Free Fatty Acids: Threshold Repeatability Study

November 21, 2013 updated by: Richard Mattes, Purdue University
This study seeks to determine if non-esterified fatty acid (NEFA) taste detection thresholds change with repeated testing. Threshold testing for NEFA taste has been reported by a number of laboratories, including our own; however, these studies have reported data for only one testing occasion. The investigators seek to conduct repeated testing to measure the test-retest reliability of these methods. The investigators believe that with repeated exposure to NEFA, a person's sensitivity increases. The investigators are also testing the efficiency of testing by two methods (forced-choice ascending trial versus staircase). Additionally, the association between taste responses, diet and BMI will be explored.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Anticipated)

48

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 University

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

Ages Eligible for Study

18 years to 55 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Participants between the ages of 18 and 55 years of age from any ethnic background who are in good health and are available for the next three months will be recruited. Additionally, equal numbers of lean and overweight participants will be sought.

Description

Inclusion Criteria:

  • 18-55 years old
  • in good health
  • available for three months

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

  • Observational Models: Case-Crossover
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Non-esterified fatty acid detection thresholds in humans
Time Frame: 6 months
6 months
BMI
Time Frame: Baseline
Baseline

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Habitual fat intake
Time Frame: Baseline
Block Rapid Dietary Fat Screener will be used as well as the ASA-24.
Baseline
testing method
Time Frame: 6 months
Comparison of time to maximum sensitivity by participants based on forced-choice versus staircase stimulus presentation techniques.
6 months
hunger
Time Frame: each visit
Visual analog scale
each visit

Collaborators and Investigators

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

Sponsor

Purdue University

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

March 1, 2012

Primary Completion (Actual)

November 1, 2013

Study Completion (Actual)

November 1, 2013

Study Registration Dates

First Submitted

March 7, 2012

First Submitted That Met QC Criteria

March 8, 2012

First Posted (Estimate)

March 9, 2012

Study Record Updates

Last Update Posted (Estimate)

November 25, 2013

Last Update Submitted That Met QC Criteria

November 21, 2013

Last Verified

March 1, 2013

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 055-027

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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