Publication detail

Reported Hydration Beliefs and Behaviors without Effect on Plasma Sodium in Endurance Athletes

CHLÍBKOVÁ, D. ROSEMANN, T. NIKOLAIDIS, P.T. KNECHTLE, B. BEDNÁŘ, J.

Original Title

Reported Hydration Beliefs and Behaviors without Effect on Plasma Sodium in Endurance Athletes

Type

journal article in Web of Science

Language

English

Original Abstract

Purpose: Little information is available on the association of hydration beliefs and behaviors in endurance athletes and exercise-associated hyponatremia (EAH). The aim of the present study was to determine hydration beliefs and behaviors in endurance athletes. Method: A 100 and 38 recreational athletes [107 mountain bikers (MTBers) and 31 runners] competing in seven different endurance and ultra-endurance races completed pre- and post-race questionnaires, and a subgroup of 113 (82%) participants (82 MTBers and 31 runners) also provided their blood samples. Result: More than half of the participants had some pre-race (59%), mid-race (58%), and post-race (55%) drinking plan. However, the participants simultaneously reported that temperature (66%), thirst (52%), and plan (37%) affected their drinking behavior during the race. More experienced (years of active sport: p = 0.002; number of completed races: p < 0.026) and trained (p = 0.024) athletes with better race performance (p = 0.026) showed a more profound knowledge of EAH, nevertheless, this did not influence their planned hydration, reported fluid intake, or post-race plasma sodium. Thirteen (12%) hyponatremic participants did not differ in their hydration beliefs, race behaviors, or reported fluid intake from those without post-race EAH. Compared to MTBers, runners more often reported knowledge of the volumes of drinks offered at fluid stations (p < 0.001) and information on how much to drink pre-race (p < 0.001), yet this was not associated with having a drinking plan (p > 0.05). MTBers with hydration information planned more than other MTBers (p = 0.004). In comparison with runners, more MTBers reported riding with their own fluids (p < 0.001) and planning to drink at fluid stations (p = 0.003). On the whole, hydration information was positively associated with hydration planning (n = 138) (p = 0.003); nevertheless, the actual reported fluid intake did not differ between the group with and without hydration information, or with and without a pre-race drinking plan (p > 0.05). Conclusion: In summary, hydration beliefs and behaviors in the endurance athletes do not appear to affect the development of asymptomatic EAH.

Keywords

runners, mountain bikers, fluid intake

Authors

CHLÍBKOVÁ, D.; ROSEMANN, T.; NIKOLAIDIS, P.T.; KNECHTLE, B.; BEDNÁŘ, J.

Released

2. 5. 2017

Publisher

Frontiers

Location

Lausanne Switzerland

ISBN

1664-042X

Periodical

Frontiers in Physiology

Year of study

8

Number

259

State

Swiss Confederation

Pages from

1

Pages to

11

Pages count

11

URL

http://journal.frontiersin.org/article/10.3389/fphys.2017.00259/full

Full text in the Digital Library

http://hdl.handle.net/11012/70133

BibTex

@article{BUT136141,
  author="Daniela {Chlíbková} and Thomas {Rosemann} and Pantelis T. {Nikolaidis} and Beat {Knechtle} and Josef {Bednář}",
  title="Reported Hydration Beliefs and Behaviors without Effect on Plasma Sodium in Endurance Athletes",
  journal="Frontiers in Physiology",
  year="2017",
  volume="8",
  number="259",
  pages="1--11",
  doi="10.3389/fphys.2017.00259",
  issn="1664-042X",
  url="http://journal.frontiersin.org/article/10.3389/fphys.2017.00259/full"
}