Poster Topical Area: Chronobiology and Nutrition
Poster Board Number: 177
Introduction: Late distribution of food intake has recently been recognized as a determinant of obesity and few studies have observed that late eating is associated with a higher energy intake (EI). However, the mechanisms by which timing of food intake impacts body weight are not well understood. Objective: The aim of this study was to assess the associations among distribution of food intake, eating and psychobehavioral traits.
Methods: Overweight and obese individuals (n=304; age 38.7±8.4 years; BMI 33.2±3.4 kg/m2, 55.3% women) who participated in four studies were included in this cross-sectional study. EI was assessed using a three-day food record. The distribution of EI was assessed by calculating the percent of total EI from period 5 (5:00 pm to 7:59 pm) and period 6 (8:00 pm until bedtime). Eating behavior traits were assessed with the Three-Factor Eating Questionnaire and the Binge Eating Scale whereas psychobehavioral factors were evaluated using the Pittsburgh Sleep Quality Index, Body Esteem Scale, Beck Depression Inventory, State-Trait Anxiety Inventory and Perceived Stress Scale. Pearson correlations were used to assess the associations between distribution of EI and those variables among men and women.
Results: Among women, percent EI from combined values of periods 5 and 6 was positively associated with disinhibition (r=0.26, p=0.001) and with habitual and situational susceptibility to disinhibition (r=0.22, p=0.005 and r=0.18, p=0.03, respectively). Percent EI from period 6 was positively associated with strategic dieting behavior (r=0.17, p=0.03) in women. In men, percent EI from periods 5 and 6 was negatively associated with susceptibility to hunger (r=-0.19, p=0.03) whereas percent EI from period 6 was positively correlated with susceptibility to hunger (r=0.18, p=0.0496). Percent EI from period 6 was also positively associated with depressive symptoms (r=0.22, p=0.02), perceived stress (r=0.23, p=0.01) and with state and trait-anxiety (r=0.22, p=0.02 and r=0.32, p=0.001, respectively) in men.
Conclusions: The results of this study suggest that a higher proportion of EI consumed later in the day is associated with suboptimal eating and psychobehavioral traits and could contribute to explain the association between a delayed distribution of food intake and obesity.
This study was partly funded by a grant of the Ministère de l'Enseignement supérieur, Recherche, Science et Technologie du Québec. AT is the holder of the Canada Research Chair in Environment and Energy Balance. RJ is a recipient of a PhD scholarship from the Fonds de Recherche du Québec - Santé. SP is the recipient of a postdoctoral fellowship from MITACS Accelerated.
Laval University, School of Nutrition, Institute of Nutrition and Functional Foods (INAF), Quebec Heart and Lung Institute Research Center, Quebec, Canada
Quebec City, Quebec, Canada