The Effect of Portion Sizes on Mood

This study is currently recruiting participants. (see Contacts and Locations)
Verified July 2014 by University of Tennessee
Sponsor:
Information provided by (Responsible Party):
University of Tennessee
ClinicalTrials.gov Identifier:
NCT01725425
First received: November 8, 2012
Last updated: July 24, 2014
Last verified: July 2014
  Purpose

The purpose of this study is to investigate whether different portion sizes will effect overall mood.


Condition Intervention
Mood
Eating Patterns
Other: Control
Other: Increase Portion Size
Other: Decrease Portion Size
Other: Mixed Portions

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single Blind (Subject)
Primary Purpose: Treatment
Official Title: The Impact of Portion Size of Foods on Mood in Normal Weight Adults 18-35

Further study details as provided by University of Tennessee:

Primary Outcome Measures:
  • Total grams of snack food consumed [ Time Frame: 1 year ] [ Designated as safety issue: No ]
    The snack food consumed in this investigation is Lays Potato Chips (Frito-Lay Inc., Plano, TX). Participants will be provided 50 or 100 grams of this food at all sessions depending on which condition they are randomized into. The chips provided to participants in each condition will be measured in grams to the tenth decimal point on an electronic food scale (Denver Instrument Co., Arvada, CO) before and after the session. The weight of the container will also be measured. Total grams of chips consumed during the session will be determined by subtracting pre- and post-consumption weight of the chips.


Secondary Outcome Measures:
  • Total grams of fruit consumed [ Time Frame: 1 year ] [ Designated as safety issue: No ]
    The fruit used in this investigation is red grapes. Participants will be provided 100 grams or 150 grams of red grapes depending on which of the four groups they are participating in. Each individual will go through all four conditions in this investigation. Fruit provided to participants in each condition will be measured in grams to the tenth decimal point on an electronic food scale (Denver Instrument Co., Arvada, CO) before and after the session. The weight of the container will also be measured. Total grams of fruit consumed during the session will be determined by subtracting pre- and post-consumption weight of fruit.


Other Outcome Measures:
  • Relative Reinforcing Value of Foods [ Time Frame: 1 Year ] [ Designated as safety issue: No ]
    As part of the investigation, participants will play a computer game which assesses the relative reinforcing value of the foods used. The number of points earned for each of the foods will be used to assess the relative reinforcing value of the foods.


Estimated Enrollment: 25
Study Start Date: October 2012
Estimated Study Completion Date: August 2015
Estimated Primary Completion Date: December 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Control
Participants will receive equal amounts of foods.
Other: Control
The control is designed to determine average mood.
Experimental: Increase Portion Size
Participants will receive increased portion sizes.
Other: Increase Portion Size
The purpose is to determine whether a change in mood will occur.
Experimental: Decrease Portion Sizes
Participants will receive decreased portion sizes.
Other: Decrease Portion Size
The purpose is to determine whether a change in mood will occur.
Experimental: Mixed Portion Sizes
Participants will receive mixed portion sizes.
Other: Mixed Portions
The purpose is to determine if a change in mood will occur.

Detailed Description:

The objective of this investigation is to determine whether participants will have a change in mood based on the portion size of foods served. The specific aims of the study are:

  1. Determine the effect of increasing portion sizes on mood.
  2. Determine the effect of decreasing portion sizes on mood.
  Eligibility

Ages Eligible for Study:   18 Years to 35 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Age 18-35
  • have a body mass index of 18.5 and 24.9 kg/m^2
  • be an unrestrained eater( scoring less than 12 on the Three Factor Eating Questionnaire)
  • Report Being a non-smoker

Exclusion Criteria:

  • currently pregnant or nursing
  • report being an athlete in training
  • currently taking any medications that affect appetite or food intake
  • Have a medical condition affecting eating or are currently following a therapeutic diet
  • Report disliking foods used in the investigation
  • Report having allergies to foods used in the investigation
  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 ClinicalTrials.gov identifier: NCT01725425

Contacts
Contact: Hollie Raynor, PhD 865-974-6259 hraynor@utk.edu

Locations
United States, Tennessee
The University of Tennessee-Knoxville Recruiting
Knoxville, Tennessee, United States, 37996-1920
Contact: Hollie Raynor, PhD    865-974-6259    hraynor@utk.edu   
Contact: Shireen A Sobhani    865-661-8271    ssobhani@utk.edu   
Principal Investigator: Hollie Raynor, PhD         
Sub-Investigator: Shireen A Sobhani         
Sponsors and Collaborators
University of Tennessee
Investigators
Principal Investigator: Hollie Raynor, PhD University of Tennessee
  More Information

No publications provided

Responsible Party: University of Tennessee
ClinicalTrials.gov Identifier: NCT01725425     History of Changes
Other Study ID Numbers: 8964B
Study First Received: November 8, 2012
Last Updated: July 24, 2014
Health Authority: United States: Institutional Review Board

Keywords provided by University of Tennessee:
snack food (chips)
fruit (red grapes) consumed in each condition
mood

ClinicalTrials.gov processed this record on October 21, 2014