Watermelon Juice for Heart Rate Recovery and Muscle Soreness

This study is looking at how different drinks affect your heart rate recovery (how quickly your heart rate returns to normal after exercise) and muscle soreness after exercise. Researchers want to see if drinking watermelon juice, Gatorade, sugar water, or plain water before exercise makes a difference. You might be able to join if you are a healthy adult between 21 and 50 years old. The study aims to find out if any of these drinks help your heart rate recover faster and reduce muscle soreness 24 hours later. The current status of this study is unclear, and it plans to enroll 27 participants.

Study design
This is an interventional study, meaning participants will receive specific treatments (watermelon juice, Gatorade, sugar water, or water). It plans to enroll 27 healthy adults.
What's involved
You would drink one of the assigned beverages an hour before a submaximal exercise session. Your heart rate will be measured at baseline and for up to 20 minutes after exercise.
Compensation
Not stated in the trial record.
Follow-up
Your heart rate will be measured for up to 20 minutes after exercise, and muscle soreness will be assessed 24 hours after exercise.

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NCT03380195

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

Recruiting
NAAges 21–50InterventionalPrevention
San Diego State University
~27 participants
Updated 2026-01-21 on ClinicalTrials.gov
What's tested:Watermelon juiceSport drinkSugar waterWater

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Change of heart rate after submax exercise
Measured over Baseline and every minute post exercise for a maximum 20 minutes post exercise.
Heart Rate Recovery
1 sites across 1 states
California1

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Eligibility criteria

Inclusion

ages of 21-50 healthy adults

Exclusion

Suffering from injury
Chronic inflammatory conditions
Required dietary supplement use
Required medication which affects blood pressure
Smoking
Pregnant woman
Allergy to watermelon
  • Change of heart rate after submax exerciseBaseline and every minute post exercise for a maximum 20 minutes post exercise.

    The participants then were fitted to cycling shoes and familiarized with the Lode cycle ergometer (Lode Excalibur Sport, Groningen, Netherlands), completed a warm-up and were asked to perform a criterion work rate trial ending at 80% predicted HRmax. Heart rate was recorded every minute post exercise for a maximum of 20 minutes post exercise.