Effect of Different Fluid Ingestion Rate on Post-exercise Rehydration

November 6, 2019 updated by: LIN, JIAN-YU, Kaohsiung Veterans General Hospital.
The purpose of the present study is to investigate the effect of different rate of fluid consumption on post-exercise rehydration.

Study Overview

Status

Unknown

Conditions

Detailed Description

The body water deficits equivalent to 2% body mass might impair performance. Due to high exercise intensity, thermal environment, or rule limitation, athletes often in dehydration status post-exercise. Thus, how to rehydrate effectively to prepare the next game is important. The participants arrived to the lab euhydrated and were dehydrated to 2% of body weight by running. After a rest, they will ingest sports drink in a volume equivalent to 150% of BW loss in 30 min, 60 min, or 90 min. Urine and blood sample will be collected to evaluate hydration status.

Study Type

Interventional

Enrollment (Anticipated)

30

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 35 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • 20~35 years old male
  • Exercise 150 min per week
  • Without chronic disease or gastrointestinal surgery

Exclusion Criteria:

  • Injury
  • Answer "Yes" in part 1 of the Physical Activity Readiness Questionnaire(PAR-Q+)
  • Participate in other studies within one month

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: CROSSOVER
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: 30min
The participants arrived to the trials euhydrated and were dehydrated to 2% of body weight (BW) by running. After a rest, they ingested sports drink in a volume equivalent to 150% of BW loss in 30 min.
The participants ingested sports drink in a volume equivalent to 150% of BW loss, in 30 min, 60 min, or 90min.
EXPERIMENTAL: 60min
The participants arrived to the trials euhydrated and were dehydrated to 2% of body weight (BW) by running. After a rest, they ingested sports drink in a volume equivalent to 150% of BW loss in 60 min.
The participants ingested sports drink in a volume equivalent to 150% of BW loss, in 30 min, 60 min, or 90min.
EXPERIMENTAL: 90min
The participants arrived to the trials euhydrated and were dehydrated to 2% of body weight (BW) by running. After a rest, they ingested sports drink in a volume equivalent to 150% of BW loss in 90 min.
The participants ingested sports drink in a volume equivalent to 150% of BW loss, in 30 min, 60 min, or 90min.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
specific gravity of urine(SG)
Time Frame: Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
dehydration: >= 1.020
Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
Osmolality(Urine)
Time Frame: Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
dehydration: >= 700 mosm/kg
Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
Osmolality(Blood)
Time Frame: Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
dehydration: >= 290 mosm/kg
Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
Vasopressin
Time Frame: Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
Vasopressin, also called antidiuretic hormone (ADH), arginine vasopressin (AVP) or argipressin, is a hormone synthesized as a peptide prohormone in neurons in the hypothalamus, and is converted to AVP. Increasing the water reabsorption and excretion of more concentrated urine.
Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
sodium(blood)
Time Frame: Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
135~145mEq/L
Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
Body weight change
Time Frame: Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period
measure body weight at baseline, dehydration, 1st and 2nd hour in recovery period in kg
Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: JIAN-YU LIN, Kaohsiung Veterans General Hospital.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ANTICIPATED)

December 1, 2019

Primary Completion (ANTICIPATED)

July 1, 2020

Study Completion (ANTICIPATED)

August 1, 2020

Study Registration Dates

First Submitted

November 5, 2019

First Submitted That Met QC Criteria

November 5, 2019

First Posted (ACTUAL)

November 7, 2019

Study Record Updates

Last Update Posted (ACTUAL)

November 8, 2019

Last Update Submitted That Met QC Criteria

November 6, 2019

Last Verified

November 1, 2019

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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