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Snack Food Reinforcement in Obese and Non-Obese Women

This study has been completed.
Information provided by:
State University of New York at Buffalo Identifier:
First received: February 3, 2009
Last updated: February 4, 2009
Last verified: February 2009
Food reinforcement, motivation to obtain food, is associated with energy intake and obesity. Finding ways to decrease the reinforcing value of unhealthy foods may help with adherence to diets and weight loss. Our previous study in non-obese adults showed that daily consumption of the same snack food (food typically consumed outside of meals) for 14 days significantly decreased its reinforcing value. The purpose of this study was to replicate and extend these findings to obese individuals as well as to examine effects of different portion sizes of snack foods on food reinforcement. Thirty-one obese (body mass index > 30 kg/m2) and 27 non-obese (BMI < 30 kg/m2) women had food reinforcement and liking tested at baseline and after two weeks of daily consumption of either 0 kcal, 100 kcals, or 300 kcals daily of the same snack food.


Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Differential Effects of Daily Snack Food Intake on Reinforcing Value of Food in Obese and Non-Obese Women.

Further study details as provided by State University of New York at Buffalo:

Primary Outcome Measures:
  • number of responses made for food
  • Energy intake

Secondary Outcome Measures:
  • body weight
  • height

Study Start Date: May 2007
Study Completion Date: June 2008
Primary Completion Date: June 2008 (Final data collection date for primary outcome measure)
Non-obese/0 kcal
Non-obese/100 kcal
Non-obese/300 kcal
Obese/0 kcal
Obese/100 kcal
Obese/300 kcal


Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Women ages 18 - 50 years who were obese (body mass index >/= 30) or non-obese (BMI < 30)

Inclusion Criteria:

  • women
  • non-smoker
  • not on a diet
  • no restrained eating
  • had to like potential snack foods
  • willing to visit the laboratory 3 times
  • willing to eat snacks provided
  • no medications or medical conditions that affect appetite
  • no food allergies

Exclusion Criteria:

  • see above
  Contacts and Locations
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Please refer to this study by its identifier: NCT00837694

United States, New York
University at Buffalo
Buffalo, New York, United States, 14214
Sponsors and Collaborators
State University of New York at Buffalo
Principal Investigator: Jennifer L Temple, Ph.D. University at Buffalo
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Jennifer Temple/Assistant Professor, University at Buffalo Identifier: NCT00837694     History of Changes
Other Study ID Numbers: Temple1
Study First Received: February 3, 2009
Last Updated: February 4, 2009

Keywords provided by State University of New York at Buffalo:
food reinforcement
snack food
Portion size of daily snacks
Weight status processed this record on September 21, 2017