Cognition Intervention Study Dortmund- Glycemic Index (CogniDo GI) (CogniDo-GI)
調査の概要
詳細な説明
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.
研究の種類
入学 (予想される)
段階
- 適用できない
連絡先と場所
研究場所
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Dortmund、ドイツ、44225
- 募集
- Germany Research Institute of Child Nutrition
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コンタクト：
- Mathilde Kersting, Professor
- 電話番号：023179221018
- メール：kersting@fke-do.de
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
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
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 割り当て：ランダム化
- 介入モデル：クロスオーバー割り当て
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的：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.
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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.
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実験的：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.
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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.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Shifting: Change of total reaction time for a) [ms]
時間枠：participants were tested on two test days (T1 and T2) with one week wash out
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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
時間枠：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
時間枠：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
|
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updating: change of ratio of missing [%]
時間枠：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.
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participants were tested on two test days (T1 and T2) with one week wash out
|
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updating: change of ratio of false alarms [%]
時間枠：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]
時間枠：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]
時間枠：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
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participants were tested on two test days (T1 and T2) with one week wash out
|
|
tonic alertness: change of deviation of reaction time [ms]
時間枠：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]
時間枠：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.
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participants were tested on two test days (T1 and T2) with one week wash out
|
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tonic alertness:change of numbers of commission errors [n]
時間枠：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.
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participants were tested on two test days (T1 and T2) with one week wash out
|
協力者と研究者
捜査官
- スタディチェア：Mathilde Kersting, Prof、Research Institut of Child Nutrition
研究記録日
主要日程の研究
研究開始
一次修了 (予想される)
研究の完了 (予想される)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
その他の研究ID番号
- COG0416DO
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