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Rehydration Efficiency During Ad-libitum Fluid Intake

Rehydration Efficiency During Ad-libitum Fluid Intake

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06414291
Acronym
LIV-D2O
Enrollment
20
Registered
2024-05-16
Start date
2024-05-21
Completion date
2024-12-03
Last updated
2025-08-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dehydration

Brief summary

It is well established that rehydration with a carbohydrate-electrolyte solution is more effective in comparison to plain water. This is primarily based on the sodium-glucose co transporter, based on which the world health organization has based its oral rehydration solution recommendations. Also, rehydration with a solution that includes sodium and glucose plasma osmolality should not drop as much as it happens during rehydration with water. As a result, we should have higher fluid intake due to higher thirst perception and lower urinary output due to higher levels of vasopressin. The present study aims to examine the effectiveness of a electrolyte-glucose drink on rehydration following exercise-induced dehydration.

Interventions

Plain water without calories, sweetener, or electolytes

Drink with 22 grams of carbohydrate, 1020 milligrams of sodium, and 760 milligrams of potassium per liter. Hydration multiplier liquid IV

OTHERLiquid IV Sugar Free

10 grams of carbohydrate, 1060 milligrams of sodium, and 760 milligrams of potassium per liter. Sugar free Liquid IV

Sponsors

Arizona State University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
SINGLE (Subject)

Masking description

non labeled bottles

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes

Inclusion criteria

* Age 18-60 years * Training at least 2 times per week * stable weight for the last 2 months (fluctuation less than 5 pounds)

Exclusion criteria

* Night shifting work * Thyroid medication * Bariatric surgery * Cardiovascular disease * Renal disease * Hepatic disease * Participating in another study at the same time * Bodyweight over 110 pounds

Design outcomes

Primary

MeasureTime frameDescription
Total fluid intake4 hours of rehydrationTotal amount of fluid ingested
Net fluid balanceat 4 hours of the rehydration periodamount of water retained during the rehydration period
Rate of absorptionduring the first 30 minutes of rehydrationThe rate of Deuterium appearance in the blood during 30 minutes of rehydration
Cumulative urine outputduring the first 3 hours of rehydrationTotal amount of urine output during rehydration

Secondary

MeasureTime frameDescription
Thirstat 30 minutes, 1 hour, 2 hours, 3 hours and 4 hours of the rehydration periodThirst estimated with a visual analog scale from 0-125 millimeters with higher value indicating greater perception
Plasma copeptinat 30 minutes, 1 hour, 2 hours, 3 hours and 4 hours of the rehydration periodPlasam Copeptin during rehydration
Taste Likenessat 30 minutes, 1 hour, 2 hours, 3 hours and 4 hours of the rehydration periodTaste Likeness estimated with a visual analog scale from 0-125 millimeters with higher value indicating greater perception
Stomach fullnessat 30 minutes, 1 hour, 2 hours, 3 hours and 4 hours of the rehydration periodStomach fullness estimated with a visual analog scale from 0-125 millimeters with higher value indicating greater perception
Plasma volumeat 30 minutes, 1 hour, 2 hours, 3 hours and 4 hours of the rehydration periodpercent of plasma volume recovery during the rehydration
Free water Clearanceat 30 minutes, 1 hour, 2 hours, 3 hours and 4 hours of the rehydration periodFree water clearance calculated based on plasma and urine osmolality
Free Osmotic Clearanceat 30 minutes, 1 hour, 2 hours, 3 hours and 4 hours of the rehydration periodFree Osmotic clearance calculated based on plasma and urine osmolality

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026