Eating Behavior Clinical Trial
Official title:
Al Dente or Well Done? The Eating Rate of a Pasta Meal Modified by Texture
Rationale: The world-wide rising obesity rates are a major health problem. Therefore, people should moderate food intake. A lower eating rate will decrease the energy intake. The eating rate of foods can be modified by changing the texture without affecting their acceptability. Harder, chunkier, more viscous, and more voluminous foods will decrease the eating rate and thus energy intake. However, the impact of texture on oral processing has mostly been studied as a model or single food system, whereas a diet consists of many different food products often consumed in combination. Little has been researched on the effect of food texture on eating rate within the context of realistic meals. It is not known if the eating rate of a meal is determined by the eating rate component with the lowest eating rate or if there is an additive effect of the eating rates of all components of the meal. Objective: The aim of the ESPA study is to determine how the eating rate of a pasta meal can be changed by manipulating the hardness of the ingredients and to investigate if the eating rate of a meal is determined by the eating rate of the component with the lowest eating rate or if there is an additive effect of the eating rates of all components of the meal. Study design: The study is a randomized crossover trial. All participants receive all pasta samples. Study population: Healthy adults (n=50) between 18-55 years old with European nationality, and a BMI between 18.5-30 kg/m2. Intervention: Participants will attend three test sessions during lunch in which in total twelve pasta samples will be consumed. The pasta samples will consists of individual or combined pasta noodles, vegetables, and sauce differing in hardness. The order of the samples will be randomized. After the consumption of the test samples, the participants will rate their appetite and the sensory characteristics of the samples. During the test sessions, participants will be video recorded to determine their eating behavior. Main study parameters/endpoints: The main study outcome is the eating rate (g/min). Secondary outcomes are the oral processing characteristics assessed with the video recordings (meal duration [min], bite duration [min], number of bites, number of chews, average bite size [g], average amount of chews per bite, and oral sensory exposure time [min]) and sensory characteristics rated on a visual analogue scale (liking [flavor, texture, and overall], flavor intensity, sweetness, saltiness, sourness, hardness, and chewiness).
The study has a randomized crossover design with three test sessions. All participants receive twelve pasta samples (four per test session) and are their own control (within subject effects). Participants attend three test sessions during which they eat four pasta samples. The pasta samples will have a fixed amount and differ in pasta noodle and vegetable hardness. Eight pasta samples will consist out of only penne or carrots with or without sauce. Four pasta samples will consist out of penne, carrots, and sauce. The sample order will be randomized, but in each test session only one or two of sample 9 to 12 will be served. The samples will be served on a plate together with a fork. Procedure of the study: Throughout study period : - No use of drugs - Medication use + illness should be reported Evening preceding test day: • Not allowed to eat or drink after 22.00 except for water Morning of test day: - Do not perform intensive exercise - Eat the same breakfast at the same time each test day - If wanted, eat the same morning snack at the same time each test day - Not allowed to eat or drink two hours prior the study session except for water - Have a negative corona test Lunch - Give instructions (eat as you normally would do, eat the whole sample without taking breaks or sips of water in between, you can take a new bite before you swallowed the previous one) - Seated at sensory booth with fork, knife, spoon, 200 mL of water and three pieces of a plain cracker - Question about food consumption that morning - Appetite questionnaire - Eat the pasta sample (one of twelve conditions) while recording eating behavior - Sensory questionnaire - Appetite questionnaire - Taste neutralization by waiting for two minutes, taking sip of water and bite of cracker - Repeat * ... * until four pasta samples are consumed - Appetite questionnaire Participants will be recruited from Wageningen and surroundings using an e-mailing list, social media, and flyers. Healthy (self-report), normal weight (18.5-30 kg/m2) men and women between 18-55 years old will be included. Participants need to have European nationality, and have to be able to understand and speak English (self-report), because of the sensory questionnaire and appetite questionnaire which will be in English and have difficult direct translations to Dutch. As 90% of the people that show interest in the study are university students this should not be a problem. The BMI range is based on the average BMI in the Netherlands, which is 25 kg/m2 but around 50% of the Dutch population is overweight. To be able to include sufficient subjects it was therefore chosen to widen the BMI range and include people up to a BMI of 30 kg/m2. Due to the within subject design this will not influence the outcome of the study, but results will be more generalizable to people with an average weight. ;
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