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Free Fatty Acids: Threshold Repeatability Study

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01550120
Recruitment Status : Completed
First Posted : March 9, 2012
Last Update Posted : November 25, 2013
Information provided by (Responsible Party):
Richard Mattes, Purdue University

Brief Summary:
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.

Condition or disease
Taste, Non-esterified Fatty Acids

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Study Type : Observational
Estimated Enrollment : 48 participants
Observational Model: Case-Crossover
Time Perspective: Prospective
Official Title: Free Fatty Acids: Threshold Repeatability Study
Study Start Date : March 2012
Actual Primary Completion Date : November 2013
Actual Study Completion Date : November 2013

Primary Outcome Measures :
  1. Non-esterified fatty acid detection thresholds in humans [ Time Frame: 6 months ]
  2. BMI [ Time Frame: Baseline ]

Secondary Outcome Measures :
  1. Habitual fat intake [ Time Frame: Baseline ]
    Block Rapid Dietary Fat Screener will be used as well as the ASA-24.

  2. testing method [ Time Frame: 6 months ]
    Comparison of time to maximum sensitivity by participants based on forced-choice versus staircase stimulus presentation techniques.

  3. hunger [ Time Frame: each visit ]
    Visual analog scale

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
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.

Inclusion Criteria:

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

Exclusion Criteria:

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01550120

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United States, Indiana
Purdue University
West Lafayette, Indiana, United States, 47907
Sponsors and Collaborators
Purdue University
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Principal Investigator: Richard D Mattes, PhD Purdue University
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Responsible Party: Richard Mattes, Distinguished Professor, Purdue University Identifier: NCT01550120    
Other Study ID Numbers: 055-027
First Posted: March 9, 2012    Key Record Dates
Last Update Posted: November 25, 2013
Last Verified: March 2013
Keywords provided by Richard Mattes, Purdue University: