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Hydration and cooling in elite athletes: relationship with performance, body mass loss and body temperatures during the Doha 2019 IAAF World Athletics Championships.
Racinais, Sebastien; Ihsan, Mohammed; Taylor, Lee; Cardinale, Marco; Adami, Paolo Emilio; Alonso, Juan Manuel; Bouscaren, Nicolas; Buitrago, Sebastian; Esh, Chris J; Gomez-Ezeiza, Josu; Garrandes, Frederic; Havenith, George; Labidi, Mariem; Lange, Gunter; Lloyd, Alexander; Moussay, Sebastien; Mtibaa, Khouloud; Townsend, Nathan; Wilson, Mathew G; Bermon, Stephane.
Afiliación
  • Racinais S; Research and Scientific Support, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Ad Dawhah, Qatar sebastien.racinais@aspetar.com.
  • Ihsan M; Research and Scientific Support, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Ad Dawhah, Qatar.
  • Taylor L; Human Potential Translational Research Program, NUS Yong Loo Lin School of Medicine, Singapore.
  • Cardinale M; School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.
  • Adami PE; Human Performance Research Centre, University of Technology Sydney, Sydney, New South Wales, Australia.
  • Alonso JM; Research and Scientific Support, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Ad Dawhah, Qatar.
  • Bouscaren N; Institute of Sport Exercise and Health (ISEH), University College London, London, UK.
  • Buitrago S; Health and Science Department, World Athletics, Monaco.
  • Esh CJ; Sports Medicine, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Ad Dawhah, Qatar.
  • Gomez-Ezeiza J; Inserm CIC1410, CHU Reunion, La Réunion, France.
  • Garrandes F; Olympic Training and Service Centre Lower Saxony, Hannover, Germany.
  • Havenith G; Research and Scientific Support, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Ad Dawhah, Qatar.
  • Labidi M; School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.
  • Lange G; Institute of Sport and Exercise Medicine, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
  • Lloyd A; Health and Science Department, World Athletics, Monaco.
  • Moussay S; Environmental Ergonomics Research Centre, Loughborough University, Loughborough, Leics, UK.
  • Mtibaa K; Research and Scientific Support, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Ad Dawhah, Qatar.
  • Townsend N; Health and Science Department, World Athletics, Monaco.
  • Wilson MG; Environmental Ergonomics Research Centre, Loughborough University, Loughborough, Leics, UK.
  • Bermon S; Normandie Univ, UNICAEN, INSERM, COMETE, CYCERON, CHU Caen, Caen, Normandie, France.
Br J Sports Med ; 55(23): 1335-1341, 2021 Dec.
Article en En | MEDLINE | ID: mdl-33579722
PURPOSE: To characterise hydration, cooling, body mass loss, and core (Tcore) and skin (Tsk) temperatures during World Athletics Championships in hot-humid conditions. METHODS: Marathon and race-walk (20 km and 50 km) athletes (n=83, 36 women) completed a pre-race questionnaire. Pre-race and post-race body weight (n=74), Tcore (n=56) and Tsk (n=49; thermography) were measured. RESULTS: Most athletes (93%) had a pre-planned drinking strategy (electrolytes (83%), carbohydrates (81%)) while ice slurry was less common (11%; p<0.001). More men than women relied on electrolytes and carbohydrates (91%-93% vs 67%-72%, p≤0.029). Drinking strategies were based on personal experience (91%) rather than external sources (p<0.001). Most athletes (80%) planned pre-cooling (ice vests (53%), cold towels (45%), neck collars (21%) and ice slurry (21%)) and/or mid-cooling (93%; head/face dousing (65%) and cold water ingestion (52%)). Menthol usage was negligible (1%-2%). Pre-race Tcore was lower in athletes using ice vests (37.5°C±0.4°C vs 37.8°C±0.3°C, p=0.024). Tcore (pre-race 37.7°C±0.3°C, post-race 39.6°C±0.6°C) was independent of event, ranking or performance (p≥0.225). Pre-race Tsk was correlated with faster race completion (r=0.32, p=0.046) and was higher in non-finishers (did not finish (DNF); 33.8°C±0.9°C vs 32.6°C±1.4°C, p=0.017). Body mass loss was higher in men than women (-2.8±1.5% vs -1.3±1.6%, p<0.001), although not associated with performance. CONCLUSION: Most athletes' hydration strategies were pre-planned based on personal experience. Ice vests were the most adopted pre-cooling strategy and the only one minimising Tcore, suggesting that event organisers should be cognisant of logistics (ie, freezers). Dehydration was moderate and unrelated to performance. Pre-race Tsk was related to performance and DNF, suggesting that Tsk modulation should be incorporated into pre-race strategies.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Temperatura Corporal / Atletas Límite: Female / Humans / Male Idioma: En Revista: Br J Sports Med Año: 2021 Tipo del documento: Article País de afiliación: Qatar Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Temperatura Corporal / Atletas Límite: Female / Humans / Male Idioma: En Revista: Br J Sports Med Año: 2021 Tipo del documento: Article País de afiliación: Qatar Pais de publicación: Reino Unido