Effect of Portion-control Training on Food Intake

Not Applicable

Completed

• Conditions: Feeding Behaviors
• Interventions: Other: Meal portion size

• Registration Number: NCT02942589
• Lead Sponsor: Penn State University

Brief Summary

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).

Detailed Description

Not available

Study Timeline

• Study Start: 2014-02
• Primary Completion: 2015-05
• Study Completion: 2015-05
• Status Verified: 2016-10
• Study First Submitted: 2016-10-19
• Study First Submitted QC: 2016-10-20
• Last Update Submitted: 2016-10-20
• Study First Posted: 2016-10-24
• Last Update Posted: 2016-10-24

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 105

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 & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
125% Portions	Meal portion size	Meal portion size: 125%
100% Portions	Meal portion size	Meal portion size: 100%
175% Portions	Meal portion size	Meal portion size: 175%
150% Portions	Meal portion size	Meal portion size: 150%

Primary Outcome Measures

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

Secondary Outcome Measures

Name	Time	Method
Ratings of hunger and satiety across subject groups	Weeks 1, 2, 3, and 4	100-point visual analog scales

Trial Locations

Locations (1)

Laboratory for the Study of Human Ingestive Behavior; 🇺🇸 University Park, Pennsylvania, United States