GSSI Labs app and phone camera plus wearables to track hydration

Is this trial a fit for you?

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

What this trial studies

This remote feasibility project uses the Gatorade Sports Science Institute (GSSI) Labs app to collect self-reported hydration markers, wearable device data, and transdermal optical imaging (TOI) via participants' phone cameras. Participants must connect a supported activity tracker and a bathroom scale, follow app instructions including drinking 600 mL of water, and complete remote data sessions. The primary focus is user engagement (adherence, dropout) and differences across demographics, while the secondary focus is within-subject TOI feature changes before and after acute fluid ingestion. Recruitment was handled by an outside service and data collection and oversight are conducted through PepsiCo's GSSI infrastructure.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* 18-65 years of age, inclusive
* Male or female. If female, subject is not pregnant, planning to get pregnant, or currently breast feeding
* Able to speak, write, and read English
* Provision of written consent to participate
* Owns and wears an activity tracker daily, including during sleep, except when submerged underwater (i.e., swimming, bathing) and is willing to connect their device to the app, per GSSI Labs App requirements (Oura, WHOOP, Apple Watch, Garmin, Polar, Withings, or Fitbit).
* Owns a bathroom scale
* Able to drink 600mL (600 mL = 20 oz = 2 ½ cups) of water as directed.
* Willing to avoid alcohol consumption 24 hours prior to study session(s)

Exclusion Criteria:

* Subject is currently enrolled in a clinical trial or has participated in a clinical trial within the past 30 days.
* Subject is employed by, or has a parent, guardian, or other immediate family member employed by a company that manufactures any products that compete with any Gatorade product. If subject is unsure if a company would be considered a competitor to Gatorade, they will be asked to please let the study investigator know the name of the other company and the nature of their relationship to that company before they sign the informed consent.

Where it's running

• Advanced Personalized Ideation Center (API) and Gatorade Sports Science Institute (GSSI), PepsiCo Global R&D - Life Sciences
  Chicago, Illinois, United States Recruiting

Study contacts

• Principal investigator: Shellen Goltz, PhD, RD — Advanced Personalized Ideation Center (API) & Gatorade Sports Science Institute (GSSI), PepsiCo Global R&D - Life Sciences
• Study coordinator: Shellen Goltz, PhD, RD
• Email: Shellen.Goltz@pepsico.com
• Phone: 312-821-3317

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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.