Wearable Photoplethysmography for Dehydration
What You Need to Know Before You Apply
What is the purpose of this trial?
Hydration status during exercise is often determined by measuring body mass change, fluid intake and urine output. However, obtaining these measurements can be an invasive, time-consuming process. Hydration status may be detectable by analyzing blood flow patterns of the superficial (just under the skin) blood vessels. Wearable devices are now abundant among the general population, and despite attempts from several groups, a hydration status metric based on noninvasive wearable device metrics has not been developed. With wearables, a light source connected to an optical sensor transmits and reflects light through the body. The light sensor detects absorption of the light based on wavelength measurements of the detected light. Absorption of specific wavelengths of light energy is dependent upon the amount of oxygenated blood in the vessels. When the vessels expand and relax, the amount of blood volume in the observed tissue increases and decreases potentially causing a shift in the photoplethysmography (PPG) wave detected by the wearable. The shift in the shape of the PPG wave may be detected in a way that indicates the relative change in tissue hydration levels. However, to our knowledge, no wrist worn device that utilizes PPG has been successfully able to predict hydration status. Therefore, this study aims to utilize photoplethysmography (PPG) technology in a wearable device to accomplish this approach to hydration monitoring.
Are You a Good Fit for This Trial?
Inclusion Criteria
Exclusion Criteria
Timeline for a Trial Participant
Screening
Participants are screened for eligibility to participate in the trial
Baseline Assessment
Baseline measurements including heart rate, blood pressure, and subject demographics are collected
Exercise and Hydration Monitoring
Participants undergo exercise sessions with continuous monitoring of hydration status using wearable devices
Follow-up
Participants are monitored for safety and effectiveness after the exercise and hydration monitoring phase
What Are the Treatments Tested in This Trial?
Interventions
- Wearable Photoplethysmography
How Is the Trial Designed?
2
Treatment groups
Experimental Treatment
Water provided to account for sweat loss during exercise and to maintain hydration over the 24-hour period
Fluid restriction during exercise and the remaining 24 hours
Find a Clinic Near You
Who Is Running the Clinical Trial?
PepsiCo Global R&D
Lead Sponsor
Ramon Laguarta
PepsiCo Global R&D
Chief Executive Officer since 2018
MBA from ESADE Business School
Mark Kirkham
PepsiCo Global R&D
Chief Marketing Officer
Bachelor's degree in Business Administration from Trinity College Dublin
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