Influence of Triathlon on the Electrolyte Balance

Completed

• Conditions: Hyponatremia

• Registration Number: NCT02263586
• Lead Sponsor: University Hospital of Cologne

Brief Summary

Aim of the study is examining the incidence of the occurrence of hyponatremia during a Triathlon

Detailed Description

Studies in similar endurance sports (e.g. marathon) could already indicate a high incidence for the appearance of hyponatremia during competitions. The loss of sodium through sweating and the excessive fluid intake during the competitions is a primary risk factor for the development of hyponatremia.

Based on the known occurrence of hyponatremia in marathon runners, participants of the Ironman European Championship between the years 2005 and 2014 were screened for the occurrence of hyponatremia after finishing the race for safety reasons. Subjects were approached at random in the athlete's garden and invited to participate. All participants were 18 years or older.

Study Timeline

• Study Start: 2014-08
• Study First Submitted: 2014-10-04
• Study First Submitted QC: 2014-10-08
• Study First Posted: 2014-10-13
• Primary Completion: 2015-04
• Status Verified: 2015-05
• Study Completion: 2015-05
• Last Update Submitted: 2015-05-02
• Last Update Posted: 2015-05-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 1089

Inclusion Criteria

• finisher of a long-distance triathlon
• > 18 years
• < 60 years

Exclusion Criteria

• not finished a long-distance triathlon
• < 18 years
• > 60 years

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Electrolyte balance Blood sodium	within 20 minutes after finishing the race

Secondary Outcome Measures

Name	Time	Method
Acid balance	within 20 minutes after finishing the race

Trial Locations

Locations (1)

Uniklinik Köln; 🇩🇪 Köln, NRW, Germany