The Role of Satiety in the Effect of Portion Size on Intake

NCT ID: NCT03409601

Last Updated: 2019-03-18

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

TERMINATED

Clinical Phase

NA

Total Enrollment

14 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-04-02

Study Completion Date

2018-12-14

Brief Summary

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The study uses a crossover design in which the portion size of food is varied at each meal. Across four test meals, subjects will be served four different portions of food, and intake will be determined from pre- and post-meal food weights. The first visit will be a screening visit, at which subjects will complete the consent form, have their height and weight measured, and rate the taste of the study food. Test meals will be scheduled once a week for four weeks. At visits 2-5, subjects will eat lunch and rate characteristics of the meal. At visit 6, subjects will complete various questionnaires. The objective of this study is to determine whether any individual characteristics related to satiety influence the effect of portion size on intake.

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 consists of baseline (100%) portion size of meal.

Group Type EXPERIMENTAL

100% Portion Size

Intervention Type OTHER

Meal portion size at baseline

125% Portion Size

Test meal consists of food portion size that is 125% the size of baseline portion.

Group Type EXPERIMENTAL

125% Portion Size

Intervention Type OTHER

Meal portion size 125% of baseline

150% Portion Size

Test meal consists of food portion size that is 150% the size of baseline portion.

Group Type EXPERIMENTAL

150% Portion Size

Intervention Type OTHER

Meal portion size 150% of baseline

175% Portion Size

Test meal consists of food portion size that is 175% the size of baseline portion.

Group Type EXPERIMENTAL

175% Portion Size

Intervention Type OTHER

Meal portion size 175% of baseline

Interventions

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100% Portion Size

Meal portion size at baseline

Intervention Type OTHER

125% Portion Size

Meal portion size 125% of baseline

Intervention Type OTHER

150% Portion Size

Meal portion size 150% of baseline

Intervention Type OTHER

175% Portion Size

Meal 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 - 60 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-squared
* Be willing to refrain from eating after 10 pm the evening before test sessions

Exclusion Criteria

* A smoker
* An athlete in training
* 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)
* 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
Minimum Eligible Age

20 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Penn State University

OTHER

Sponsor Role lead

Responsible Party

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Barbara J. Rolls

BJR

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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PortionSize104

Identifier Type: -

Identifier Source: org_study_id

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