Can hyperhydration improve half-marathon time-trial performance in hot conditions?

Not Applicable

Completed

• Conditions: Dehydration; Diet and Nutrition - Other diet and nutrition disorders

• Registration Number: ACTRN12621001331820
• Lead Sponsor: Deakin University

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2021-09-29
• Study Completion: 2023-03-11
• Last Update Posted: 18 June 2024

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 13

Inclusion Criteria

The inclusion criteria for this study is: trained males and females, aged 18-45 years. To be classified as 'trained', potential participants must be completing running based trained greater than or equal to 3 times per week and greater than or equal to 5 hours per week as per published criteria for participants completing exercise-based studies.

Exclusion Criteria

Exclusion criteria includes any abnormal renal function, use of diuretics or creatine in the previous eight weeks as these factors can effect the body's fluid retention capability. Participants that have previously suffered from heat illness and those that have an impairment that affects thermoregulation will also be excluded.

Participants will be excluded if they answer 'Yes' to any of the first six questions in stage one of the Exercise and Sport Science pre-screening tool. Participants will also complete stage 2 of the Exercise and Sport Science pre-screening tool, those that have multiple (i.e., 2 or more) risk factors will be asked to seek medical advice before participating in this project.

Participants must not have sustained a lower limb injury in the previous six months and have no current injury that will impair their ability to complete the exercise protocol.

Participants will also be excluded if they have a history of migraines, chronic headaches or liver disease as it is recommended that these populations avoid glycerol ingestion.

Participants who are allergic to the nutritional aids used in the study (i.e., glycerol or sodium chloride) will also be excluded.

Study & Design

• Study Type: Interventional
• Study Design: Not specified