Clinical trial NCT05485168: Combined Effects of Sequential Variety and Portion Size on Meal Intake of Women
Official title: Combined Effects of Sequential Variety and Portion Size on Meal Intake of Women
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Eating Behavior
Lead sponsor: Penn State University
Sponsor class: OTHER
Collaborators: name: Jenny Craig, Inc.
First posted: 2022-08-03
Enrollment: 52
Sex: FEMALE
Minimum age (years): 20
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: BASIC_SCIENCE

Brief summary: The primary purpose of this study is to investigate the combined effects of sequential meal variety and portion size on food intake at a meal. Additionally, other individual characteristics will be examined for their influence on the effects of simultaneous variety and portion size on meal intake.


Eligibility criteria: Inclusion Criteria:

* Be willing and able to travel to Penn State University Park campus weekly for meals
* Be fully vaccinated against COVID-19
* Be a woman 20 - 65 years old
* Regularly eat 3 meals/day
* Be willing to refrain from drinking 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
* Must not have taken prescription or non-prescription drugs that may affect appetite or food intake within the last 3 months
* Must not dislike or be unable to eat the test foods (because of allergies, intolerance, or dietary restrictions)
* Must not have a high variability in liking of the test foods
* Must not be currently dieting to gain or lose weight
* Must not have a health condition that affects appetite
* Must not 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 intake by weight
timeFrame: Weeks 1, 2, 3, 4
measure: Change in energy intake
timeFrame: Weeks 1, 2, 3, 4
Secondary outcomes:
measure: Change in bite count
timeFrame: Weeks 1, 2, 3, 4
measure: Change in active eating time
timeFrame: Weeks 1, 2, 3, 4
measure: Change in mean eating rate
timeFrame: Weeks 1, 2, 3, 4
measure: Change in mean bite size
timeFrame: Weeks 1, 2, 3, 4
measure: Change in sip count
timeFrame: Weeks 1, 2, 3, 4
measure: Change in mean drinking rate
timeFrame: Weeks 1, 2, 3, 4
measure: Change in mean sip size
timeFrame: Weeks 1, 2, 3, 4
measure: Change in switching between bites and sips
timeFrame: Weeks 1, 2, 3, 4
measure: Change in rating of pleasantness of the taste of food samples
timeFrame: Weeks 1, 2, 3, 4
measure: Change in rating of desire to eat food samples
timeFrame: Weeks 1, 2, 3, 4
measure: Change in rating of hunger
timeFrame: Weeks 1, 2, 3, 4
measure: Change in rating of thirst
timeFrame: Weeks 1, 2, 3, 4
measure: Change in rating of nausea
timeFrame: Weeks 1, 2, 3, 4
measure: Change in rating of fullness
timeFrame: Weeks 1, 2, 3, 4
measure: Change in rating of prospective consumption
timeFrame: Weeks 1, 2, 3, 4
Other outcomes:
Locations:
city: University Park
country: United States
facility: Laboratory for the Study of Human Ingestive Behavior, The Pennsylvania State University
state: Pennsylvania
Study officials:
References: