Exercise and Nutritional Sciences, SDSU
San Diego, California, 92182-7251, United States
Location status: Recruiting
Recruiting
NCT Number: NCT03380195
Effects of Watermelon Juice on Heart Rate Recovery and Post-exercise Muscle Soreness
The purpose of this study was to determine the effects of a pre-exercise, single practical dose of watermelon juice, Gatorade, sugar water or water on heart rate recovery, blood lactate levels, and 24-hour post exercise muscle soreness.
Recruiting
Interested in participating?
Request InfoKey information
Conditions
Age range
21 year–50 year
Sex eligibility
All sexes
Study type
Interventional
Phase
Not applicable
Primary location
Who can participate
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
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
Treatment and study plan
Watermelon juice
OtherSubject drinks 355ml of watermelon juice 1 hour prior to submaximal exercise
Sport drink
OtherSubject drinks 355ml of Gatorade 1 hour prior to submaximal exercise
Sugar Water
OtherSubject drinks 355ml of sugar water (22.5g) 1 hour prior to submaximal exercise
Water
OtherSubject drinks 355ml of water 1 hour prior to submaximal exercise
Primary outcomes
-
Change of heart rate after submax exercise
Time frame: Baseline 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.
Study contacts
Contact information is provided by the study sponsor or research team.
Sponsors and collaborators
Lead sponsor
San Diego State University
Other
Registry information
Important dates
- Study start
- 2016
- Primary completion
- 2028
- Study completion
- 2028
- First posted
- Dec 21, 2017
- Registry last updated
- Jan 21, 2026
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.