Quelques aspects de la motivation à manger en fonction de l’index de masse corporelle (de la maigreur à l’obésité massive) dans un groupe de 2 509 adultes

This study examines how chronic dietary restraint, disinhibition, and hunger, as assessed by the Eating Inventory (also called the “Three Factor Eating Questionnaire”), vary over a broad range of Body Mass Index (BMI) values from leanness to massive obesity, in subjects with family obesity. EI factors were also studied as a function of personal weight history. Subjects were 2509 participants in a genetic study of obesity. BMIs ranged from 15 to 87kg/m². Multivariate analyses showed that restraint and disinhibition were significantly associated with the BMI in men, while only disinhibition was in women. Further analyses were performed after subdividing the population in 6 BMI groups. Disinhibition scores correlated strongly with hunger scores in both genders in all BMI categories; dietary restraint tended to correlate with the other two factors positively in leaner subjects, and negatively in highest BMI categories. The highest restraint scores were observed in nonobese adult women with previous obesity in childhood and/or adolescence, suggesting a beneficial influence of restraint on body weight loss. The role of behaviors associated with disinhibition in the development of body adiposity deserves further investigation.