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Intake Promoting Effects of Large Portions in Children

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified June 2010 by Temple University.
Recruitment status was:  Recruiting
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Information provided by:
Temple University Identifier:
First received: February 16, 2007
Last updated: February 4, 2011
Last verified: June 2010
The purpose of this study is to test the effects of large food portions on children's eating. Experiment 1 will test the effect of portion size on children's consumption of sweetened beverages; we hypothesize that serving large beverage portions will increase the amount of energy children consume from this food. Experiment 2 will test the effects of portion size on children's intake of fruits and vegetables (FV) affect intake whether such effects are moderated by children's FV preferences and; we hypothesize that serving large fruit and vegetable portions will produce increases in children's intake of these foods, particularly for children who like fruit and vegetables. Experiment 3 will evaluate how food energy density affects children's response to large portions; we hypothesize that large portions will have the greatest influence on children's energy consumption when foods are energy dense. Experiment 4 will begin to address perceptual mechanisms by which large portions affect children's eating.

Condition Intervention
Food Intake Behavioral: Food portion size

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment

Further study details as provided by Temple University:

Primary Outcome Measures:
  • Intake of portion manipulated foods [ Time Frame: In each experimental condition; 4 times in each 2 x 2 factorial experiment ]
  • Total energy consumed [ Time Frame: In each experimental condition; 4 times in each 2 x 2 factorial experiment ]

Estimated Enrollment: 160
Study Start Date: October 2005
Estimated Primary Completion Date: July 2010 (Final data collection date for primary outcome measure)
Intervention Details:
    Behavioral: Food portion size
    Each of four experiments involves a 2 x 2 within-subjects factorial design, in which the first factor is the portion size of a food served to children: foods will be served in a reference amount (i.e. 250 g macaroni and cheese) or doubled in size(i.e. 500 g of macaroni and cheese). In the Experiment 1, the second factor of the 2 x 2 design is meal type: whether the food is consumed at a meal or a snack. In experiment #2, the second factor is food type: fruit vs. vegetable. In experiment #3, the second factor is entree energy density: a regular energy density or a 40% greater energy density. In experiment #4, the second factor is plate size: a 6 inch plate vs. a 10 inch plate.
Detailed Description:
The emerging epidemic of overweight among underscores the need to identify contributing environmental factors. Marketplace trends for excessive and growing portion sizes in and outside the home have reinforced concerns that large portions may directly contribute by promoting excessive intake. To date, however, systematic investigation of portion size effects on children's eating has been extremely limited. Two laboratory studies have reported that serving large portions of macaroni and cheese to young children promoted energy consumption at meals. Whether portion size effects would be seen with other foods of varying energy content and preference is unknown. Of particular public health interest is whether serving large portions may affect children's intake of sweetened beverages, fruits and vegetables, and energy dense foods. This study will address these questions using an experimental approach to test the effects of portion size on children's eating.

Ages Eligible for Study:   5 Years to 6 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • 5 to 6 years

Exclusion Criteria:

  • severe food allergies
  • chronic illnesses or medication use affecting food intake
  • dislike of foods on the menu
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00436878

United States, Texas
USDA\ARS Children's Nutrition Research Center Recruiting
Houston, Texas, United States, 77030
Contact: Joanne Salman, MS    713-798-7038   
Principal Investigator: Jennifer O Fisher, PhD         
Sponsors and Collaborators
Temple University
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Principal Investigator: Jennifer O Fisher, PhD Baylor College of Medicine
  More Information

Responsible Party: Jennifer Orlet Fisher, PhD, Assistant Professor of Pediatrics, Baylor College of Medicine Identifier: NCT00436878     History of Changes
Other Study ID Numbers: DK71095
R01DK071095 ( US NIH Grant/Contract Award Number )
Study First Received: February 16, 2007
Last Updated: February 4, 2011

Keywords provided by Temple University:
Eating Behavior
Portion size
Experimental processed this record on June 26, 2017