Clinical trial Recruiting at 1 site Interventional Ages 21 to 50

Effects of watermelon juice on heart recovery and muscle soreness after exercise

Official title: Effects of Watermelon Juice on Heart Rate Recovery and Post-exercise Muscle Soreness

Run by San Diego State University · NCT03380195 · Data updated 2026-11-12

This study tests if drinking watermelon juice helps healthy adults recover their heart rate and reduces muscle soreness after exercise better than Gatorade, sugar water, or plain water.

Quick facts

Study typeInterventional
Ages21 Years to 50 Years
SexAll
Enrollment27 (estimated)
SponsorSan Diego State University
Academic / other
Locations1 site (San Diego, California)
StatusRecruiting
StartedSeptember 1, 2016
Main results expectedDecember 2028
Study endsDecember 2028
Registry record updatedJanuary 21, 2026
Trial IDNCT03380195 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are healthy adults aged 21-50 who engage in regular physical activity.

Probably not a fit

Patients with chronic inflammatory conditions, injuries, or those on medications affecting blood pressure may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates how a single dose of watermelon juice, compared to Gatorade, sugar water, and plain water, affects heart rate recovery, blood lactate levels, and muscle soreness 24 hours after exercise. Healthy adults aged 21-50 will participate in the trial, which aims to provide insights into the potential benefits of watermelon juice as a natural recovery aid. Participants will be monitored for changes in heart rate and muscle soreness following their exercise regimen.

Why it matters

Potential benefit: If successful, this study could provide a natural and effective recovery option for athletes and active individuals.

How similar studies have gone: While there is limited research specifically on watermelon juice, similar studies on natural recovery aids have shown promising results.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ages of 21-50 healthy adults

Exclusion Criteria:

* Suffering from injury
* Chronic inflammatory conditions
* Required dietary supplement use
* Required medication which affects blood pressure
* Smoking
* Pregnant woman
* Allergy to watermelon

Where it's running

  • Exercise and Nutritional Sciences, SDSU
    San Diego, California, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.