Associations between eating patterns, dietary intakes and eating behaviors in premenopausal overweight women ☆

The regulation of energy intake is complex and many biological, psychosocial and environmental influences have been identified. To our knowledge, no study has yet investigated how eating patterns could mediate associations between eating behaviors and self-reported energy intake in premenopausal overweight women. Therefore, objectives of this study were to examine associations between eating behaviors and eating patterns in premenopausal overweight women and to test if eating patterns could mediate the associations between eating behaviors and self-reported energy intake. Women completed a 3-day food record and the Three-Factor Eating Questionnaire was used to assess eating behaviors (dietary restraint, disinhibition, hunger). In the total sample of women, flexible restraint was negatively (r=-0.18; p=0.03) and binge eating severity was positively (r=0.24; p=0.004) associated with self-reported energy intake. Moreover, flexible restraint was positively associated with the proportion of energy intake at breakfast (r=0.24; p=0.004), whereas disinhibition and binge eating severity were positively associated with the proportion of energy intake from snacks consumed after 5:00 pm (r=0.22, p=0.007 and r=0.22, p=0.01, respectively). In addition, mediational analyses showed that proportion of energy intake from snacks consumed after 5:00 pm explained 24.1% of the association between binge eating severity and self-reported energy intake. In conclusion, these results suggest that eating patterns are important factors to consider in order to explain the associations between eating behaviors and self-reported energy intake.

Examining women's perceptions of their mother's and romantic partner's interpersonal styles for a better understanding of their eating regulation and intuitive eating.

Intuitive eating is a positive approach to weight and eating management characterized by a strong reliance on internal physiological hunger and satiety cues rather than emotional and external cues (e.g., Tylka, 2006). Using a Self-Determination Theory framework (Deci & Ryan, 1985), the main purpose of this research was to examine the role played by both the mother and the romantic partner in predicting womens intuitive eating. Participants were 272 women (mean age: 29.9 years) currently involved in a heterosexual romantic relationship. Mothers and romantic partners were both found to have a role to play in predicting womens intuitive eating via their influence on womens motivation for regulating eating behaviors. Specifically, both the mothers and partners controlling styles were found to predict womens controlled eating regulation, which was negatively related to their intuitive eating. In addition, autonomy support from the partner (but not from the mother) was found to positively predict intuitive eating, and this relationship was mediated by womens more autonomous regulation toward eating. These results were uncovered while controlling for womens body mass index, which is likely to affect womens eating attitudes and behaviors. Overall, these results attest to the importance of considering womens social environment (i.e., mother and romantic partner) for a better understanding of their eating regulation and ability to eat intuitively.

Subtyping weight-preoccupied overweight/obese women along restraint and negative affect☆

Previous clustering analysis performed among samples of bulimic or binge eating women have consistently yielded two subtypes (Dietary and Dietary-Depressive). The present study verifies whether this clustering solution could be replicated among weight-preoccupied overweight/obese women and compares the different clusters on personality-, eating- and weight-related variables. Cluster analysis was performed along dietary restraint and negative affect among a sample of 156 overweight/obese weight-preoccupied women. Results failed to replicate the original two-cluster solution, rather evidencing a three-cluster solution (Dietary, Depressive, Low-Dietary/Low-Depressive). Also, dietary restraint did not appear to be a core feature for all weight-preoccupied overweight/obese women as it is for eating-disordered women since only one group presented dietary restraint. The presence of a pure Depressive group and a pure Dietary group showed that dietary restraint and negative affect may act independently among our sample. In term of clinical severity, the Dietary group, even in the absence of high negative affect, occupied an intermediate position between the Low-Dietary/Low-Depressive and the Depressive group, the most impaired one, in accordance with previous studies. It thus suggests that other factors beside negative affect can contribute to eating and psychological impairment among overweight/obese women.

Induced dyadic stress and food intake: Examination of the moderating roles of body mass index and restraint

Restrained eaters and overweight and obese people are prone to increase their food intake during stressful situations. This study examines the impact of a stressful couple discussion on food intake in both spouses, while simultaneously taking into account the effect of BMI and restraint on this association. For 15min, 80 heterosexual couples discussed an aspect that they wanted their partner to change followed by an individual bogus taste test for the purpose of measuring his or her stress-induced food intake. Prior to and after the discussion, subjective mood state was assessed, as well as appetite perceptions, and the mood change before and after the discussion was calculated. Multiple regression analyses with a three-way interaction between mood change, BMI, and restraint were used to predict food intake for both men and women, while controlling for appetite perceptions. Only restrained women with a high BMI ate more when their mood worsened. For men, only appetite perceptions significantly predicted food intake. These results suggest that an induced negative mood in the form of a stressful couple discussion impacts food intake differently for men and women, and that particular attention should be given to the concomitant effect of both restraint and BMI when studying stress-induced eating among women.

Couple dissatisfaction and eating profile: A mediation effect of coping style

Individuals’ ways of coping with psychological stress have often been associated with body weight regulation through their impact on eating behaviours. In particular, emotion-oriented and distraction-oriented coping styles have been steadily related to disordered eating. Couple dissatisfaction may be experienced as an important psychological stressor and could therefore affect eating behaviours through the use of inadequate coping strategies. The study proposes 1) to compare women reporting a low vs a high level of couple satisfaction, and 2) to test mediational models including couple satisfaction, coping styles, and eating variables. Analyses were performed among 65 overweight/obese premenopausal women who reported being weight-preoccupied. Women exhibiting couple dissatisfaction (34.8%) showed a higher level of EDE-Q restraint, more intense concerns about eating and shape, a higher level of disinhibition and susceptibility to hunger and endorsed more often a distraction-oriented coping style, independently of their body weight. Furthermore, distraction-oriented coping style seemed to be a valid mediator of the relation between couple dissatisfaction and eating behaviours. Since non-normative eating behaviours, namely disinhibition and susceptibility to hunger, have been particularly linked to a higher body weight status, it is relevant to extend the scope of interest to more distal contributing factors, such as couple dissatisfaction.

Emotion suppression and food intake in the context of a couple discussion: A dyadic analysis

Using dyadic analysis, this study examined whether emotion suppression is a valid mediator in the relationship between mood change following a stressful couple discussion and subsequent food intake among cohabiting couples. In a laboratory setting, 80 heterosexual couples were presented with a bogus taste test immediately after discussing aspects that they would like each other to change. Mood change, emotion suppression and appetite perceptions were self-reported using visual analogue scales, and BMI was calculated based on objective measures. The moderated-mediation Actor-Partner Interdependence Model revealed a significant indirect conditional effect, showing that mood worsening was significantly associated with higher emotion suppression and that emotion suppression was significantly associated with more food intake among spouses with a high BMI. For spouses with a low BMI, the reverse effect was found, i.e., mood worsening was significantly associated with less food intake through the indirect effect of emotion suppression. Furthermore, an indirect partner effect was observed regardless of BMI, i.e., mood worsening was related to more food intake, which was mediated by the partners emotion suppression. These results highlight the key role of emotion suppression in the relationship between mood change and food intake in the context of a stressful couple discussion.