Association between thermal responses, medical events, performance, heat acclimation and health status in male and female elite athletes during the 2019 Doha World Athletics Championships
- Creators
- Racinais, Sebastien
- Havenith, George
- Aylwin, Polly
- Ihsan, Mohammed
- Taylor, Lee
- Adami, Paolo Emilio
- Adamuz, Maria-Carmen
- Alhammoud, Marine
- Alonso, Juan Manuel
- Bouscaren, Nicolas
- Buitrago, Sebastian
- Cardinale, Marco
- van Dyk, Nicol
- Esh, Chris
- Gomez-Ezeiza, Josu
- Garrandes, Frederic
- Holtzhausen, Louis
- Labidi, Mariem
- Lange, Gűnter
- Lloyd, Alexander
- Moussay, Sebastien
- Mtibaa, Khouloud
- Townsend, Nathan
- Wilson, Mathew
- Bermon, Stephane
- Others:
- ASPETAR Orthopaedic and Sports Medicine Hospital [Qatar]
- Loughborough University
- National University of Singapore (NUS)
- University of Technology Sydney (UTS)
- Laboratoire Motricité Humaine Expertise Sport Santé (LAMHESS) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université de Toulon (UTLN)-Université Côte d'Azur (UCA)
- Centre d'Investigation Clinique de La Réunion - INSERM (CIC 1410) ; Université de La Réunion (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Universitaire de La Réunion (CHU La Réunion)
- Centre Hospitalier Universitaire de La Réunion (CHU La Réunion)
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM ) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])
- University College of London [London] (UCL)
- School of Sport, Exercise & Health Sciences ; Loughborough University
- Stellenbosch University
- University of Pretoria [South Africa]
- Mobilités : Vieillissement, Pathologie, Santé (COMETE) ; Université de Caen Normandie (UNICAEN) ; Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM)
- GIP Cyceron (Cyceron) ; Université de Caen Normandie (UNICAEN) ; Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CHU Caen ; Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
- Qatar University
- Hamad Bin Khalifa University (HBKU)
Citation
Description
Purpose To determine associations between thermal responses, medical events, performance, heat acclimation and health status during a World Athletics Championships in hot-humid conditions. Methods From 305 marathon and race-walk starters, 83 completed a preparticipation questionnaire on health and acclimation. Core (T core ; ingestible pill) and skin (T skin ; thermal camera) temperatures were measured in-competition in 56 and 107 athletes, respectively. 70 in-race medical events were analysed retrospectively. Performance (% personal best) and did not finish (DNF) were extracted from official results. Results Peak T core during competition reached 39.6°C±0.6°C (maximum 41.1°C). T skin decreased from 32.2°C±1.3°C to 31.0°C±1.4°C during the races (p<0.001). T core was not related to DNF (25% of starters) or medical events (p≥0.150), whereas T skin , T skin rate of decrease and T core -to-T skin gradient were (p≤0.029). A third of the athletes reported symptoms in the 10 days preceding the event, mainly insomnia, diarrhoea and stomach pain, with diarrhoea (9% of athletes) increasing the risk of in-race medical events (71% vs 17%, p<0.001). Athletes (63%) who performed 5–30 days heat acclimation before the competition: ranked better (18±13 vs 28±13, p=0.009), displayed a lower peak T core (39.4°C±0.4°C vs 39.8°C±0.7°C, p=0.044) and larger in-race decrease in T skin (−1.4°C±1.0°C vs −0.9°C±1.2°C, p=0.060), than non-acclimated athletes. Although not significant, they also showed lower DNF (19% vs 30%, p=0.273) and medical events (19% vs 32%, p=0.179). Conclusion T skin , T skin rate of decrease and T core -to-T skin gradient were important indicators of heat tolerance. While heat-acclimated athletes ranked better, recent diarrhoea represented a significant risk factor for DNF and in-race medical events.
Abstract
International audience
Additional details
- URL
- https://hal-normandie-univ.archives-ouvertes.fr/hal-03600603
- URN
- urn:oai:HAL:hal-03600603v1
- Origin repository
- UNICA