Effects of Portion Size of Multiple Items at a Meal on Food Intake of Adults

Not Applicable

Completed

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

• Registration Number: NCT02369588
• Lead Sponsor: Penn State University

Brief Summary

This study tests the effect of serving larger portions of all foods in a meal on the outcome of food and energy intake. Using a crossover design, participants are served the meal once a week for four weeks and the portion sizes are varied at each meal. Some of the foods served at the meal are low in calorie density (calories per gram) and some are higher in calorie density. The aim is to determine whether intake in response to larger portions differs depending on characteristics of the subjects or of the foods.

Detailed Description

Not available

Study Timeline

• Study Start: 2013-03
• Primary Completion: 2013-12
• Study Completion: 2013-12
• Status Verified: 2015-02
• Study First Submitted: 2015-02-17
• Study First Submitted QC: 2015-02-17
• Last Update Submitted: 2015-02-17
• Study First Posted: 2015-02-24
• Last Update Posted: 2015-02-24

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 51

Inclusion Criteria

• Body mass index of 18 to 40 kg/square meter
• Regularly eat three meals per day
• Willing to eat foods served at test meals

Exclusion Criteria

• Food allergies or restrictions
• Dieting to gain or lose weight
• Taking medications known to affect appetite
• Smoker
• Athlete in training
• Currently pregnant or breast-feeding
• Questionnaire score indicative of depression
• Questionnaire score indicative of disordered eating attitudes

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
133% Portion Sizes	Food portion size	Food portion size Test meal consists of portion sizes of all foods that are 133% the size of baseline portions
200% Portion Sizes	Food portion size	Food portion size Test meal consists of portion sizes of all foods that are 200% the size of baseline portions
100% Portion Sizes	Food portion size	Food portion size Test meal consists of baseline (100%) portion size of all foods
167% Portion Sizes	Food portion size	Food portion size Test meal consists of portion sizes of all foods that are 167% the size of baseline portions

Primary Outcome Measures

Name	Time	Method
Differences in meal food intake	Weeks 1, 2, 3, and 4	Differences in weight of food consumed (grams) at the meals
Differences in meal energy intake	Weeks 1, 2, 3, and 4	Differences in energy of food consumed (kilocalories) at the meals
Differences in meal energy density	Weeks 1, 2, 3, and 4	Differences in energy density of food consumed (kilocalories per gram) at the meal

Secondary Outcome Measures

Name	Time	Method
Differences in hunger and satiety	Weeks 1, 2, 3, and 4	Differences in ratings of hunger and satiety either before or after the meal, as assessed by 100-mm visual analog scales (mm)
Differences in ratings of food properties	Weeks 1, 2, 3, and 4	Differences in ratings of food properties (such as taste or healthfulness) as assessed either by 100-mm visual analog scales (mm) or ranking (rank order)

Trial Locations

Locations (1)

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