Slowing down eating speed reduces hunger
Washington: A new study by Indian origin researcher has suggested that the ability to control energy intake may be affected by the speed at which we eat, and a high eating rate may impair the relationship between the sensory signals and processes that regulate how much we eat.
In order to learn more about the relationship between eating speed and energy intake, a team of researchers in the Department of Kinesiology at Texas Christian University took a look at how eating speed affects calories consumed during a meal in both normal weight subjects as well as overweight or obese subjects.
The investigators also collected data on feelings of hunger and fullness before and after the fast-paced and slow-paced meals and water consumption during the meals.
The investigators asked a group of normal-weight subjects and a group of overweight or obese subjects to consume two meals in a controlled environment.
All subjects ate one meal at a slow speed, for which they were instructed to imagine that they had no time constraints, take small bites, chew thoroughly, and pause and put the spoon down between bites, and a second meal at a fast speed, for which they were instructed to imagine that they had a time constraint, take large bites, chew quickly, and not pause and put the spoon down.
At the conclusion of the study, researchers found that only normal-weight subjects had a statistically significant reduction in caloric consumption during the slow compared to the fast meal: 88 kcal less for the normal weight group, versus only 58 kcal less for the overweight or obese group.
"Slowing the speed of eating led to a significant reduction in energy intake in the normal-weight group, but not in the overweight or obese group. A lack of statistical significance in the overweight and obese group may be partly due to the fact that they consumed less food during both eating conditions compared to the normal-weight subjects," lead author Meena Shah , PhD, professor in the Department of Kinesiology at Texas Christian University, explained.
Despite the differences in caloric consumption between the normal-weight and overweight and obese subjects, the study found some similarities. Both groups felt less hungry later on after the slow meal than after the fast meal.
The study is published in the Journal of the Academy of Nutrition and Dietetics.
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