Clinical trial NCT03886428: The Influence of Satiation Measures on the Portion Size Effect
Official title: Lunch Feeding Study for Men and Women
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Feeding Behavior
Lead sponsor: Penn State University
Sponsor class: OTHER
Collaborators: name: Jenny Craig, Inc.
First posted: 2019-03-22
Enrollment: 50
Sex: ALL
Minimum age (years): 18
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: BASIC_SCIENCE

Brief summary: The purpose of this study is to gain a better understanding of the satiation measures that influence human eating behavior in regard to intake of large portion sizes at a meal. The investigators hypothesize that satiation measures will influence the magnitude of the portion size effect at a meal. Additionally, other individual characteristics will be examined for their influence on the portion size effect. The portion size effect will be measured by serving a test meal once a week for four weeks in which the portion size of the entree will be varied.


Eligibility criteria: Inclusion Criteria:

* Be willing and able to travel to Penn State University Park campus weekly for meals
* Be a man or woman 18 - 70 years old
* Regularly eat 3 meals/day
* Be willing to avoid alcohol the day before and during test days
* Have a body mass index between 18.0 and 35.0 kg/m\*m
* Be willing to refrain from eating after 10 pm the evening before test sessions
* Be willing to participate in all study procedures

Exclusion Criteria:

* Must not be a smoker
* Must not be an athlete in training
* Must not be pregnant or breastfeeding at the time of screening
* Have taken prescription or non-prescription drugs that may affect appetite or food intake within the last 3 months
* Dislike or be unable to eat the test foods (because of allergies, intolerance, or dietary restrictions)
* Must not be currently dieting to gain or lose weight
* Have a health condition that affects appetite
* Have participated in a similar study in our lab in the past year
* Must not be a student, faculty, or staff member in nutritional sciences or psychology

Primary outcomes:
measure: Change in energy intake
timeFrame: Weeks 1, 2, 3, 4
measure: Change in intake by weight
timeFrame: Weeks 1, 2, 3, 4
Secondary outcomes:
measure: Change in bite count
timeFrame: Weeks 1, 2, 3, 4
measure: Change in meal duration
timeFrame: Weeks 1, 2, 3, 4
measure: Change in mean bite rate
timeFrame: Weeks 1, 2, 3, 4
measure: Change in mean bite size
timeFrame: Weeks 1, 2, 3, 4
measure: Change in mean eating rate
timeFrame: Weeks 1, 2, 3, 4
measure: Change in distribution of estimated bite size
timeFrame: Weeks 1, 2, 3, 4
measure: Change in sip count
timeFrame: Weeks 1, 2, 3, 4
measure: Change in rating of the pleasantness of the taste of the entree sample
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
measure: Change in rating of the pleasantness of the taste of food samples
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
measure: Change in rating of prospective consumption of the entree sample
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
measure: Change in rating of prospective consumption of food samples
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
measure: Change in rating of hunger
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
measure: Change in rating of thirst
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
measure: Change in ratings of prospective consumption
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
measure: Change in ratings of nausea
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
measure: Change in rating of fullness
timeFrame: From before the test meal to after the test meal in weeks 1, 2, 3, 4
Other outcomes:
measure: Rating of the size of the entree compared to participants' usual portion
timeFrame: At the start of the test meal in weeks 1, 2, 3, 4
measure: Rating of how filling participants expect this amount of food to be
timeFrame: At the start of the test meal in weeks 1, 2, 3, 4
measure: Rating of pleasantness of taste of entree
timeFrame: At the start of the test meal in weeks 1, 2, 3, 4
measure: Ratings of Meal Termination due to fullness
timeFrame: At the end of the test meal in weeks 1, 2, 3, 4
measure: Ratings of Meal Termination due to eating their usual amount
timeFrame: At the end of the test meal in weeks 1, 2, 3, 4
measure: Ratings of Meal Termination due to eating is no longer a priority
timeFrame: At the end of the test meal in weeks 1, 2, 3, 4
measure: Ratings of Meal Termination due to there being no food left
timeFrame: At the end of the test meal in weeks 1, 2, 3, 4
measure: Ratings of Meal Termination due to self-consciousness about amount consumed
timeFrame: At the end of the test meal in weeks 1, 2, 3, 4
measure: Ratings of Meal Termination due to the food no longer tasting good
timeFrame: At the end of the test meal in weeks 1, 2, 3, 4
measure: Rating of proportion of meal eaten
timeFrame: At the end of the test meal in weeks 1, 2, 3, 4
measure: Rating of calories consumed at the meal
timeFrame: At the end of the test meal in weeks 1, 2, 3, 4
Locations:
city: University Park
country: United States
facility: The Pennsylvania State University
state: Pennsylvania
Study officials:
References: