Eating, Vision & Obesity - Study
Vision and Eating Behavior in Obese Subjects
Eating-Vision-Obesity Study - Aim
Vision is one of a number of factors influencing the amount of food consumed
during a meal. The purpose of this study was to investigate the impact
of vision on the microstructure of the eating behavior of obese subjects.
Eating-Vision-Obesity Study - Methods
Eighteen obese subjects with a body mass index of 39.1 ± 6.3 kg/m2
twice consumed a standardized test meal in excess, once with and once
without a blindfold. The microstructure of the eating behavior was registered
by VIKTOR, a computerized eating monitor. Subjective motivation to eat
(i.e., desire to eat, hunger, satiety, and prospective consumption) was
rated by visual analogue scales (VASs) before, immediately after, and
then hourly up to 3 hours after the test meals.
Eating-Vision-Obesity Study - Results
The obese subjects ate 24 percent less food when blindfolded. Despite
a smaller amount of food consumed when blindfolded, there were no significant
differences with or without the blindfold for any of the VASs measuring
subjective motivation to eat after test meals.
Eating-Vision-Obesity Study - Issues
The importance of vision in regulating our eating behavior was demonstrated
in this study. The obese subjects ate 24 percent less food blindfolded
without feeling less full. Eating blindfolded could be tested as a didactic
tool to make obese subjects aware of what factors affect the termination
of eating.
Source: Huddinge University Hospital. 2003
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