The Impact of Watermelon Juice on Blood Pressure

NCT ID: NCT04328311

Last Updated: 2024-11-22

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

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

10 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-01-08

Study Completion Date

2024-12-30

Brief Summary

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L-citrulline is found naturally in watermelon. Recently interest has increased for this amino acid due to potential health benefits. Notably, L-citrulline has the potential to lead to dilation of blood vessels due to its involvement in the production of nitric oxide.

The study will be an acute single blind, randomised controlled, crossover intervention study in healthy, young volunteers. Participants receive either the test watermelon drink or control drink (water). Blood samples and vascular measures (by a single-cuff based method) will be measured at baseline. Vascular measures will be repeated at 15-minute intervals between 0-2 hours and a second blood sample will be drawn at 1.5 hours to coincide with the estimated peak plasma L-citrulline. Citrulline, arginine and nitric oxide metabolites will be measured in the blood samples.

Detailed Description

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Conditions

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Healthy Aging

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Investigators

Study Groups

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Active

Watermelon juice

Group Type EXPERIMENTAL

Watermelon Juice

Intervention Type OTHER

500 mL watermelon juice (What a Melon), containing \~1 g of L-citrulline.

Control

Low nitrate water.

Group Type OTHER

Water

Intervention Type OTHER

500 mL low nitrate water

Interventions

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Watermelon Juice

500 mL watermelon juice (What a Melon), containing \~1 g of L-citrulline.

Intervention Type OTHER

Water

500 mL low nitrate water

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Males and females
* 18-30 years

Exclusion Criteria

* Able to understand information sheet
* Willing to comply with the study protocol
* Able to give informed consent.


* Medical history of myocardial infarction
* Medical history of angina
* Medical history of thrombosis
* Medical history of stroke
* Medical history of cancer
* Medical history of high cholesterol
* Medical history of liver diseases
* Medical history of renal diseases
* Medical history of respiratory diseases
* Medical history of bowel diseases
* Medical history of diabetes
* Medical history of other endocrine disorders
* BMI \<18.5 kg/m2 or \>25 kg/m2
* Blood pressure \<90/60 or \> 140/90 mmHg
* Current use of antihypertensive medication
* Pregnant or lactating
* Alcohol intake \> 14 units/week
* Cigarette smoker (or quit within the last 6 months)
* Vigorous exercise \> 3 times/ week
Minimum Eligible Age

18 Years

Maximum Eligible Age

30 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Reading

OTHER

Sponsor Role lead

Responsible Party

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Charlotte E Mills

Lecturer

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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University of Reading

Reading, UK, United Kingdom

Site Status

Countries

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United Kingdom

Other Identifiers

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34/19

Identifier Type: -

Identifier Source: org_study_id

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