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

3. maj 2016 opdateret af: 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.

Studieoversigt

Status

Ukendt

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

200

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Tyskland
      • Dortmund, Tyskland, 44225
        • Rekruttering
        • Germany Research Institute of Child Nutrition
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

10 år til 14 år (Barn)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

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

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: 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.
Andet: 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.
Eksperimentel: 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.
Andet: 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.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Shifting: Change of total reaction time for a) [ms]
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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 [%]
Tidsramme: 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 [%]
Tidsramme: 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]
Tidsramme: 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]
Tidsramme: 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]
Tidsramme: 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]
Tidsramme: 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]
Tidsramme: 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

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Research Institute of Child Nutrition, Dortmund

Efterforskere

  • Studiestol: Mathilde Kersting, Prof, Research Institut of Child Nutrition

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. april 2016

Primær færdiggørelse (Forventet)

1. juni 2016

Studieafslutning (Forventet)

1. december 2016

Datoer for studieregistrering

Først indsendt

28. april 2016

Først indsendt, der opfyldte QC-kriterier

3. maj 2016

Først opslået (Skøn)

5. maj 2016

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

5. maj 2016

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

3. maj 2016

Sidst verificeret

1. maj 2016

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • COG0416DO

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Kliniske forsøg med Kognitiv funktion

Kliniske forsøg med Dietary: high GI lunch

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