An interventional study of Having lunch/skipping lunch and Skipping lunch/having lunch in Cognitive Function, sponsored by Research Institute of Child Nutrition, Dortmund. Completed at 1 site in Germany. Open to participants aged 10 Years to 14 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-04-29.
Sponsored by Research Institute of Child Nutrition, Dortmund · Not applicable and Interventional
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 present Coco study connect 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.
Because of cerebral particularities, children may react highly sensitive to variations of nutrient 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. However, the number of 'meal skippers' is increasing among children and adolescents. Thus, the effect of skipping lunch at school on cognitive functioning is examined in this experimental cross-over trial. 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. either lunch (control) or water as a beverage (intervention of 'skipping meal'), 12.45 p.m. to 1.15 p.m. regular lunch break, 1.15 p.m. to 14.10 p.m. regular school lesson. 14.15 p.m. computerized tests of executive cognitive and basal (alertness) functioning, 3 p.m. lunch for the 'skipping meal'-group. 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.
Research Institute of Child Nutrition, Dortmund is the lead sponsor of 7 studies on the registry; none are open to participants now.
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Exclusion Criteria:
Lunch ad libitum on test day 1 and no lunch on test day 2. Water at libitum was constantly available on both days.
Other: Having lunch/skipping lunch
no lunch on test day 1 and lunch ad libitum on test day 2. Water at libitum was constantly available on both days.
Other: Skipping lunch/having lunch
Lunch ad libitum on test day 1 and no lunch on test day 2. Water at libitum was constantly available on both days.
No lunch on test day 1 and lunch ad libitum on test day 2. Water at libitum was constantly available on both days.
Shifting: Change of total reaction time for a) [ms]
Measuring global task-switching costs by a three-part computer trial. 1. Non-switch: digits from 1 to 26 in random order are to put in order. 2. Non-switch: Same as a) with letters from A to Z 3. switch: digits 1 to 13 and letters A to M in random order to put in altering ascending order (digit, letter)
Time frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
Shifting: Change of total reaction time for b) [ms]
Measuring global task-switching costs by a three-part computer trial. 1. Non-switch: digits from 1 to 26 in random order are to put in order. 2. Non-switch: Same as a) with letters from A to Z 3. switch: digits 1 to 13 and letters A to M in random order to put in altering ascending order (digit, letter)
Time frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
Shifting: Change of total switch-costs [ms]
Measuring global task-switching costs by a three-part computer trial. 1. Non-switch: digits from 1 to 26 in random order are to put in order. 2. Non-switch: Same as a) with letters from A to Z 3. switch: digits 1 to 13 and letters A to M in random order to put in altering ascending order (digit, letter)
Time frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
updating: change of ratio of missing [%]
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.
Time frame: Time Frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
updating: change of ratio of false alarms [%]
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.
Time frame: Time Frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
updating: change of mean reaction time [ms]
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.
Time frame: Time Frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
tonic alertness: change of mean reaction time [ms]
measures the level of alertness in response to a simple visual stimulus. Mean reaction time and the deviation of reaction time; subsidiary outcomes are the numbers of omission and commission errors.
Time frame: Time Frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
tonic alertness: change of deviation of reaction time [ms]
measures the level of alertness in response to a simple visual stimulus. Mean reaction time and the deviation of reaction time; subsidiary outcomes are the numbers of omission and commission errors.
Time frame: Time Frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
tonic alertness:change of numbers of omission and commission errors [n]
measures the level of alertness in response to a simple visual stimulus. Mean reaction time and the deviation of reaction time; subsidiary outcomes are the numbers of omission and commission errors.
Time frame: Time Frame: Participants were tested twice with one week wash out (1h after having/skipping lunch)
The record gives a start of Oct 2014, a primary completion of Mar 2015 and a completion of Mar 2015. It does not say whether these dates are actual or estimated.
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This study is completed, as verified in May 2015. You cannot join it, but the record below documents what was studied.
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Research Institute of Child Nutrition, Dortmund