The Effects of Aspartame on Appetite, Body Composition and Oral Glucose Tolerance

January 16, 2018 updated by: Richard Mattes, Purdue University
Assess the impact of chronic use of aspartame on glycemia, appetite and body composition.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Participants will be randomly assigned to one of three parallel arms: 0% (water), 5 mg, 15mg aspartame. Participants will have an oral glucose tolerance test at the beginning and end of a 12 week intervention. . Participants will report to the lab weekly for 12 weeks to pick up their next week's intervention products and measurements for body weight, waist circumference, blood pressure and heart rate. They will consume their intervention products daily for 12 weeks. They will record appetite sensations and collect a 24 hour urine sample at weeks 0, 4, 8, and 12.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
93

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Indiana
      • West Lafayette, Indiana, United States, 47907
        • Purdue Univeristy

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 60 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • BMI 18-25
  • Fasting blood sugar between 72 and 108 mg/dl via capillary finger-stick.

Exclusion Criteria:

-

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: 0% aspartame (water)
participants will not have any aspartame, this is a control.
Other: water
control group
Experimental: 5 mg aspartame
participants will receive 5 mg aspartame in a beverage.
Other: aspartame
will be given 5mg aspartame or 15 mg aspartame
Experimental: 15mg aspartame
participants will receive 5 mg aspartame in a beverage, and 10mg in capsules.
Other: aspartame
will be given 5mg aspartame or 15 mg aspartame

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
change oral glucose tolerance
Time Frame: week 0 4 hours
sample taken at time point 0
week 0 4 hours
change oral glucose tolerance
Time Frame: week 0 4 hours
sample taken at time point 15 minutes post glucola
week 0 4 hours
change oral glucose tolerance
Time Frame: week 0 4 hours
sample taken at time point 30 minutes post glucola
week 0 4 hours
change oral glucose tolerance
Time Frame: week 0 4 hours
sample taken at time point 60 minutes post glucola
week 0 4 hours
change oral glucose tolerance
Time Frame: week 0 4 hours
sample taken at time point 90 minutes post glucola
week 0 4 hours
change oral glucose tolerance
Time Frame: week 0 4 hours
sample taken at time point 120 minutes post glucola
week 0 4 hours
change oral glucose tolerance
Time Frame: week 0 4 hours
sample taken at time point 180 minutes post glucola
week 0 4 hours
change oral glucose tolerance
Time Frame: week 0 4 hours
sample taken at time point 240 minutes post glucola
week 0 4 hours
change oral glucose tolerance
Time Frame: week 12 4 hours
sample taken at time point 0
week 12 4 hours
change oral glucose tolerance
Time Frame: week 12 4 hours
sample taken at time point 15 minutes post glucola
week 12 4 hours
change oral glucose tolerance
Time Frame: week 12 4 hours
sample taken at time point 30 minutes post glucola
week 12 4 hours
change oral glucose tolerance
Time Frame: week 12 4 hours
sample taken at time point 60 minutes post glucola
week 12 4 hours
change oral glucose tolerance
Time Frame: week 12 4 hours
sample taken at time point 90 minutes post glucola
week 12 4 hours
change oral glucose tolerance
Time Frame: week 12 4 hours
sample taken at time point 120 minutes post glucola
week 12 4 hours
change oral glucose tolerance
Time Frame: week 12 4 hours
sample taken at time point 180 minutes post glucola
week 12 4 hours
change oral glucose tolerance
Time Frame: week 12 4 hours
sample taken at time point 240 minutes post glucola
week 12 4 hours

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Appetite
Time Frame: every hour for 1 day at week 0
questionnaire on hunger, fullness, desire to eat, prospective consumption, thirst taken hourly for one day.
every hour for 1 day at week 0
Appetite
Time Frame: every hour for 1 day at week 4
questionnaire on hunger, fullness, desire to eat, prospective consumption, thirst taken hourly for one day
every hour for 1 day at week 4
Appetite
Time Frame: every hour for 1 day at week 8
questionnaire on hunger, fullness, desire to eat, prospective consumption, thirst taken hourly for one day
every hour for 1 day at week 8
Appetite
Time Frame: every hour for 1 day at week 12
questionnaire on hunger, fullness, desire to eat, prospective consumption, thirst taken hourly for one day
every hour for 1 day at week 12
Body composition
Time Frame: week 0
body composition measurement Plysmography (BOD POD)
week 0
Body composition
Time Frame: week 12
body composition measurement Plysmography (BOD POD)
week 12

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Purdue University

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Ajinomoto USA, INC.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 17, 2016

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 5, 2017

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 5, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 19, 2016

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 20, 2016

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 21, 2016

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 18, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 16, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2018

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 055-045

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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