Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
12 participants
INTERVENTIONAL
2023-05-01
2024-01-12
Brief Summary
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Detailed Description
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Based on our previous work, dehydration will be accomplished on the morning of testing via mild exercise and heat exposure to elicit a body weight loss of -2%. The subjects will perform four bouts of 25-min low-intensity exercise and 5 min rest (alternating cycling \& walking) or till they reach -2% of body weight dehydration.
Rehydration:
Following a 20 min rest in thermo-comfortable environment a dehydrated baseline blood sample will be taken, and subject will start the rehydration protocol.
The volunteers will consume one of the four drinks below in a cross over balance mode. During the first hour four equal doses will be consumed in15-min intervals at a total volume of 150% of their body weight loss.
Trials/Drinks (block randomization will be used to assign individual participants to each specific trial/drink using their ID number):
* Water
* GoodSport®
* Gatorade®
* BodyArmor®
Measurements:
All measurements will be performed at one of the test rooms at our lab facility that boarders the room where participants can relax and wait out the end of the study day. When certain measurements need to be performed they simply move from one room to the next. Duration of taking blood and urine samples will take not more than 30-90 seconds each, bioelectrical impedance will take a bit more time to ensure the body is in a stable rested state as a result measurement will be taken in 10 minutes, finally perceptual data will take 30-60 seconds to be reported. To allow to perform all measurements study days will take up to 7 hours. Therefore, there will be a separate space available that allows for self-study or watching TV that includes a chair and table to work on and a couch to relax.
Blood samples (8 per trial, maximal 12 minutes):
A total of eight 10 mL blood samples will be collected on the euhydrated baseline, dehydrated baseline and at 30, 60, 90, 120, 180, and 240 min of the rehydration period.
All samples will be analyzed for glucose, osmolality, total plasma protein, hematocrit, hemoglobin (for plasma volume changes), sodium, potassium, and chloride.
Urine samples (6 per trial, maximal 9 minutes):
Urine samples will be collected using \~900 mL cups at euhydrated baseline, dehydrated baseline and cumulative totals will be collected at 60, 120, 180, and 240 min of the rehydration period. All samples will be analyzed for urine osmolality, specific gravity, volume, sodium, and potassium.
Perceptual Data (6 per trial, maximal 9 minutes):
Thirst, stomach fullness, and taste, assessed via a visual analog scale
Conditions
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Study Design
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RANDOMIZED
CROSSOVER
OTHER
SINGLE
Study Groups
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Water
rehydration with Plain water
Water
Plain water
Gatorade
rehydration with Gatorade drink
Gatorade
Sport Drink Gatorade
BodyArmor
Rehydration with Body Armor Drink
BodyArmor
Sport Drink BodyArmor
GoodSport
Rehydration with Good Sport drink
GoodSport
Sport Drink GoodSport
Interventions
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Water
Plain water
Gatorade
Sport Drink Gatorade
BodyArmor
Sport Drink BodyArmor
GoodSport
Sport Drink GoodSport
Eligibility Criteria
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Inclusion Criteria
* Age 18-55 y
* stable weight for the last 2 months (\<5 lbs. fluctuation)
Exclusion Criteria
* thyroid medication
* bariatric surgery
* cardiovascular disease
* renal disease
* hepatic disease
* Participating in another study at the same time
* Bodyweight \<110 lbs.
18 Years
55 Years
ALL
Yes
Sponsors
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Arizona State University
OTHER
Responsible Party
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Locations
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Interdisciplinary Science and Technology Building 8
Phoenix, Arizona, United States
Countries
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Other Identifiers
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FP00034719
Identifier Type: -
Identifier Source: org_study_id
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