Effects of Acute Intake of Caffeinated Beverages in Type 1 Diabetes

NCT ID: NCT01805700

Last Updated: 2013-03-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-01-31

Study Completion Date

2011-07-31

Brief Summary

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The aim of this pilot study is to determine the impact of caffeine-enhanced energy drinks on blood glucose excursion on heart rate, blood pressure, cardiac output and cognitive performance in patients with type 1 diabetes.

Knowledge acquired may inform a wider study of the impact of these drinks.

This is a randomised, cross over blinded study in which all participants will participate in the 3 arms of the study.

The study will consist of 3 phases, each lasting 3 days. A different study drink will be administered during each phase. There will be an initial screening visit and a pre- study visit before each study phase. Each participant will make 10 visits to the research centre.

There will be a week wash out period between each study phase. Prior to each study phase, there will be a 3 day caffeine and alcohol abstinence run-in period.

Study drinks will be matched for taste and volume (as far as possible) and will be administered by the use of opaque cups, lids and straws to enable double-blind randomisation for both researcher and participants. Administration of the study drink to participants will be based on Latin squares to provide a balanced treatment order.

During the 3 days study period; participants will be required to abstain from all other caffeine containing beverages or confectioneries.

The secondary aim is to determine if tolerance to cardiovascular effects of caffeine-enhanced energy drinks is developed following acute short term ingestion.

Detailed Description

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Conditions

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Type 1 Diabetes

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

HEALTH_SERVICES_RESEARCH

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Regular caffeine enhanced energy drink

Regular caffeine enhanced energy drink (containing 240mg caffeine \& 84g glucose) e.g. regular red bull cans (x3)

Group Type EXPERIMENTAL

Caffeine enhanced energy drink

Intervention Type OTHER

Comparison of different energy drinks

Diet Caffeine enhanced energy drink

Diet Caffeine enhanced energy drink ( containing 240mg of caffeine alone) e.g. Red Bull light)

Group Type EXPERIMENTAL

Caffeine enhanced energy drink

Intervention Type OTHER

Comparison of different energy drinks

Glucose drink

Glucose drink (containing 84g glucose alone)

Group Type ACTIVE_COMPARATOR

Glucose drink

Intervention Type OTHER

Glucose drink (containing 84mg glucose alone)

Interventions

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Caffeine enhanced energy drink

Comparison of different energy drinks

Intervention Type OTHER

Glucose drink

Glucose drink (containing 84mg glucose alone)

Intervention Type OTHER

Other Intervention Names

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Red Bull

Eligibility Criteria

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Inclusion Criteria

* Male and female adults aged ≥18 years
* Confirmed diagnosis of Type 1 diabetes of more than one year duration
* Participants who use multiple daily injections of basal and meal-time analogue insulin.
* Ability to perform daily finger stick measurements of blood glucose levels
* Adequate contraceptive control
* Provision of informed consent

Exclusion Criteria

* Hypoglycaemia unawareness
* Coronary heart disease
* Cardiac arrhythmia
* Structural heart lesions,
* Autonomic neuropathy
* Psychiatry illness,
* Epilepsy
* Migraine
* Caffeine intolerance
* Unable to provide informed consent
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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The Royal Bournemouth Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Tolulope Olateju, MRCP

Role: PRINCIPAL_INVESTIGATOR

The Royal Bournemouth and Christchurch Hospitals NHS Foundation Trust

Locations

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The Royal Bournemouth and Christchurch Hospitals NHS Foundation Trust

Bournemouth, Dorset, United Kingdom

Site Status

Countries

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United Kingdom

Other Identifiers

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B091217

Identifier Type: -

Identifier Source: org_study_id

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