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Cognition Intervention Study Dortmund- Glycemic Index (CogniDo GI) (CogniDo-GI)

3 mei 2016 bijgewerkt door: Research Institute of Child Nutrition, Dortmund
The Cognition Intervention Study Dortmund (CogniDo) and the Cognition Intervention Study Dortmund PLUS (CogniDo PLUS) investigated the short-term effects of having school lunch versus skipping it on children's basal (CogniDo) and executive (CogniDo PLUS) cognitive functions in the afternoon. The The Cognition Intervention Study Dortmund Continued (Coco) connected this two previous studies and investigates the effect of having school lunch versus skipping it on children's basal and executive cognitive functions later in the afternoon. The present study the Cognition Intervention Study Dortmund- Glycemic Index (CogniDo GI) examines the influence of the gylcemic index of lunch on cognitive performance of school children in the afternoon.

Studie Overzicht

Toestand

Onbekend

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Glucose is the main fuel of the human brain. However, which impact the glycemic index of lunch has on cognitive performance is not clear. A recently published review by Philippou and Constantinou suggested cautiously that a low-GI meal may favor cognitive functions in adults, but note that their findings are inconclusive due to differences in study design, study sample (e.g. size, age), time of testing and the cognitive domain being examined. Because of cerebral particularities, children may react highly sensitive to variations of glycose supply. Therefore, an optimised composition of meals at favourable mealtime should be considered for optimal cognitive performance. The increasing implementation of all-day schools in Germany requires the children's catering for lunch at school.

As prior intake of food can have an influence on the physiological effect of test meal, the children's dietary intake in the mid-morning is standardized. The intervention is integrated in everyday school life: 9.15 a.m. standardized snack within the frame of the regular break, 9.45 a.m. to 12.25 p.m. everyday school life, 12.25 p.m. lunch with a high GI-rice or a low GI-rice and a water beverage, 12.45 p.m. to 13.15 p.m. regular lunch break, 13.15 p.m. computerized tests of executive cognitive and basal (alertness) functioning.

Parameters of cognition with relevance to everyday school life are measured by a computerized test program developed by the Institute of Working Learning and Aging (ALA). Usual eating behaviour, sleep behaviour, physical activity and parental education were determined as control variables by questionnaires for children, parents.

Studietype

Ingrijpend

Inschrijving (Verwacht)

200

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

  • Duitsland
      • Dortmund, Duitsland, 44225
        • Werving
        • Germany Research Institute of Child Nutrition
        • Contact:

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

10 jaar tot 14 jaar (Kind)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  • all fifth and sixth grade students of Gesamtschule Berger Feld with the consent of parents and child

Exclusion Criteria:

  • Metabolic diseases or special diet

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Crossover-opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Dietary: high GI lunch
High GI-rice lunch ad libitum on test day 1 and low GI-rice lunch on test day 2. Water at libitum was constantly available on both days.
Ander: Dietary: high GI lunch
High GI: High-GI rice lunch ad libitum on test day 1 and low GI-rice lunch on test day 2. Water at libitum was constantly available on both days.
Experimenteel: Dietary: low GI lunch
Low GI-rice lunch ad libitum on test day 1 and high GI-rice lunch on test day 2. Water at libitum was constantly available on both days.
Ander: Dietary: low GI lunch
Low-GI: Low GI-rice lunch ad libitum on test day 1 and high GI-rice lunch on test day 2. Water at libitum was constantly available on both days.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Shifting: Change of total reaction time for a) [ms]
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out

Measuring global task-switching costs by a three-part computer trial.

a. Non-switch: digits from 1 to 26 in random order are to put in order. b. Non-switch: Same as a) with letters from A to Z c. switch: digits 1 to 13 and letters A to M in random order to put in altering ascending order (digit, letter)
participants were tested on two test days (T1 and T2) with one week wash out
Shifting: Change of total reaction time for b) [ms
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out

Measuring global task-switching costs by a three-part computer trial.

a. Non-switch: digits from 1 to 26 in random order are to put in order. b. Non-switch: Same as a) with letters from A to Z c. switch: digits 1 to 13 and letters A to M in random order to put in altering ascending order (digit, letter)
participants were tested on two test days (T1 and T2) with one week wash out
Shifting: Change of total switch-costs [ms
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out

Measuring global task-switching costs by a three-part computer trial.

a. Non-switch: digits from 1 to 26 in random order are to put in order. b. Non-switch: Same as a) with letters from A to Z c. switch: digits 1 to 13 and letters A to M in random order to put in altering ascending order (digit, letter)
participants were tested on two test days (T1 and T2) with one week wash out
updating: change of ratio of missing [%]
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out
Continuous monitoring and quick addition or deletion of contents within the working memory A sequence of 106 items (pictures of fruit and vegetables) is shown to the participants. A reaction is required if the actual shown item was equal to the item shown in the second to last.
participants were tested on two test days (T1 and T2) with one week wash out
updating: change of ratio of false alarms [%]
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out
Continuous monitoring and quick addition or deletion of contents within the working memory A sequence of 106 items (pictures of fruit and vegetables) is shown to the participants. A reaction is required if the actual shown item was equal to the item shown in the second to last.
participants were tested on two test days (T1 and T2) with one week wash out
updating: change of mean reaction time [ms]
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out
Continuous monitoring and quick addition or deletion of contents within the working memory A sequence of 106 items (pictures of fruit and vegetables) is shown to the participants. A reaction is required if the actual shown item was equal to the item shown in the second to last.
participants were tested on two test days (T1 and T2) with one week wash out
tonic alertness: change of mean reaction time [ms]
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out
measures the level of alertness in response to a simple visual stimulus. Mean reaction time
participants were tested on two test days (T1 and T2) with one week wash out
tonic alertness: change of deviation of reaction time [ms]
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out
measures the level of alertness in response to a simple visual stimulus. Deviation of reaction time
participants were tested on two test days (T1 and T2) with one week wash out
tonic alertness:change of numbers of omission errors [n]
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out
measures the level of alertness in response to a simple visual stimulus. subsidiary outcome is the numbers of omission errors.
participants were tested on two test days (T1 and T2) with one week wash out
tonic alertness:change of numbers of commission errors [n]
Tijdsspanne: participants were tested on two test days (T1 and T2) with one week wash out
measures the level of alertness in response to a simple visual stimulus. subsidiary outcome is the numbers of comission errors.
participants were tested on two test days (T1 and T2) with one week wash out

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Research Institute of Child Nutrition, Dortmund

Onderzoekers

  • Studie stoel: Mathilde Kersting, Prof, Research Institut of Child Nutrition

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start

1 april 2016

Primaire voltooiing (Verwacht)

1 juni 2016

Studie voltooiing (Verwacht)

1 december 2016

Studieregistratiedata

Eerst ingediend

28 april 2016

Eerst ingediend dat voldeed aan de QC-criteria

3 mei 2016

Eerst geplaatst (Schatting)

5 mei 2016

Updates van studierecords

Laatste update geplaatst (Schatting)

5 mei 2016

Laatste update ingediend die voldeed aan QC-criteria

3 mei 2016

Laatst geverifieerd

1 mei 2016

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Andere studie-ID-nummers

  • COG0416DO

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

Nee

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

product vervaardigd in en geëxporteerd uit de V.S.

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

Klinische onderzoeken op Cognitieve functie

Klinische onderzoeken op Dietary: high GI lunch

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