The mechanisms which are involved in food choices, eating behavior and thus energy intake, are still under investigation. In this context, it is necessary to better understand under what conditions people are affected by food-cue exposure. The aim of the present study was to investigate the influence of ambient odor exposure, that mimic odor exposure as it occurs in a natural context, on ad libitum food intake and on sensory specific appetite in obese women. 30 obese women (BMI: 35.04 ± 4.16 kg/m2) attended two sessions in which were exposed unconsciously to bread odor (‘scented’ condition) and to a control condition (‘unscented’ condition). The ordering of the conditions was counterbalanced across participants. Firstly, participants filled out a questionnaire on general appetite as well as appetite for 12 specific products. Subsequently, they entered in the test room where they were exposed to the ‘scented’ or ‘unscented’ condition. The participants repeated the sensory specific appetite questionnaire 10 minutes after entering the odorous room. After approximately 15 minutes of exposure, the ad libitum intake of a low energy dense food product (vegetable soup) was measured. Results showed a significant ‘scented’ condition effect on vegetable soup intake (p<0.05). The odor exposure (bread odor, signaling high energy dense food product) increased significantly the eaten amount of soup (466.37 ± 31.95 g) compared to the ‘unscented’ condition (368.97 ± 34.35g). Appetite for specific products was influenced by odor exposure (p<0.05), with higher scores provided for high energy dense than for low energy dense products. No time effect of odor condition on appetite scores was found. In conclusion, exposure to food odor steered the intake of a low energy dense food product in obese women and stimulated appetite for congruent products. This may have important implications for influencing the energy intake and thus healthy dietary habits.
Unconscious odor exposure affects food intake and sensory specific appetite in obese subjects / C. Proserpio, C. Invitti, M. Laureati, E. Pagliarini. ((Intervento presentato al 12. convegno Pangborn Sensory Science Symposium tenutosi a Providence nel 2017.
Unconscious odor exposure affects food intake and sensory specific appetite in obese subjects
C. Proserpio;M. Laureati;E. Pagliarini
2017
Abstract
The mechanisms which are involved in food choices, eating behavior and thus energy intake, are still under investigation. In this context, it is necessary to better understand under what conditions people are affected by food-cue exposure. The aim of the present study was to investigate the influence of ambient odor exposure, that mimic odor exposure as it occurs in a natural context, on ad libitum food intake and on sensory specific appetite in obese women. 30 obese women (BMI: 35.04 ± 4.16 kg/m2) attended two sessions in which were exposed unconsciously to bread odor (‘scented’ condition) and to a control condition (‘unscented’ condition). The ordering of the conditions was counterbalanced across participants. Firstly, participants filled out a questionnaire on general appetite as well as appetite for 12 specific products. Subsequently, they entered in the test room where they were exposed to the ‘scented’ or ‘unscented’ condition. The participants repeated the sensory specific appetite questionnaire 10 minutes after entering the odorous room. After approximately 15 minutes of exposure, the ad libitum intake of a low energy dense food product (vegetable soup) was measured. Results showed a significant ‘scented’ condition effect on vegetable soup intake (p<0.05). The odor exposure (bread odor, signaling high energy dense food product) increased significantly the eaten amount of soup (466.37 ± 31.95 g) compared to the ‘unscented’ condition (368.97 ± 34.35g). Appetite for specific products was influenced by odor exposure (p<0.05), with higher scores provided for high energy dense than for low energy dense products. No time effect of odor condition on appetite scores was found. In conclusion, exposure to food odor steered the intake of a low energy dense food product in obese women and stimulated appetite for congruent products. This may have important implications for influencing the energy intake and thus healthy dietary habits.
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