Effects of Docosahexaenoic Acid (DHA) on Cognitive Function in Children 4 Years of Age
|First Received Date ICMJE||July 11, 2006|
|Last Updated Date||October 7, 2008|
|Start Date ICMJE||May 2006|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE
|Original Primary Outcome Measures ICMJE||Not Provided|
|Change History||Complete list of historical versions of study NCT00351624 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE
|Original Secondary Outcome Measures ICMJE||Not Provided|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||Effects of Docosahexaenoic Acid (DHA) on Cognitive Function in Children 4 Years of Age|
|Official Title ICMJE||A Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Effects of DHA on Cognitive Functions in Preschool Children|
The primary objective of this study is to determine whether a 4-month period of supplementation with 400 mg/day of docosahexaenoic acid (DHA) provided from chewable softgel capsules containing bubblegum flavored microalgal oil (DHASCO-S) versus placebo improves one or more cognitive measures of attention, memory, processing speed, and error rate in healthy children 4 years of age.
The secondary objectives are to measure the safety and tolerability of the DHA dose administered and to measure blood DHA levels before and after supplementation.
DHA is the primary omega-3 fatty acid present in the brain and retina and plays crucial structural and functional roles in these issues. The primary dietary source of DHA is fatty fish (e.g., salmon, herring, tuna). The American diet provides one of the lowest levels of omega-3 fatty acids of most industrialized nations. Children between the ages of 1 and 5 years consume only 30 to 50 mg DHA per day despite high requirements for this nutrient to support growth and tissue turnover.
Studies with human infants have reported visual and cognitive benefits of DHA supplementation in early life. Reported benefits include significant improvements on tests of visual acuity during infancy, psychomotor or mental development in the first two years of life, and problem-solving and sustained attention around 5 years of age.
Few studies have evaluated the effect that DHA supplementation has on the cognitive function of older children. Studies that considered DHA supplementation in children 4-12 years of age with attention-deficit/hyperactivity disorder (ADHD) or other developmental disorders have shown improvements on several measures of attention, behavior, and executive function.
Given the estimated high requirements of DHA to support growth and maintenance of the brain, the low consumption of DHA by American children, and the evidence from human and animal studies that DHA status affects the functional capacity of the central nervous system, there is a reasonable expectation that DHA supplementation administered to preschool-aged children will improve performance on tests of attention, memory, processing speed, and error rate.
|Study Type ICMJE||Interventional|
|Study Phase||Phase 3|
|Study Design ICMJE||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Primary Purpose: Treatment
|Intervention ICMJE||Behavioral: DHA dietary supplementation|
|Study Arm (s)||Not Provided|
|Publications *||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Completion Date||September 2007|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
|Ages||4 Years to 4 Years|
|Accepts Healthy Volunteers||Yes|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Location Countries ICMJE||United States|
|NCT Number ICMJE||NCT00351624|
|Other Study ID Numbers ICMJE||Martek #2006-1008|
|Has Data Monitoring Committee||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor ICMJE||Martek Biosciences Corporation|
|Collaborators ICMJE||Not Provided|
|Information Provided By||Martek Biosciences Corporation|
|Verification Date||October 2008|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP