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

3 mai 2016 mis à jour par: 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.

Aperçu de l'étude

Statut

Inconnue

Les conditions

Intervention / Traitement

Description détaillée

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.

Type d'étude

Interventionnel

Inscription (Anticipé)

200

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

  • Allemagne
      • Dortmund, Allemagne, 44225
        • Recrutement
        • Germany Research Institute of Child Nutrition
        • Contact:
          • Mathilde Kersting, Professor
          • Numéro de téléphone: 023179221018
          • E-mail: kersting@fke-do.de

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

10 ans à 14 ans (Enfant)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

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

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Répartition: Randomisé
  • Modèle interventionnel: Affectation croisée
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: 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.
Autre: 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.
Expérimental: 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.
Autre: 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.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Shifting: Change of total reaction time for a) [ms]
Délai: 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
Délai: 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
Délai: 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 [%]
Délai: 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 [%]
Délai: 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]
Délai: 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]
Délai: 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]
Délai: 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]
Délai: 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]
Délai: 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

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Research Institute of Child Nutrition, Dortmund

Les enquêteurs

  • Chaise d'étude: Mathilde Kersting, Prof, Research Institut of Child Nutrition

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude

1 avril 2016

Achèvement primaire (Anticipé)

1 juin 2016

Achèvement de l'étude (Anticipé)

1 décembre 2016

Dates d'inscription aux études

Première soumission

28 avril 2016

Première soumission répondant aux critères de contrôle qualité

3 mai 2016

Première publication (Estimation)

5 mai 2016

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Estimation)

5 mai 2016

Dernière mise à jour soumise répondant aux critères de contrôle qualité

3 mai 2016

Dernière vérification

1 mai 2016

Plus d'information

Termes liés à cette étude

Mots clés

Autres numéros d'identification d'étude

  • COG0416DO

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

Non

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

produit fabriqué et exporté des États-Unis.

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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