NCT02519764

Evaluation of the Impact of a Hydration Protocol "at Thirst" on Natremia of the Ultra Trail du Mont-Blanc, 2015 Runners

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 198 (actual)
• Sponsor: Centre Hospitalier Universitaire de Nīmes · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

The main objective of this study is to evaluate the impact of a hydration protocol "at thirst" compared to other "not at thirst" hydration protocols on the changes in serum sodium in runners of the Ultra Trail Mont-Blanc (UTMB) in 2015.

Detailed description

The secondary objectives of this study are: A. To assess the relationship between hydration protocols and the dropout rate. B. To evaluate the correlation between body weight change before and after the race and serum sodium before and after the race. C. To evaluate the change in serum sodium into major types of conventional hydration protocols. D. To evaluate the incidence of adverse events (cramps, gastrointestinal symptoms, etc ...) depending on the hydration protocol and the serum sodium.

Conditions

• Athletes
• Healthy

Interventions

Type	Name	Description
OTHER	Hydration when thirsty.	Volunteers in this arm habitually follow a hydration protocol that advises hydration when thirst is felt.
OTHER	Not hydration when thirsty	Volunteers in this arm habitually follow any other kind of hydration protocol, i.e. not a "hydration when thirsty" protocol.

Timeline

• Start date: 2015-08-01
• Primary completion: 2015-08-30
• Completion: 2015-08-30
• First posted: 2015-08-11
• Last updated: 2025-11-19

Locations

2 sites across 1 country: France