Publication detail

Description of Three Female 24-h Ultra-Endurance Race Winners in Various Weather Conditions and Disciplines

CHLÍBKOVÁ, D. ROSEMANN, T. KNECHTLE, B. NIKOLAIDIS, P.T. ŽÁKOVSKÁ, A. SUDI, K.

Original Title

Description of Three Female 24-h Ultra-Endurance Race Winners in Various Weather Conditions and Disciplines

Type

journal article in Web of Science

Language

English

Original Abstract

The incidence of exercise-associated hyponatremia (EAH) is higher in women than in men. We present three cases of a very mild post-race EAH in female winners of three 24-h ultra races in various weather conditions and disciplines with post-race plasma sodium [Na+] levels of 134 mM (Case 1), 133 mM (Case 2) and 134 mM (Case 3). Moreover, Case 1 and Case 2 showed elevated creatine kinase (CK) concentrations of >10,000 U/I with an absence of renal function abnormality. The common characteristics were female sex, veteran recreational category, long race experience in the particular sports discipline, excellent race performance, similar total weekly training hours and the presence of luteal phase of the menstrual cycle during the race. Hematocrit and hemoglobin decreased and post-race K+/Na+ ratio in urine increased in all three cases. In addition, an increased body mass and a decreased urine specific gravity and urine osmolality suggested over-drinking in Case 1. A decrease in the glomerular filtration rate (GFR) and creatine clearance accompanied by an increase in urine [Na+] may contribute to fluid overload in Cases 2 and 3. Furthermore, urine osmolality reached a level indicating antidiuretic hormone (ADH) secretion in all the present cases. Therefore, we recommend that race medical personnel should not forget to look for EAH even in fast and experienced female athletes and during races in different environmental conditions.

Keywords

mountain biking; running; 24-h-race

Authors

CHLÍBKOVÁ, D.; ROSEMANN, T.; KNECHTLE, B.; NIKOLAIDIS, P.T.; ŽÁKOVSKÁ, A.; SUDI, K.

Released

31. 8. 2017

Publisher

WOLTERS KLUWER MEDKNOW PUBLICATIONS

Location

MUMBAI

ISBN

0304-4920

Periodical

CHINESE JOURNAL OF PHYSIOLOGY

Year of study

60

Number

4

State

Republic of India

Pages from

231

Pages to

241

Pages count

11

URL

https://www.ncbi.nlm.nih.gov/pubmed/28847143

BibTex

@article{BUT133544,
  author="Daniela {Chlíbková} and Thomas {Rosemann} and Beat {Knechtle} and Pantelis T. {Nikolaidis} and Alena {Žákovská} and Karl {Südi}",
  title="Description of Three Female 24-h Ultra-Endurance Race Winners in Various Weather Conditions and Disciplines",
  journal="CHINESE JOURNAL OF PHYSIOLOGY",
  year="2017",
  volume="60",
  number="4",
  pages="231--241",
  doi="10.4077/CJP.2017.BAF443",
  issn="0304-4920",
  url="https://www.ncbi.nlm.nih.gov/pubmed/28847143"
}