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.
Studieoversigt
Status
Betingelser
Intervention / Behandling
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Leuven, Belgien, 3000
- University Hospitals Leuven, Campus Gasthuisberg
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
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
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Enkelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
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Eksperimentel: Lauric acid
the nutrient that can be widely found in daily food.
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Intragastric infusion of nutrient that can be widely found in daily food or placebo.
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Eksperimentel: Palmitic acid
the nutrient that can be widely found in daily food.
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Intragastric infusion of nutrient that can be widely found in daily food or placebo.
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Eksperimentel: Capric acid
the nutrient that can be widely found in daily food.
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Intragastric infusion of nutrient that can be widely found in daily food or placebo.
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Placebo komparator: Saline
physiological salt water
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Intragastric infusion of nutrient that can be widely found in daily food or placebo.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
trial making task
Tidsramme: 60 min after intervention
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Participants will be required to connect a set of 25 numbered dots in numerical order as fast as possible while still maintaining accuracy.
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60 min after intervention
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digital span task
Tidsramme: 60 min after intervention
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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.
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60 min after intervention
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memory task
Tidsramme: 60 min after intervention
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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.
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60 min after intervention
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Samarbejdspartnere og efterforskere
Samarbejdspartnere
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Andre undersøgelses-id-numre
- S56123
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Kliniske forsøg med intragastric infusion of nutrient
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University Health Network, TorontoAfsluttet