Effect of Portion-control Training on Food Intake

October 20, 2016 updated by: Barbara J. Rolls, Penn State University
The purpose of this study is to test whether food intake in response to large portion sizes differs between women who have received portion-control training and women who have not received such training. In a crossover design, women come to the laboratory on four occasions to eat a lunch of seven foods varying in energy density. Across meals, all foods are varied in portion size (100%, 125%, 150%, or 175% of baseline amounts). Food and energy intake is determined for each meal. Participants are from two groups: women who completed a one-year weight-loss trial in which they were trained in portion-control strategies, and women who had not received such training (community controls).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

105

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Pennsylvania
      • University Park, Pennsylvania, United States, 16802
        • Laboratory for the Study of Human Ingestive Behavior

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 66 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Participant in the Portion-Control Strategies Trial (NCT01474759) OR
  • Community control who regularly eats three meals per day

Exclusion Criteria:

  • Score on the Eating Attitudes Test indicating symptoms of disordered eating
  • Score on the Zung or Beck questionnaires indicating symptoms of depression
  • Food allergies or restrictions
  • Dislike for foods served in the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 100% Portions
Meal portion size: 100%
Other: Meal portion size
Experimental: 125% Portions
Meal portion size: 125%
Other: Meal portion size
Experimental: 150% Portions
Meal portion size: 150%
Other: Meal portion size
Experimental: 175% Portions
Meal portion size: 175%
Other: Meal portion size

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Difference in energy intake across subject groups
Time Frame: Weeks 1, 2, 3, and 4
Calculated energy intake (kcal) based on weight and energy density of food consumed
Weeks 1, 2, 3, and 4
Difference in intake by weight across subject groups
Time Frame: Weeks 1, 2, 3, and 4
Weights (grams) of all food consumed
Weeks 1, 2, 3, and 4
Difference in energy density consumed across subject groups
Time Frame: Weeks 1, 2, 3, and 4
Energy density (kcal/gram) of all food consumed
Weeks 1, 2, 3, and 4

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Ratings of hunger and satiety across subject groups
Time Frame: Weeks 1, 2, 3, and 4
100-point visual analog scales
Weeks 1, 2, 3, and 4

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Ratings of food taste across subject groups
Time Frame: Week 5
100-point visual analog scales
Week 5
Ratings of food healthfulness across subject groups
Time Frame: Week 5
100-point visual analog scales
Week 5

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Penn State University

Collaborators

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2014

Primary Completion (Actual)

May 1, 2015

Study Completion (Actual)

May 1, 2015

Study Registration Dates

First Submitted

October 19, 2016

First Submitted That Met QC Criteria

October 20, 2016

First Posted (Estimate)

October 24, 2016

Study Record Updates

Last Update Posted (Estimate)

October 24, 2016

Last Update Submitted That Met QC Criteria

October 20, 2016

Last Verified

October 1, 2016

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • PortionSize103
  • R01DK059853 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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