- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02800538
The Effects of Intragastric Administration of Nutrients on Executive Control in Healthy Subjects.
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
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Leuven, Belgium, 3000
- University Hospitals Leuven, Campus Gasthuisberg
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
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:
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
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
Other
- Smoking
- Women not taking hormonal contraception
Study Plan
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 |
Intervention / Treatment |
---|---|
Experimental: Lauric acid
the nutrient that can be widely found in daily food.
|
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.
|
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.
|
Intragastric infusion of nutrient that can be widely found in daily food or placebo.
|
Placebo Comparator: Saline
physiological salt water
|
Intragastric infusion of nutrient that can be widely found in daily food or placebo.
|
What is the study measuring?
Primary Outcome Measures
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
Collaborators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID 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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