Effects of Fish-oil on Mood and Cognitive Functions of Healthy Individuals
The investigators recently found a positive effect of omega-3 supplements on cognitive function in healthy individuals after 4 weeks (J of Psychopharmacology 2009, 23: 831-840). The investigators hypothesize that 4 weeks consumption of omega-3 supplements in previously depressed individuals will positively affect their cognitive functions.
Secondly, low Heart Rate Variability (HRV) is a risk factor for cardiovascular disease. Some studies have found low HRV in patients with depression. No studies have investigated the effects of omega-3 fatty acid supplements on Heart Rate Variability in individuals with a history of depression. The investigators will test the hypotheses that omega-3 supplements lead to an improvement of heart rate variability indices in healthy volunteers with a history of depression.
|Depression||Dietary Supplement: omega-3 fatty acids supplements (fish oil) Dietary Supplement: Placebo|
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||The Effects of Omega-3 Fatty Acids Dietary Supplements (Fish-oil) on Mood and Cognitive Functions of Healthy Individuals|
- Cognition [ Time Frame: 4 weeks ]Battery of test measuring emotional and neutral information processing. Largest effect expected on Decision Making Test (cf. Antypa et al., 2009) and Emotion Recognition Test.
- Heart Rate Variability [ Time Frame: 4 weeks ]
- Mood states [ Time Frame: 4 weeks ]
Fatigue, Anger, Tension, Anxiety, Vigor (Profile of Mood States, self-report measure).
|Study Start Date:||September 2008|
|Study Completion Date:||September 2010|
|Primary Completion Date:||September 2010 (Final data collection date for primary outcome measure)|
Dietary Supplement: omega-3 fatty acids supplements (fish oil)
1.74g eicosapentaenoic acid (EPA) and 0.25g docosahexaenoic acid (DHA)
Placebo Comparator: Placebo
Olive oil capsules, identical in appearance to fish oil capsules
Dietary Supplement: Placebo
softgel capsules (identical in appearance to fish oil capsules) containing olive oil. 3 capsules/day, 4 weeks
Please refer to this study by its ClinicalTrials.gov identifier: NCT01104194
|Leiden, ZH, Netherlands, 2333 AK|