Effect of Portion-control Training on Food Intake

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

105 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-02-28

Study Completion Date

2015-05-31

Brief Summary

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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).

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Detailed Description

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Conditions

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Feeding Behaviors

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Participants

Study Groups

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100% Portions

Meal portion size: 100%

Group Type EXPERIMENTAL

Meal portion size

Intervention Type OTHER

125% Portions

Meal portion size: 125%

Group Type EXPERIMENTAL

Meal portion size

Intervention Type OTHER

150% Portions

Meal portion size: 150%

Group Type EXPERIMENTAL

Meal portion size

Intervention Type OTHER

175% Portions

Meal portion size: 175%

Group Type EXPERIMENTAL

Meal portion size

Intervention Type OTHER

Interventions

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Meal portion size

Intervention Type OTHER

Eligibility Criteria

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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

Minimum Eligible Age

20 Years

Maximum Eligible Age

66 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No