Liking of Snack Foods - Sub-Study 1

September 12, 2005 updated by: The Miriam Hospital

The Effect of Portion Size and Quantity of Food Provided on Intake

Specific Aims: Environmental factors contributing to overconsumption, such as larger food portion sizes, may be contributing to the obesity epidemic. The objective of the proposed study is to examine the independent and combined effects of portion size and quantity of food on intake in normal weight males and females. Participants will be randomly assigned to one of four conditions varying in the portion size and quantity of junk food provided: small quantity of food packaged in small portions (SSP), small quantity of food packaged in large portions (SLP), large quantity of food packaged in small portions (LSP), and large quantity of food packaged in large portions (LLP). A box containing four different junk foods, packaged according to one of the four conditions, will be given to participants to take home for three days. The total amount of food consumed from the box over the three days will be measured. It is anticipated that portion size and quantity of food, both independently and combined, will influence intake, such that larger portion sizes and quantity of food provided to participants will produce greater intake.Subject Population: We propose to recruit 60 healthy men and women, aged 18-50 years, with a body mass index (BMI) of less than or equal to 28. Participants will be non-smokers, unrestrained eaters, and have no known food allergies to the foods used in the investigation.Methods/Design: Participants will be randomly assigned to one of four conditions, varying in portion size (small versus large) and quantity of food provided (small versus large). A box containing four junk foods, packaged according to one of the conditions, will be provided to participants. They will be encouraged to eat as much or as little of the food as they want, but to at least taste each of the four foods over the three-day period. During this time, they will be instructed to not eat any other junk foods. At the end of the three-day period, participants will return the box with any remaining uneaten junk food.Data Analyses: The dependent variables, the amount of grams and kcals consumed from the provided junk foods, will be examined between the four different conditions.Significance: If portion size and quantity are related to intake, subsequent studies will develop clinical interventions related to reducing portion size and/or quantity of food available in the household.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment

32

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
    • Rhode Island
      • Providence, Rhode Island, United States, 02903
        • The Weight Control and Diabetes Research Center

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

18 years to 50 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

Healthy, non-smoking, normal- and over-weight (body mass index [BMI] < 30) unrestrained, males and females, who regularly eat junk foods (consume junk foods > 3 times per week).

Exclusion Criteria:

Participants will be excluded if they are not between the ages of 18 and 50, smoke, following a weight loss diet, an athlete in training, pregnant or breastfeeding, or have a health condition or use medication that affects eating or requires specialized diet therapy (e.g., diabetes). Additionally, if participants rarely consume junk foods (< 2 times per week) or have allergies or unfavorable preferences towards foods used in the investigation they will be excluded from the study. Participants will also be excluded if they are a restrained eater (scoring > 12 on the Three Factor Eating Questionnaire [TFEQ] [Stunkard & Messick, 1985]) or report being a binge eater.-

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Amount of food eaten

Secondary Outcome Measures

Outcome Measure
Liking of foods in study

Collaborators and Investigators

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

Sponsor

The Miriam Hospital

Investigators

  • Principal Investigator: Hollie A Raynor, PhD, The Miriam Hospital

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, 2004

Study Completion

March 1, 2005

Study Registration Dates

First Submitted

September 12, 2005

First Submitted That Met QC Criteria

September 12, 2005

First Posted (Estimate)

September 20, 2005

Study Record Updates

Last Update Posted (Estimate)

September 20, 2005

Last Update Submitted That Met QC Criteria

September 12, 2005

Last Verified

September 1, 2005

More Information

Terms related to this study

Other Study ID Numbers

  • 2107-02

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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