The impact of a mental work on food preferences, eating behavior traits and satiety efficiency

Authors: Salama, Miram; Drapeau, VickyTremblay, AngeloPérusse-Lachance, Émilie
Abstract: Sedentary lifestyles, which are partly due to the type of labor being performed, have contributed to the increased prevalence of obesity. In general, labor in a modern context solicits mental work, which has been shown to promote overeating and altered satiety efficiency. The aim of this study was to evaluate the impact of knowledge-based work on food preferences, eating behaviors traits and appetite sensations. The relationship between these effects and the morphological profile was also assessed. A cross-over experimental design was used in this study for which 35 healthy adults (22 men and 13 women (mean age: 24 ± 3 years)), were recruited. The participants were randomly assigned the one of the two following conditions: mental work (reading a document and writing a summary of 350 words with the use of a computer) or control (rest in seated position). Each condition lasted 45 min, and was followed by a standardized ad libitum buffet-type meal. Measurements included anthropometric variables, ad libitum food intake, appetite sensations before and after each condition, and satiety quotient, a marker of satiety efficiency in response to the meal. Eating behavior traits were also evaluated using the Three-Factor Eating Questionnaire (TFEQ). Eating behaviors (restriction, disinhibition) were not associated with the energy intake in both conditions and in both genders. Women appeared to have a higher energy intake after the mental work condition (p < 0.05), which was accompanied by an increased carbohydrate intake (p < 0.05). Moreover, participants with the highest waist circumference had lower satiety efficiency (r = 0.43, p < 0.05) in response to mental work. These results suggest that increased energy intake in response to knowledge-based work is associated with food preference and an altered satiety efficiency in women and individuals with higher waist circumference.
Document Type: Article de recherche
Issue Date: 1 December 2015
Open Access Date: Restricted access
Document version: VoR
This document was published in: Physiology and behavior, Vol. 154 (1), 191-195 (2016)
Alternative version: 10.1016/j.physbeh.2015.11.015
Collection:Articles publiés dans des revues avec comité de lecture

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