The Effect of Acute Dehydration on Sleep Quality, Cognitive Skills, and Electromyographic Responses During Maximum Contraction in Combat Athletes
Status: Recruiting
Location: See location...
Intervention Type: Other
Study Type: Interventional
Study Phase: Not Applicable
SUMMARY
This study examines the effects of rapid dehydration-induced weight loss on combat athletes' sleep quality, cognitive skills, and isokinetic strength performance. The research documents both benefits and risks of weight-cutting practices for athletes, coaches, and medical staff in weight-class sports. Findings will guide safer weight management approaches and inform potential revisions to international weigh-in protocols, while contributing valuable insights to sports science.
Eligibility
Participation Requirements
Sex: Male
Minimum Age: 17
Maximum Age: 28
Healthy Volunteers: t
View:
• Voluntary participation
• Being combat athletes with prior rapid weight loss experience
• No existing health conditions
• No orthopedic injuries
Locations
Other Locations
Turkey
Bolu Abant İzzet Baysal University, Faculty of Sport Sciences,
RECRUITING
Bolu
Contact Information
Primary
Umid Karli, PhD
karli_u@ibu.edu.tr
+90 374 254 10 00
Backup
Kutlu Aydın, PhD
aydin_k@ibu.edu.tr
+90374 254 10 00
Time Frame
Start Date: 2025-08-18
Estimated Completion Date: 2026-06-30
Participants
Target number of participants: 12
Treatments
Experimental: Dehydration + Dehydrated Night Trial
In this trial 3% weight loss will be achieved with sauna application by taking the body weights recorded in the pre-test as a reference. Following the dehydration application, all measurements taken in the pre-test before the application will be repeated in order after approximately 45 minutes.~Athletes will be permitted to engage in a routine night without rehydration. During this period, their sleep quality will be recorded with a sleep tracker. The next day in the morning, all measurements taken in the pre-test will be repeated in order to evaluate the effect of dehydration and the possible negative effect of dehydration on sleep quality on the dependent variables. Following the completion of the morning measurements, the athletes will be permitted to consume fluids and food within two hours in order to reach their body weights in the pre-test. All tests will be reapplied for the last time to the athletes who have reached the state of rehydration, respectively.
Experimental: Dehydration + Rehydrated Night Trial
In this trial 3% weight loss will be achieved with sauna application by taking the body weights recorded in the pre-test as a reference. Following the dehydration application, all measurements taken in the pre-test before the application will be repeated in order after approximately 45 minutes, with the athlete refraining from consuming any food or liquid. Athletes will be permitted to rehydrate after the second measurements and will be asked to spend a routine night. The remaining tests will be repeated in accordance with the experimental trial 1 protocol.
No_intervention: Control Trial
No intervention will be conducted. All tests to be used to measure dependent variables will be conducted in accordance with the Experimental trial 1 protocol.
Related Therapeutic Areas
Sponsors
Leads: Abant Izzet Baysal University
Collaborators: The Scientific and Technological Research Council of Turkey