Orange Juice Consumption and Cognitive Function (OJOC)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01312610
Recruitment Status : Completed
First Posted : March 10, 2011
Last Update Posted : November 23, 2011
Information provided by (Responsible Party):
Jeremy Paul Edward Spencer, University of Reading

Brief Summary:
This study is investigating the effect of 8 weeks of orange juice supplementation on executive function in healthy older adults. The study is a controled, double-blind, crossover trial and involves a 8 week supplementation with a high flavonone orange juice and a carbohydrate-matched control. Volunteers consume 500ml of either the test juice or the control juice per day for an 8 week period. There is then an 8 week washout period before subjects proceed to the other arm of the study. Subjects are randomly assigned to either arm at the beginning of the study. Measures of cognitive function will be administered pre and post both test and control interventions. Blood pressure will also be measured and blood and urine samples will be collected to assess absorption of from the juice. A sub-sample of volunteers will undergo MRI imaging pre- and post intervention to acquire cerebral blow flow information.

Condition or disease Intervention/treatment Phase
Nerve Degeneration Dietary Supplement: High flavanone orange juice Dietary Supplement: Control orange juice Not Applicable

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 40 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single (Participant)
Primary Purpose: Basic Science
Official Title: Effect of Chronic Orange Juice Consumption on Cognitive Function in Healthy Older Adults
Study Start Date : September 2010
Actual Primary Completion Date : August 2011
Actual Study Completion Date : September 2011

Arm Intervention/treatment
Experimental: High flavonone orange juice drink Dietary Supplement: High flavanone orange juice
High flavonone orange juice drink.
Other Name: Frozen Orange Juice; Department of Citrus, Florida, USA.

Placebo Comparator: Control orange juice drink
Juice drink matched for sugar content
Dietary Supplement: Control orange juice
Orange beverage, low flavanone content, matched for total carbohydrate content, individual sugar profile, vitamin C

Primary Outcome Measures :
  1. Executive function - Attention [ Time Frame: change in attention from baseline and 8 weeks ]
    Assessment by human cognitive test battery delivered by computer and human operator. Assessments will be carried out at baseline and at the end of each intervention arm.

Secondary Outcome Measures :
  1. Plasma flavanones [ Time Frame: change from baseline to 8 weeks ]
    By High performance liquid chromatography

  2. Blood pressure [ Time Frame: change from baseline to 8 weeks ]
    Blood pressure measurement

Information from the National Library of Medicine

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Ages Eligible for Study:   60 Years to 75 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • In good general health i.e. no major health condition such as diabetes
  • BMI < 30
  • Cholesterol < 6 and BP < 150/90
  • Not on blood pressure medication or blood thinning medication such as aspirin - No learning difficulty such as dyslexia

Exclusion Criteria:

  • Diabetes
  • Gastro-intestinal disease
  • High BMI
  • Cholesterol and BP
  • Smoker
  • On blood pressure medication or blood thinning medication such as aspirin
  • Dyslexic/dyspraxic
  • Depression or history of depression

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01312610

United Kingdom
University of Reading
Reading, Berkshire, United Kingdom, RG6 6AH.
Sponsors and Collaborators
University of Reading
Principal Investigator: Jeremy PE Spencer, PhD University of Reading
Principal Investigator: Laurie T. Butler, PhD University of Reading

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Jeremy Paul Edward Spencer, Professor Jeremy Spencer, University of Reading Identifier: NCT01312610     History of Changes
Other Study ID Numbers: UReading_2010_OJOC
First Posted: March 10, 2011    Key Record Dates
Last Update Posted: November 23, 2011
Last Verified: November 2011

Keywords provided by Jeremy Paul Edward Spencer, University of Reading:
orange juice
cognitive function

Additional relevant MeSH terms:
Nerve Degeneration
Pathologic Processes