An interventional study of Water and Hydration Education in Dehydration, sponsored by PepsiCo Global R&D. Completed at 1 site in United States. Open to participants aged 13 Years to 19 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-21.
Sponsored by PepsiCo Global R&D (part of PepsiCo, Inc.) · Not applicable, Interventional, and Basic science
Sports science testing by investigators at Gatorade Sports Science Institute has revealed that many athletes arrive at practice with a high urine specific gravity indicating they are hypohydrated. Though the data showed that most athletes don't lose more than 2% of their body weight in sweat during a training session, it is not known what the cumulative effects of living and training in a hot environment are over the course of a week. Previous research has indicated that prescribing fluid intake is more effective than education in improving drinking behavior during exercise. No studies to date have compared the impact of fluid intake prescription versus education in adolescent boys and girls playing outdoor and indoor sports.
Comparing sexes and training environment may provide more clarity around potential barriers and challenges to proper hydration for each environment.
This study will implement a parallel design with 4 sports team groups: 1) Indoor girls, 2) Indoor boys, 3) Outdoor girls, and 4) Outdoor boys. Each group of 36 per groups will be randomized into 1 of 3 conditions: 1) control (no intervention), 2) hydration education intervention, 3) prescribed hydration and education intervention. Athletes will be observed for three practices per week for 2 weeks. Practices are separated by at least 48 hours.
201 studies on the registry are indexed under Dehydration; 28 are open to participants now.
This study's enrollment of 131 is above the median of 43 across 145 interventional studies indexed under Dehydration.
Browse Dehydration studies →PepsiCo Global R&D is the lead sponsor of 103 studies on the registry; 8 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
No hydration education or fluid prescription. Pre-practice urine specific gravity (USG), pre- and post-practice body mass, thirst scale measures. Fluid intake during practice (whatever the team is drinking) .
In-depth education session regarding the effects of dehydration, the performance benefits of proper hydration, and how to properly hydrate before, during, and after activity. Pre-practice urine specific gravity (USG), pre- and post-practice body mass, thirst scale measures. Fluid intake during practice (whatever the team is drinking).
Other: Hydration Education
In-depth education session regarding the effects of dehydration, the performance benefits of proper hydration, and how to properly hydrate before, during, and after activity. Pre-practice urine specific gravity (USG), pre- and post-practice body mass, thirst scale measures. Provided a standard amount of bottled water to drink the evening prior (1 liter) and in the two hours before practice (20 oz). Fluid intake will be recorded in an intake log. Subjects will be permitted to eat or drink whatever they like in addition to the prescribed fluid. Fluid intake during practice (whatever the team is drinking).
Other: Water · Other: Hydration Education
Prescribed amount of bottled water the evening prior and 2 hours prior to team practice
30-60 minutes
urine specific gravity (USG).
Assessed using hand-held refractometer, units recorded to the nearest 0.001
Time frame: Pre-practice x 3 practices in Week 1 and 3 practices in Week 2
Body weight
Assessed using Tanita portable scale, units recorded to the nearest 0.01 kg
Time frame: Change from pre-practice to post-practice x 3 practices in Week 1 and 3 practices in Week 2
Fluid intake Week 2 (measured for Prescription Group only)
Assessed using beverage weight scale. Units recorded to the nearest 1 ml
Time frame: Intake from evening before through post-practice x 3 practices in Week 2
Thirst questionnaire
6 items (thirst, pleasure to drink now, mouth feel, taste, stomach fullness, stomach sickness) each anchored from not at all to very, each on a 100 mm scale.
Time frame: Change from pre-practice to post-practice x 3 practices in Week 1 and 3 practices in Week 2
Plan to share: No
No publications or documents are linked to this record.
Ran from Nov 2024 to primary completion in Nov 2025, 12 months.
Of 73 interventional studies with no phase under Dehydration, half reached primary completion within 9 months of starting (the median), counting those still running; a quarter within 5 and three quarters within 18. This study's 12 months is above that.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.