The Influence of Satiation Measures on the Portion Size Effect

NCT ID: NCT03886428

Last Updated: 2020-03-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-05-21

Study Completion Date

2019-12-13

Brief Summary

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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.

Detailed Description

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Conditions

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Feeding Behavior

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Participants

Study Groups

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100% Portion Size

Test meal with portion size 100% of baseline

Group Type EXPERIMENTAL

100% portion size

Intervention Type OTHER

Entree portion size 100% of baseline

125% Portion Size

Test meal with portion size 125% of baseline

Group Type EXPERIMENTAL

125% portion size

Intervention Type OTHER

Entree portion size 125% of baseline

150% Portion Size

Test meal with portion size 150% of baseline

Group Type EXPERIMENTAL

150% portion size

Intervention Type OTHER

Entree portion size 150% of baseline

175% Portion Size

Test meal with portion size 175% of baseline

Group Type EXPERIMENTAL

175% portion size

Intervention Type OTHER

Entree portion size 175% of baseline

Interventions

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100% portion size

Entree portion size 100% of baseline

Intervention Type OTHER

125% portion size

Entree portion size 125% of baseline

Intervention Type OTHER

150% portion size

Entree portion size 150% of baseline

Intervention Type OTHER

175% portion size

Entree portion size 175% of baseline

Intervention Type OTHER

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Jenny Craig, Inc.

INDUSTRY

Sponsor Role collaborator

Penn State University

OTHER

Sponsor Role lead

Responsible Party

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Barbara J. Rolls

Professor of Nutrition and Director of the Laboratory for the Study of Human Ingestive Behavior

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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The Pennsylvania State University

University Park, Pennsylvania, United States

Site Status

Countries

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United States

Other Identifiers

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PortionSize106

Identifier Type: -

Identifier Source: org_study_id

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