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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT01507012
Registration number
NCT01507012
Ethics application status
Date submitted
20/09/2011
Date registered
10/01/2012
Date last updated
10/01/2012
Titles & IDs
Public title
The Effect Of Berry Polyphenols On Human Behaviour
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Scientific title
A Double Blind, Placebo Controlled Study Measuring The Effect Of Berry Polyphenols On Mood And Cognition In Healthy Adults
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Secondary ID [1]
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28AI1
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Healthy
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Condition category
Condition code
Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Other - Placebo
Experimental: Powdered berryfruit extract - Powdered berry extract containing 500mg of polyphenols
Placebo comparator: Placebo -
Experimental: Berryfruit juice - Berryfruit juice containing 500mg polyphenols
Treatment: Other: Placebo
Placebo control containing sugar and artificial flavouring.
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Intervention code [1]
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Treatment: Other
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Change from Baseline Attention and vigilance
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Assessment method [1]
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Attention and vigilance will be measured at baseline ad then 1 hour post supplementation of the study treatment. at baseline the digit vigilance task, stroop task and RVIP task will be completed. One hour post supplementation of the study treatment, 7 sets of digit vigilance, stroop and RVIP will be completed. The outcome measures will be treated as change from baseline scores.
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Timepoint [1]
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baseline, 1 hour post dose then incrementally every 10 minutes for 70 minutes.
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Primary outcome [2]
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Change from baseline blood platelet monoamine oxidase-B activity
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Assessment method [2]
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Timepoint [2]
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Baseline and 150 minutes post dose
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Primary outcome [3]
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Change from baseline visual analogue scale fatigue
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Assessment method [3]
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Timepoint [3]
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baseline, 1 hour post dose then incrementally every 10 minutes for 70 minutes.
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Primary outcome [4]
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Change from baseline blood glucose mmol/L
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Assessment method [4]
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Timepoint [4]
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Baseline, 60 minutes post dose and 150 minutes post dose
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Primary outcome [5]
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Change from baseline blood plasma anthocyanin levels
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Assessment method [5]
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Timepoint [5]
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Baseline and 150 minutes post supplementation
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Primary outcome [6]
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Change from baseline visual analogue scale difficulty
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Assessment method [6]
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Timepoint [6]
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baseline, 1 hour post dose then incrementally every 10 minutes for 70 minutes.
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Primary outcome [7]
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Change from baseline Bond Lader mood scales
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Assessment method [7]
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Timepoint [7]
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Baseline, 60 minutes and 1 hour 50 minutes post dose
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Primary outcome [8]
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Change from baseline diastolic blood pressure
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Assessment method [8]
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Timepoint [8]
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Baseline, 60 minutes and 150 minutes
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Primary outcome [9]
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Change from baseline systolic blood pressure
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Assessment method [9]
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Timepoint [9]
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Baseline, 60 minutes and 150 minutes post supplementation
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Primary outcome [10]
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Change from baseline logical reasoning
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Assessment method [10]
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Timepoint [10]
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Baseline and 150 minutes post supplementation
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Eligibility
Key inclusion criteria
* MMale/female,
* Healthy Age 18-35 years old
* Non smoker
* Proficient in English
* Not taking any herbal or prescription medications
* Not pregnant or seeking to become pregnant, BMI < 30kg/m2
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Minimum age
18
Years
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Maximum age
35
Years
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
* Tobacco user,
* pregnant or seeking to become pregnant,
* currently taking recreational over the counter/prescription medication (excluding the contraceptive pill) and/or dietary/herbal supplements.
* Food allergies or sensitivities that are relevant to the study,
* learning difficulties,
* ADHD,
* dyslexia,
* migraines or
* any gastric problems
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Study design
Purpose of the study
Other
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people analysing the results/data
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Intervention assignment
Crossover
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/09/2010
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/02/2011
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Sample size
Target
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Accrual to date
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Final
36
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Recruitment in Australia
Recruitment state(s)
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Recruitment outside Australia
Country [1]
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New Zealand
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State/province [1]
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Auckland
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Funding & Sponsors
Primary sponsor type
Other
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Name
Northumbria University
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Address
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Country
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Other collaborator category [1]
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Other
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Name [1]
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The New Zealand Institute for Plant and Food Research
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Address [1]
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Country [1]
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Ethics approval
Ethics application status
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Summary
Brief summary
Polyphenols, compounds found at high levels in berry fruit, have been shown to have health promoting benefits through various mechanisms both in vivo and in vitro. These benefits include antioxidant activity, anti-inflammatory properties, and monoamine oxidase (MAO) inhibition. This study aims to expand on the extremely promising animal data in the literature, and our own pilot study results, to investigate whether drinks containing berry fruit can improve cognitive performance and mood in healthy human participants. Our central hypothesis is that fruit extracts can reduce the breakdown of neurotransmitters such as dopamine and serotonin. This reduction in breakdown could therefore increase the levels of these neurotransmitters and convey some benefits in regards to mood and cognitive function. The investigators will assess the pharmacokinetic activity of berry fruit extracts on MAO activity to test this hypothesis. A second hypothesis is that berryfruit polyphenols may alter circulating levels of glucose that may in turn affect cognitive performance and mood. A prior study carried out by Plant \& Food Research through collaboration with the University of Northumbria, UK, found promising results after acutely supplementing participants with a berry fruit based drink. This study aims to use the results from the previous study to assess in depth the effect of berry fruit drinks on human behaviour.
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Trial website
https://clinicaltrials.gov/study/NCT01507012
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Anthony W Watson
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Address
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Northumbria University
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT01507012
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