Effects of sports-hydration drinks on hydration and exercise performance while cycling in the heat

Not Applicable

Completed

• Conditions: Dehydration; Exercise performance; Cardiovascular - Normal development and function of the cardiovascular system; Oral and Gastrointestinal - Normal oral and gastrointestinal development and function; Musculoskeletal - Normal musculoskeletal and cartilage development and function; Diet and Nutrition - Other diet and nutrition disorders

• Registration Number: ACTRN12620000758909
• Lead Sponsor: niversity of South Australia

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2020-07-23
• Study Completion: 2021-06-29
• Last Update Posted: 29 November 2021

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 15

Inclusion Criteria

Male and female aged between 18 and 55 years.
- Non-smoker (minimum 6 months).
- Must complete at least 150 minute of vigorous cycling per week.
- Must meet or exceed a relative maximal oxygen uptake of 55ml/kg/min for males and 45ml/kg/min for females.

Exclusion Criteria

- Answered yes to any question in stage 1 of the Exercise and Sport Science Australia, Fitness Australia, Sports Medicine Australia and Exercise is Medicine's Adult Pre-Exercise Screening System.
- Resting blood pressure above 140/90 mmhg.
- Have a cardiovascular or metabolic condition that imposes a health risk during exercise.
- Regular use any medication or supplements that may alter heart rate or exercise performance.
- Are unwilling to provide urine or have blood samples taken.
- Are unwilling to unable to provide written consent.
- Have gastrointestinal issues.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Exercise performance as assessed by energy expenditure accumulated over 10-minutes. Calculated by Lode bike excalibur bike.[Collected at the completion of the 10-minute time trial.];Plasma volume change using the Dill and Costill (1974) method.[Baseline, before and after 10-minute time trial and end of 90-minute recovery.];Urine specific gravity using refractometer.[Collected at all time points (Baseline, between cycling bouts, before and after 10-minute time trial and end of 90-minute recovery).]