Cognition Intervention Study Dortmund- Glycemic Index (CogniDo GI) (CogniDo-GI)
研究概览
详细说明
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.
研究类型
注册 (预期的)
阶段
- 不适用
联系人和位置
学习联系方式
- 姓名：Mathilde Kersting, Prof
- 电话号码：023179221018
- 邮箱：kersting@fke-do.de
学习地点
-
-
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Dortmund、德国、44225
- 招聘中
- Germany Research Institute of Child Nutrition
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接触：
- Mathilde Kersting, Professor
- 电话号码：023179221018
- 邮箱：kersting@fke-do.de
-
-
参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
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
学习计划
研究是如何设计的？
设计细节
- 分配：随机化
- 介入模型：交叉作业
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：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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实验性的：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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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Shifting: Change of total reaction time for a) [ms]
大体时间：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
大体时间：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
大体时间：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 [%]
大体时间：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
|
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updating: change of ratio of false alarms [%]
大体时间：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]
大体时间：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]
大体时间：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]
大体时间：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]
大体时间：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
|
|
tonic alertness:change of numbers of commission errors [n]
大体时间：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
|
合作者和调查者
调查人员
- 学习椅：Mathilde Kersting, Prof、Research Institut of Child Nutrition
研究记录日期
研究主要日期
学习开始
初级完成 (预期的)
研究完成 (预期的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
与本研究相关的术语
其他研究编号
- COG0416DO
计划个人参与者数据 (IPD)
计划共享个人参与者数据 (IPD)？
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