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The Effects of a Polyphenol-enriched Fruit Drink on Metabolic Health(2)

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: NCT01836887
Recruitment Status : Completed
First Posted : April 22, 2013
Last Update Posted : September 16, 2019
Lucozade Ribena Suntory
Information provided by (Responsible Party):
Dr Wendy Hall, King's College London

Brief Summary:
The purpose of this study is to determine whether consumption of the active product affects postprandial changes in metabolic indices, in comparison to the control product.

Condition or disease Intervention/treatment Phase
Healthy Men and Women Dietary Supplement: Very low polyphenol fruit based drink (control) Dietary Supplement: Polyphenol-enriched fruit-based drink - low Dietary Supplement: Polyphenol-enriched fruit-based drink - high Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 22 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Fruit Polyphenols: Maximising Knowledge of Their Metabolic Health Benefits and Practical Applications (Phase 2)
Study Start Date : February 2013
Actual Primary Completion Date : September 2013
Actual Study Completion Date : February 2014

Arm Intervention/treatment
Placebo Comparator: Intervention 1
Very low polyphenol fruit based drink (control)
Dietary Supplement: Very low polyphenol fruit based drink (control)
Active Comparator: Intervention 2
Polyphenol-enriched fruit-based drink - low
Dietary Supplement: Polyphenol-enriched fruit-based drink - low
Active Comparator: Invervention 3
Polyphenol-enriched fruit-based drink - high
Dietary Supplement: Polyphenol-enriched fruit-based drink - high

Primary Outcome Measures :
  1. Metabolic health [ Time Frame: Postprandial response (2hrs) ]
    Postprandial metabolic response

Information from the National Library of Medicine

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Ages Eligible for Study:   20 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy free-living men aged from 20 to 60 years old, and postmenopausal women aged from 45 to 60 years old, on the day of inclusion
  • Able to understand the information sheet and comply with all the trial procedures
  • Having given written consent to take part in the study prior to participation.
  • Body mass index (BMI): 18.0 - 35 kg/m².

Exclusion Criteria:

  • Those diagnosed with Phenylketonuria (PKU)
  • Those with known or suspected food intolerances, allergies or hypersensitivity
  • Women who are known to be pregnant or who are intending to become pregnant over the course of the study
  • Women who are breast feeding
  • Participation in another clinical trial
  • Those who have donated blood within 3 months of the screening visit and participants for whom participation in this study would result in having donated more than 1500 millilitres of blood in the previous 12 months
  • Those with Full Blood Counts and Liver Function test results outside of the normal range
  • Pre-menopausal women due to the potential influence of cyclical changes in reproductive hormones on insulin sensitivity
  • Current smokers, or reported giving up smoking within the last 6 months
  • History of substance abuse or alcoholism
  • Reported history of CVD, diabetes (or fasting glucose ≥ 7.1 mmol/L), cancer, kidney, liver or bowel disease, gastrointestinal disorder or use of drug likely to alter gastrointestinal function
  • Unwilling to restrict consumption of specified high polyphenol foods for 24 h before the study
  • Weight loss >3kg in preceding 2 months and body mass index <18 or >35 kg/m²
  • Blood pressure ≥160/100 mmHg
  • Total cholesterol ≥ 7.5 mmol/L; fasting triacylglycerol concentrations ≥ 5.0 mmol/L
  • Medications that may interfere with the study such as alpha-glucosidase inhibitors (e.g. acarbose), insulin-sensitising drugs (e.g. metformin, thiazolidinediones), sulfonylureas, and lipid-lowering drugs. Other medications, should be reviewed by medical representative from KCL on a case by case basis.
  • Nutritional supplements that may interfere with the study such as higher dose vitamins/minerals (>200% RNI), B vitamins, Vitamin C, calcium, copper, chromium, iodine, iron, magnesium, manganese, phosphorus, potassium and zinc. Subjects already taking vitamin or minerals at a dose around 100 % or less up to 200% of the RNI, or evening primrose/algal/fish oil supplements will be asked to maintain habitual intake patterns, ensuring that they take them every day and not sporadically. They will be advised not to stop taking supplements or start taking new supplements during the course of the study.

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): NCT01836887

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United Kingdom
Diabetes & Nutritional Sciences Division, School of Medicine, King's College London
London, United Kingdom, SE1 9NH
Sponsors and Collaborators
King's College London
Lucozade Ribena Suntory

Additional Information:
Thesis  This link exits the site

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Responsible Party: Dr Wendy Hall, Lecturer in Nutritional Sciences, King's College London Identifier: NCT01836887    
Other Study ID Numbers: TSB101118 (2)
Technology Strategy Board ( Other Grant/Funding Number: 12681-83204 )
First Posted: April 22, 2013    Key Record Dates
Last Update Posted: September 16, 2019
Last Verified: September 2019
Keywords provided by Dr Wendy Hall, King's College London: