The Effects of Intragastric Administration of Nutrients on Executive Control in Healthy Subjects.

September 7, 2017 updated by: Universitaire Ziekenhuizen KU Leuven

The previous research by one of our members in the research team (H. Miller) suggests a possible influence of oral nutrients intake of certain fat or carbohydrates (glucose, fructose) on executive control. On the other hand, another previous study from our group (L. Van Oudenhove) suggests a subliminal influence of intragastric administration of fatty acids on subjective and neural responses to negative emotion induction. The purpose of this study therefore is to examine the effect of intragastric administration of certain fatty acids and carbohydrates on executive control in healthy volunteers.

Therefore one group of healthy volunteers are invited to the study. The participants will be randomly administered one of the three fatty acid emulsions or placebo via a nasogastric tube in each of the visits. After the exposure period, participants will use a computer to perform there different tasks to measure executive control. During each study visit, regular measurements of emotion, physical sensations, as well as blood glucose will be assessed. Furthermore, an electrocardiogram will be continuously recorded for the calculation of vagal function.

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.

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.
26

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

  • Belgium
      • Leuven, Belgium, 3000
        • University Hospitals Leuven, Campus Gasthuisberg

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

17 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • N = 26 These numbers are based on a power calculation for a repeated measures ANOVA with one within-subject factor using Gpower software version 3.1.7 (http://www.psycho.uni-duesseldorf.de/abteilungen/aap/gpower3), indicating that these sample sizes are needed to achieve 90% power to detect a medium-sized effect (f = 0.25).
  • Men & women
  • Age: >17 years
  • 20 ≤ BMI ≤ 25
  • Of good mental and physical health

Exclusion Criteria:

Participants with one or more of self-reported points below will be excluded:

  1. History of, or current presence of:

    • Psychiatric disorders (e.g., anxiety disorders, somatization disorder, eating disorders, depression, substance-related disorders alcohol abuse or dependence etc.)
    • Abnormal eating behavior (including restraint and emotional eating)
    • Abdominal/thoracic surgery
    • Neurological, endocrine or digestive related disorders
    • Head trauma with loss of consciousness
    • Other serious medical conditions
    • Use of any drugs, including cannabis, during the past 6 months

  2. Current presence of:

    • Pregnancy
    • Medication use that affects the function of the gastrointestinal tract and/or affects the nervous system, psychotropics or painkillers
    • A recent accident or surgery that has not fully recovered

  3. Other

    • Smoking
    • Women not taking hormonal contraception

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: Crossover Assignment
  • Masking: Single

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: Lauric acid
the nutrient that can be widely found in daily food.
Dietary supplement: intragastric infusion of nutrient
Intragastric infusion of nutrient that can be widely found in daily food or placebo.
Experimental: Palmitic acid
the nutrient that can be widely found in daily food.
Dietary supplement: intragastric infusion of nutrient
Intragastric infusion of nutrient that can be widely found in daily food or placebo.
Experimental: Capric acid
the nutrient that can be widely found in daily food.
Dietary supplement: intragastric infusion of nutrient
Intragastric infusion of nutrient that can be widely found in daily food or placebo.
Placebo Comparator: Saline
physiological salt water
Dietary supplement: intragastric infusion of nutrient
Intragastric infusion of nutrient that can be widely found in daily food or placebo.

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
trial making task
Time Frame: 60 min after intervention
Participants will be required to connect a set of 25 numbered dots in numerical order as fast as possible while still maintaining accuracy.
60 min after intervention
digital span task
Time Frame: 60 min after intervention
Participants will be presented with a series of single-digit numbers and required to remember them. After the series has been presented the participants will need to indicate the numbers presented.
60 min after intervention
memory task
Time Frame: 60 min after intervention
A list of 15 words that are matched for frequency, concreteness, and imagery will be presented to the participant via a computer monitor at the rate of one every 2 sec. Afterwards they will be given 60 sec to write down as many words as they are able to recall from the list. Accuracy and errors will be recorded.
60 min after intervention

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.
Universitaire Ziekenhuizen KU Leuven

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.
KU Leuven

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.
May 25, 2015

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.
June 27, 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.
June 27, 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).
June 6, 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.
June 9, 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.
June 15, 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.
September 11, 2017

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.
September 7, 2017

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.
November 1, 2016

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.
  • S56123

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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