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Completed

NCT Number: NCT02263586

Influence of Triathlon on the Electrolyte Balance

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

Completed

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Key information

Conditions

Hyponatremia Metabolic Diseases Nutritional and Metabolic Diseases Water-Electrolyte Imbalance

Age range

18 year–60 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Uniklinik Köln

Cologne, North Rhine-Westphalia, 50937, Germany

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Exclusion criteria

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

Treatment and study plan

Education in nutrition

Behavioral

Athletes were given a 45 min lesson on the proper diet and fluid intake to prevent hyponatremia in long-distance triathlon.

Primary outcomes

  1. Electrolyte balance Blood sodium

    Time frame: within 20 minutes after finishing the race

Secondary outcomes

  1. Acid balance

    Time frame: within 20 minutes after finishing the race

Sponsors and collaborators

Lead sponsor

University Hospital of Cologne

Other

Registry information

Official study title

Acid-base and Electrolyte Balance Among Triathletes in the Ironman European Championship

Acronym: Ironman

Important dates

Study start
2014
Primary completion
2015
Study completion
2015
First posted
Oct 13, 2014
Registry last updated
May 5, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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