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Effect of viscosity on learned satiation.
M Mars1, P S Hogenkamp, A M Gosses
1Top Institute Food and Nutrition, PO Box 557, NL-6700 AN, Wageningen, The Netherlands.
Physiology & Behavior
|April 28, 2009
Summary
Higher viscosity foods enhance learned satiation by prolonging oral sensory signals. This study found high viscosity yogurt improved the association between sensory cues and energy density, leading to better appetite regulation.
Area of Science:
- Food Science
- Nutritional Neuroscience
- Sensory Science
Background:
- Food viscosity influences orosensory stimulation duration.
- Prolonged stimulation may enhance learned associations between sensory input and metabolic feedback.
- Understanding viscosity's role in learned satiation is crucial for appetite control.
Purpose of the Study:
- To investigate the effect of food viscosity on learned satiation.
- To determine if higher viscosity facilitates the association between sensory signals and energy density.
- To assess the impact of viscosity on food intake over repeated exposures.
Main Methods:
- Two intervention groups: low viscosity (LV) yogurt (n=24) and high viscosity (HV) yogurt (n=22).
- A 4-week learning period involving ad libitum consumption of novel flavored high energy density (HED) or low energy density (LED) yogurts.
- 10 exposures to each yogurt type on alternate days, with intake monitored.
Main Results:
- A significant interaction effect of exposure, energy density, and viscosity on intake was observed (p=0.04).
- In the HV group, a borderline significant interaction (p=0.06) showed LED yogurt intake was 46g higher than HED yogurt after 10 exposures.
- In the LV group, no significant interaction was found, with only a 1.5g intake difference between LED and HED yogurts.
Conclusions:
- Higher food viscosity facilitates learned satiation.
- Viscosity enhances the ability to associate sensory cues with energy density, improving appetite regulation.
- These findings have implications for designing foods that promote satiety and aid in weight management.
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