Personne : Doré, Jean
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Département de kinésiologie, médecine sociale et préventive, Faculté de médecine, Université Laval
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- PublicationRestreintAwakening cortisol response in relation to psychosocial profiles and eating behaviors(Pergamon Press, 2007-09-05) Drapeau, Vicky; Doré, Jean; Lupien, Sonia; Therrien, Fanny; Beaulieu, Serge; Tremblay, Angelo; Richard, DenisAwakening cortisol response was measured in 78 men and women, on 3 mornings within a 2-month period. Psychosocial and eating behavior variables were assessed using self-administered questionnaires on anxiety (State–Trait Anxiety Inventory), depression (Beck Depression Inventory), body esteem (Body Esteem Scale for Adolescents and Adults), and eating behaviors (Three-Factor Eating Questionnaire and Eating Disorder Inventory-2). Data on food intake and appetite sensations were also collected using a buffet-type meal test, a 3-day food record and visual analog scales measured before and after a standardized breakfast meal test. In women, high anxiety, disinhibition and hunger scores, as well as poor body esteem and a high weight preoccupation, were negatively correlated to ACR. The factor that appeared to account the most for this inverse relation was emotional susceptibility to disinhibition (r = − 0.61, p = 0.003). The latter was also negatively associated with the satiety quotient for fullness in response to the standardized breakfast (r = − 0.48, p = 0.010). In men, ACR was negatively associated with flexible (r = − 0.33, p = 0.020) and strategic (r = − 0.28, p = 0.049) restraint behaviors. This study highlights a gender-dependent relationship between ACR, hence the activity of the hypothalamic–pituitary–adrenal axis, and eating behaviors and psychological profiles.
- PublicationRestreintCortisol response to the Trier Social Stress Test in obese and reduced obese individuals(North-Holland Pub. Co., 2010-03-17) Drapeau, Vicky; Doré, Jean; Therrien, Fanny; Lupien, Sonia; Beaulieu, Serge; Tremblay, Angelo; Lalonde, Josée.Impact of body weight loss, body fat distribution and the nutritional status on the cortisol response to the Trier Social Stress Test (TSST) was investigated in this study. Fifty-one men (17 non-obese, 20 abdominally obese and 14 reduced obese) and 28 women (12 non-obese, 10 peripherally obese and 6 reduced obese) were subjected to the TSST in fed and fasted states. The TSST response was determined using salivary cortisol measurements. The nutritional status (being fed or fasted) had no effect on the cortisol levels during and following the TSST. Reduced obese men exhibited lower cortisol levels than non-obese men. Cortisol levels in obese men were not different from those of non-obese and reduced obese subjects. In women, there was no significant difference between groups. These finding suggest that weight status in men influences cortisol reactivity to a psychological stress and the different responses seen among genders could be linked to the different fat distributions that characterize men and women.
- PublicationAccès libreEffects of a diet-based weight-reducing program with probiotic supplementation on satiety efficiency, eating behaviour traits and psychosocial behaviours in obese individuals(MDPI AG, 2017-03-15) Drapeau, Vicky; Doré, Jean; Sanchez, Marina; Marette, André.; Tremblay, Angelo; Darimont, Christian; Panahi, Shirin; Taylor, Valérie H.This study evaluated the impact of probiotic supplementation (Lactobacillus rhamnosus CGMCC1.3724 (LPR)) on appetite sensations and eating behaviors in the context of a weight-reducing program. Obese men (n = 45) and women (n = 60) participated in a double-blind, randomized, placebo-controlled trial that included a 12-week weight loss period (Phase 1) based on moderate energy restriction, followed by 12 weeks of weight maintenance (Phase 2). During the two phases of the program, each subject consumed two capsules per day of either a placebo or a LPR formulation (10 mg of LPR equivalent to 1.6 108 CFU/capsule, 210 mg of oligofructose, and 90 mg of inulin). The LPR supplementation increased weight loss in women that was associated with a greater increase in the fasting desire to eat (p = 0.03). On the other hand, satiety efficiency (satiety quotient for desire to eat) at lunch increased (p = 0.02), whereas disinhibition (p = 0.05) and hunger (p = 0.02) scores decreased more in the LPR-treated women, when compared with the female control group. Additionally, the LPR female group displayed a more pronounced decrease in food craving (p = 0.05), and a decrease in the Beck Depression Inventory score (p = 0.05) that was significantly different from the change noted in the placebo group (p = 0.02), as well as a higher score in the Body Esteem Scale questionnaire (p = 0.06). In men, significant benefits of LPR on fasting fullness and cognitive restraint were also observed. Taken together, these observations lend support to the hypothesis that the gut-brain axis may impact appetite control and related behaviors in obesity management. View Full-Text
- PublicationAccès libreEffect of Lactobacillus rhamnosus CGMCC1.3724 supplementation on weight loss and maintenance in obese men and women(Cambridge, 2014-04-28) Drapeau, Vicky; Darimont, Christian; Chevrier, Geneviève; Doré, Jean; Emady-Azar, Shahram; Sanchez, Marina; Marette, André.; Rezzonico, Enea; Cossette-Harvey, Mélissa; Ngom Bru, Catherine; St-Amand, Emmanuelle; Berger, Bernard; Tremblay, Angelo; Philippe, Lionel; Ammon-Zuffrey, Corinne; Leone, PatriciaThe present study investigated the impact of a Lactobacillus rhamnosus CGMCC1.3724 (LPR) supplementation on weight loss and maintenance in obese men and women over 24 weeks. In a double-blind, placebo-controlled, randomised trial, each subject consumed two capsules per d of either a placebo or a LPR formulation (1·6 × 108 colony-forming units of LPR/capsule with oligofructose and inulin). Each group was submitted to moderate energy restriction for the first 12 weeks followed by 12 weeks of weight maintenance. Body weight and composition were measured at baseline, at week 12 and at week 24. The intention-to-treat analysis showed that after the first 12 weeks and after 24 weeks, mean weight loss was not significantly different between the LPR and placebo groups when all the subjects were considered. However, a significant treatment × sex interaction was observed. The mean weight loss in women in the LPR group was significantly higher than that in women in the placebo group (P= 0·02) after the first 12 weeks, whereas it was similar in men in the two groups (P= 0·53). Women in the LPR group continued to lose body weight and fat mass during the weight-maintenance period, whereas opposite changes were observed in the placebo group. Changes in body weight and fat mass during the weight-maintenance period were similar in men in both the groups. LPR-induced weight loss in women was associated not only with significant reductions in fat mass and circulating leptin concentrations but also with the relative abundance of bacteria of the Lachnospiraceae family in faeces. The present study shows that the Lactobacillus rhamnosus CGMCC1.3724 formulation helps obese women to achieve sustainable weight loss.