Influence of Triathlon on the Electrolyte Balance

Overview

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

Full Title of Study: “Acid-base and Electrolyte Balance Among Triathletes in the Ironman European Championship”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Retrospective
  • Study Primary Completion Date: April 2015

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.

Interventions

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

Clinical Trial Outcome Measures

Primary Measures

  • Electrolyte balance Blood sodium
    • Time Frame: within 20 minutes after finishing the race

Secondary Measures

  • Acid balance
    • Time Frame: within 20 minutes after finishing the race

Participating in This Clinical Trial

Inclusion Criteria

  • finisher of a long-distance triathlon – > 18 years – < 60 years Exclusion Criteria:

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

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: 60 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • University Hospital of Cologne
  • Provider of Information About this Clinical Study
    • Principal Investigator: Dr. med. Stefan Braunecker, Anesthesiologist, Researcher – University Hospital of Cologne
  • Overall Official(s)
    • Stefan Braunecker, M.D., Principal Investigator, University Hospital Cologne

Citations Reporting on Results

Almond CS, Shin AY, Fortescue EB, Mannix RC, Wypij D, Binstadt BA, Duncan CN, Olson DP, Salerno AE, Newburger JW, Greenes DS. Hyponatremia among runners in the Boston Marathon. N Engl J Med. 2005 Apr 14;352(15):1550-6. doi: 10.1056/NEJMoa043901.

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