Impact of Nuun Electrolyte Tablets on Hydration Status in Active Men and Women

NCT ID: NCT04422158

Last Updated: 2021-04-28

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 20 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2020-06-03
• Study Completion Date: 2020-08-18

Brief Summary

The purpose of this study is to determine the impact of Nuun electrolyte tablets on hydration status in young and active men and women. We will follow a similar approach as used by Maughan and colleagues (2016) to measure the beverage hydration index (the relative amount of urine passed after consumption of a drink compared to water). It is hypothesized that Nuun electrolyte tablets will result in a greater hydration status as compared to water only. Due to the fact that athletes use Nuun tablets at varying dosages, we will evaluate Nuun at both a single dosage and a double dosage. We maintain a non-directional hypothesis regarding the potential differences between the two different dosages tested.

Detailed Description

Maintaining adequate hydration is essential to optimal health and athletic performance. When individuals exercise (in particular in a warm environment), they can lose excessive amounts of fluids through sweating, along with necessary electrolytes (e.g., sodium, potassium, chloride). With dehydration, individuals may feel sluggish and can experience impaired physical performance.

Many attempts have been made to improve and measure the hydration status of active individuals. This typically involves the ingestion of fluids leading up to activity (typically plain water), as well as the ingestion of fluids during the activity itself (water, along with a diluted carbohydrate/electrolyte beverage). This approach seems to work well; however, some debate remains over what the best fluid is to consume, in particular related to the macronutrient type and the specific electrolyte mix.

Related to the above, it is well-accepted that electrolyte replenishment is of importance, both during and following exercise-to aid in rehydration for subsequent bouts. The use of electrolytes (sodium in particular) has been used for decades to aid athlete hydration and has led to the development of various sport drinks-which also include small amounts of carbohydrate. However, one problem with carbohydrate ingestion is that some individuals experience gastrointestinal (GI) upset following carbohydrate ingestion before and during an event, despite very good physical performance outcomes. Due to this GI upset, some individuals (in particular recreationally active individuals who are not competing at high levels) rely solely on water and seek a method to ingest the lost electrolytes. In addition, some individuals prefer to have both plain water and an electrolyte beverage during their training/competition sessions and in some activities (e.g., running, cycling), carrying multiple bottles of fluid is difficult.

The solution to the above issues for many athletes is the use of electrolyte tablets. These can be dropped into plain water and will dissolve into a flavored electrolyte-rich beverage. They are easy to transport and provide the needed electrolytes to replace those that are lost through intense and/or long duration exercise.

Nuun electrolyte tablets provide only 2 grams of carbohydrate and a combination of electrolytes, provided at a relatively low percentage of the Daily Value (DV). The DV tells us how much a particular nutrient in a serving of a food product contributes to a daily diet, based on a standard 2000 calorie diet. Nuun tablets contain: calcium (13mg, 1%DV), sodium (300mg, 13%DV), potassium (150mg, 3%DV), magnesium (25mg, 6%DV), and chloride (40mg, 2%DV). These tablets contain a small percentage of the needed total electrolytes but adequate amounts to replace lost electrolytes as a result of physical activity.

While Nuun tablets are commercially available and have received positive reviews from end users, there have been no studies to date to evaluate the impact of these tablets on hydration status. Therefore, the purpose of this study is to determine the impact of Nuun electrolyte tablets on hydration status in young and active men and women. We will follow a similar approach as used by Maughan and colleagues to measure the beverage hydration index (the relative amount of urine passed after consumption of a drink compared to water). It is hypothesized that Nuun electrolyte tablets will result in a greater hydration status as compared to water only. Due to the fact that athletes use Nuun tablets at varying dosages, we will evaluate Nuun at both a single dosage and a double dosage. We maintain a non-directional hypothesis regarding the potential differences between the two different dosages tested.

Conditions

Hydration

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: SINGLE

Study Groups

Nuun Single strength

3 Nuun electrolyte tablets will be dissolved in 1.4 liters of water. Subjects will drink one liter of the prepared solution over 30 min (250 mL every 7.5 min)

Group Type: EXPERIMENTAL

Nuun electrolyte tablet

Intervention Type: DIETARY_SUPPLEMENT

Each table contains 2 grams of carbohydrate and a combination of electrolytes. calcium (13mg, 1%DV), sodium (300mg, 13%DV), potassium (150mg, 3%DV), magnesium (25mg, 6%DV), and chloride (40mg, 2%DV).

water

Intervention Type: OTHER

water

Nuun Double strength

6 Nuun electrolyte tablets will be dissolved in 1.4 liters of water. Subjects will drink one liter of the prepared solution over 30 min (250 mL every 7.5 min)

Group Type: EXPERIMENTAL

Nuun electrolyte tablet

Intervention Type: DIETARY_SUPPLEMENT

Each table contains 2 grams of carbohydrate and a combination of electrolytes. calcium (13mg, 1%DV), sodium (300mg, 13%DV), potassium (150mg, 3%DV), magnesium (25mg, 6%DV), and chloride (40mg, 2%DV).

water

Intervention Type: OTHER

water

Control

Subjects will drink one liter of water over 30 min (250 mL every 7.5 min)

Group Type: PLACEBO_COMPARATOR

water

Intervention Type: OTHER

water

Interventions

Nuun electrolyte tablet

Each table contains 2 grams of carbohydrate and a combination of electrolytes. calcium (13mg, 1%DV), sodium (300mg, 13%DV), potassium (150mg, 3%DV), magnesium (25mg, 6%DV), and chloride (40mg, 2%DV).

Intervention Type: DIETARY_SUPPLEMENT

water

water

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• BMI between 18.5 and 29.9 kg/m2 (not obese)
• Consumes 2 liters of water daily
• Exercised 3 hours/week over the past 6 months

Exclusion Criteria

• Obese
• Pregnant or trying to become pregnant
• Tobacco user
• Cardiac Disease
• Consumed alcohol within 48 hours of testing visit
• Consumed caffeine within 48 hours of testing visit
• Strenuous excercise 24 hours prior to testing visit

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 45 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Nuun & Company, Inc (Nuun)

UNKNOWN

Sponsor Role: collaborator

University of Memphis

OTHER

Sponsor Role: lead

Responsible Party

Richard Bloomer

Dean of School of Health Studies

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Richard Bloomer, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Memphis

Locations

Center for Nutraceutical and Dietary Supplement Research

Memphis, Tennessee, United States

Countries

United States

Other Identifiers

PRO-FY2020-327

Identifier Type: -

Identifier Source: org_study_id