The Effects of Dehydration on the Performance of Judoka

Not Applicable

• Conditions: Dehydration
• Interventions: Other: Dehydration

• Registration Number: NCT03677674
• Lead Sponsor: Vrije Universiteit Brussel

Brief Summary

Dehydration is a common phenomenon in judo that can lead to negative performance such as a decline in strength, a decline in anaerobic performance, a reduced body fluid balance, glycogen depletion and worsened psychological parameters. Therefore, we want to simulate several judo combats and look at the performances whether they change during a competition day. We also want to see if the results are different in a dehydrated versus euhydrated state.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2018-07-24
• Status Verified: 2018-09
• Study First Submitted QC: 2018-09-18
• Last Update Submitted: 2018-09-18
• Study First Posted: 2018-09-19
• Last Update Posted: 2018-09-19
• Study Start: 2018-10-01
• Primary Completion: 2019-12-20
• Study Completion: 2020-01-30

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 27

Inclusion Criteria

• judoka
• minimum 18 years
• men and women
• only dehydration: sauna, warm bath, sweat suit

Exclusion Criteria

• injured
• sick
• not underaged (18 years)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
dehydrated	Dehydration	The participants will be dehydrated (at least 2% of their body weight) before performing the Sterkowicz test.

Primary Outcome Measures

Name	Time	Method
Sterkowicz test	Up to 3 weeks	Sterkowicz test

Secondary Outcome Measures

Name	Time	Method
heart rate	Up to 3 weeks	Heart rate will be determined using the Polar H1 (Polar, Kempele, Finland)
Borg Rating of Perceived Exertion Scale	Up to 3 weeks	The Borg Rating of Perceived Exertion scale is a numerical scale (to determine exertion) that ranges from 6 to 20, where 6 means "no exertion at all" and 20 means "maximal exertion.
body temperature	Up to 3 weeks	Body temperature will be determined using the Adtemp 421 Digital Ear Thermometer (American Diagnostics Corporations, Hauppauge, New York, United States of America)
Body weight	Up to 3 weeks	Body weight will be assessed to the nearest 0.002 kg using the WLT 60/120/X/L3 scale (All Scales Europe, Veen, The Netherlands)