Skip to Main content Skip to Navigation
Journal articles

Fluid Replacement Strategy during a 27-Km Trail Run in Hot and Humid Conditions

Abstract : We evaluated the eff ects of the fl uid replacement strategy on core temperature, heart rate and urine osmolality during a 27-km trail run in tropical climate. 20 well-trained runners completed a 27-km trail race in tropical conditions. They were acclimatized to these conditions. Heart rate was monitored every 5 s, while core temperature and perceived thermal and comfort sensations were recorded before, at the 11 th km, and just after the end of the race. Water intake, urine osmolality and body mass were measured before and after the race. Core temperature and the scores of perceived thermal and comfort sensations were signifi cantly higher at the 11 th km and at the end of the race compared to before the race, but not at the 11 th km compared to before the race. No participant exhibited dehydration as assessed by urine osmolality. The less the trail runners weighed, the greater the heat retention was. The less hot they felt at the end of the race, the more they lost water, and the better the performance was. The fastest runners were able to tolerate a greater variation in core temperature between the beginning and the end of the trail race with lower water intake.
Document type :
Journal articles
Complete list of metadatas

https://hal.univ-antilles.fr/hal-01152345
Contributor : Philippe Simon <>
Submitted on : Saturday, May 16, 2015 - 12:07:38 AM
Last modification on : Wednesday, July 18, 2018 - 8:11:27 PM

Identifiers

Collections

Citation

Michelle Baillot, Stéphanie Le Bris. Fluid Replacement Strategy during a 27-Km Trail Run in Hot and Humid Conditions. International Journal of Sports Medicine, Thieme Publishing, 2013, 35 (02), pp.147-152. ⟨10.1055/s-0033-1349108⟩. ⟨hal-01152345⟩

Share

Metrics

Record views

150