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HealthyBIOFAVNCT01591057

Effect of Fruit and Vegetable Intake on Markers of Fruit and Vegetable Consumption

A study testing 2 portions of fruit and vegetables per day, 5 portions of fruit and vegetables per day and 8 portions of fruit and vegetables per day in people with Healthy, run by Queen's University, Belfast at 1 site in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study will examine what contribution of 'markers' of fruit and vegetable (FV) intake in blood and urine is most closely related to FV intake. 30 healthy volunteers will be fed either 2, 5 or 8 portions of FV per day for 4 weeks (ten participants per group, randomly assigned). Read more about this study

Who is it for?
Ages 18 to 65 yearsHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
2 portions of fruit and vegetables per day, 5 portions of fruit and vegetables per day and 8 portions of fruit and vegetables per day
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
1 siteUnited Kingdom
Study dates
Jun 2011to Nov 2012
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • 18-65 years
  • Usual consumption of fruit and vegetables <= 2 portions/day

Who cannot join

  • Use of any high dose vitamin, mineral or dietary supplements
  • Current smoker
  • BMI > 35 kg/m2
  • Inability to provide informed consent
  • Excessive alcohol consumption (>28 Units/week men or >21 Units/week women)
  • Food sensitivities or allergies that would interfere with a tolerance of a fruit and vegetable rich diet
  • Medical conditions or dietary restrictions that would substantially limit inability to complete the study requirements

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Queen's University Belfast

    Belfast, BT12 6BJ

Other trials in United Kingdom

About this study

Official title: Effect of Increased Fruit and Vegetable Intake on Biomarkers of Fruit and Vegetable Consumption

This study will examine what contribution of 'markers' of fruit and vegetable (FV) intake in blood and urine is most closely related to FV intake. 30 healthy volunteers will be fed either 2, 5 or 8 portions of FV per day for 4 weeks (ten participants per group, randomly assigned). Volunteers will have all their food provided during the study, and will consume two meals each weekday at the University. Volunteers will complete diet and lifestyle questionnaires at the start and end of the study and will have blood and urine samples collected at 0, 2 and 4 weeks.

Read the detailed description

Single biomarkers of FV consumption, such as Vitamin C and certain carotenoids and flavonoids, have been proposed, but associations between these compounds and FV intake are relatively weak. The investigators propose that, given the complexity of FV, production of an algorithm based on a wide variety of bioactive compounds found in FV might better predict FV consumption. A controlled feeding study (30 volunteers randomised to 2, 5 or 8 portions of FV day for 4 weeks) will allow development of such an algorithm. Volunteers will be recruited by advertisement from QUB and the general public, and will have all their food provided for the 4 week period (two meals per day during the week to be consumed under supervision at the University).

Conditions
Healthy
Being tested
2 portions of fruit and vegetables per day, 5 portions of fruit and vegetables per day, 8 portions of fruit and vegetables per day
Keywords
fruit, vegetables, biomarkers, randomised controlled feeding study, Fruit and vegetable intake biomarkers in healthy adults

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • 2 portions of fruit and vegetables per dayDietary supplement

    Also called 2 portions/day

    Consume 2 portions of fruit and vegetables per day

  • 5 portions of fruit and vegetables per dayDietary supplement

    Also called 5 portions/day

    Consume 5 portions of fruit and vegetables per day

  • 8 portions of fruit and vegetables per dayDietary supplement

    Also called 8 portions/day

    Consume 8 portions of fruit and vegetables per day

Study groups in NCT01591057
Study groupRoleWhat they receive
2 PortionsExperimentalNot described
Receives: Dietary Supplement: 2 portions of fruit and vegetables per day
5 portionsExperimentalNot described
Receives: Dietary Supplement: 5 portions of fruit and vegetables per day
8 portionsExperimentalNot described
Receives: Dietary Supplement: 8 portions of fruit and vegetables per day

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in biomarkers of fruit and vegetable consumption

    Measured: Baseline and 4 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted3 May 2012 (estimated)
  2. Study startJun 2011
  3. Primary completionNov 2012
  4. Study completionNov 2012

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
30 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01591057
Sponsor's protocol ID
11/07
Acronym
BIOFAV
Status last verified
Nov 2012
First submitted
27 Apr 2012
Last updated
27 Nov 2012
Results posted
No
Data monitoring committee
Yes

Publications

  • Appleton KM, McGrath AJ, McKinley MC, Draffin CR, Hamill LL, Young IS, Woodside JV. The value of facial attractiveness for encouraging fruit and vegetable consumption: analyses from a randomized controlled trial. BMC Public Health. 2018 Mar 1;18(1):298. doi: 10.1186/s12889-018-5202-6.

    PubMed 29490640
  • McGrath AJ, Hamill LL, Cardwell CR, Draffin CR, Neville CE, Appleton KM, McEneny J, McKinley MC, Young IS, Woodside JV. Combining vitamin C and carotenoid biomarkers better predicts fruit and vegetable intake than individual biomarkers in dietary intervention studies. Eur J Nutr. 2016 Jun;55(4):1377-88. doi: 10.1007/s00394-015-0953-7. Epub 2015 Jun 17.

    PubMed 26081648

Questions about this trial

What is this clinical trial studying?

A study testing 2 portions of fruit and vegetables per day, 5 portions of fruit and vegetables per day and 8 portions of fruit and vegetables per day in people with Healthy, run by Queen's University, Belfast at 1 site in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 27 Nov 2012. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in biomarkers of fruit and vegetable consumption (time frame: Baseline and 4 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01591057, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Nov 2012.

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