Effect of Different Fluid Ingestion Rate on Post-exercise Rehydration

Not Applicable

• Conditions: Dehydration
• Interventions: Procedure: Different Fluid Ingestion Rate

• Registration Number: NCT04155372
• Lead Sponsor: Kaohsiung Veterans General Hospital.

Brief Summary

The purpose of the present study is to investigate the effect of different rate of fluid consumption on post-exercise rehydration.

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 Timeline

• Status Verified: 2019-11
• Study First Submitted: 2019-11-05
• Study First Submitted QC: 2019-11-05
• Last Update Submitted: 2019-11-06
• Study First Posted: 2019-11-07
• Last Update Posted: 2019-11-08
• Study Start: 2019-12
• Primary Completion: 2020-07
• Study Completion: 2020-08

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: Male
• Target Recruitment: 30

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 & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
90min	Different Fluid Ingestion Rate	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.
30min	Different Fluid Ingestion Rate	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.
60min	Different Fluid Ingestion Rate	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.

Primary Outcome Measures

Name	Time	Method
Body weight change	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
Osmolality(Urine)	Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period	dehydration: \>= 700 mosm/kg
specific gravity of urine(SG)	Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period	dehydration: \>= 1.020
sodium(blood)	Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period	135\~145mEq/L
Osmolality(Blood)	Change from baseline outcome measure at dehydration and 1st and 2nd hour in recovery period	dehydration: \>= 290 mosm/kg
Vasopressin	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.