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Triathlon and Ultra-Endurance Events in Tropical Environments

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Heat Stress in Sport and Exercise

Abstract

Physical performance in tropical environments, which combine heat and high humidity, is a challenge that requires specific preparation. The high humidity of a tropical climate alters thermoregulatory capacity by limiting the rate of sweat evaporation. Proper management of whole-body temperature is thus essential to complete an endurance event like a long-distance triathlon or an ultramarathon in such an environment. In triathlon and ultra-endurance races, which can last from 8 to 20 h, performance in tropical settings is closely linked to the capacity to maintain hydration status. Indeed, the rate of withdrawal in these longer events has been associated with water intake, with many finishers showing alterations in electrolyte (e.g., sodium) balance. To counterbalance the impact of a tropical climate and maintain performance, several countermeasures can be adopted, such as using hydration and cooling strategies, and heat acclimation.

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References

  1. Giambelluca T et al. Evapotranspiration of Hawaiʻi: final report to the US Army Corps of Engineers—Honolulu District and the Commission on Water Resource Management, State of Hawaiʻi. 2014: 178 p.

    Google Scholar 

  2. Stiefel M, Knechtle B, Rüst CA, Rosemann T. Analysis of performances at the ‘Ironman Hawaii triathlon’ and its qualifier events with respect to nationality. J Sci Cycl. 2013;2:27.

    Google Scholar 

  3. Ironman (2018) Rules and regulations. http://m.eu.ironman.com/triathlon/events/emea/ironman/tallinn/athletes/rules-and-regulations.aspx.

    Google Scholar 

  4. Britt R (2011) North American Ironman DNF rates: finishers and DNF by race. http://www.runtri.com/2010/09/north-american-ironman-dnf-rates.html.

    Google Scholar 

  5. Trappe T, Pease D, Trappe S, Troup J, Burke E. Physiological responses to swimming while wearing a wet suit. Int J Sports Med. 1996;17:111–4.

    CAS  Google Scholar 

  6. Kerr CG, Trappe TA, Starling RD, Trappe SW. Hyperthermia during Olympic triathlon: influence of body heat storage during the swimming stage. Med Sci Sports Exerc. 1998;30:99–104.

    CAS  Google Scholar 

  7. Laursen PB, et al. Core temperature and hydration status during an Ironman triathlon. Br J Sports Med. 2006;40:320–5; discussion 325

    CAS  Google Scholar 

  8. Laursen PB, Watson G, Abbiss CR, Wall BA, Nosaka K. Hyperthermic fatigue precedes a rapid reduction in serum sodium in an ironman triathlete: a case report. Int J Sports Physiol Perform. 2009;4:533–7.

    Google Scholar 

  9. Baillot M, Hue O. Hydration and thermoregulation during a half-ironman performed in tropical climate. J Sports Sci Med. 2015;14:263–8.

    Google Scholar 

  10. Harris KM, Henry JT, Rohman E, Haas TS, Maron BJ. Sudden death during the triathlon. JAMA. 2010;303:1255–7.

    CAS  Google Scholar 

  11. Nybo L. Cycling in the heat: performance perspectives and cerebral challenges. Scand J Med Sci Sports. 2010;20(Suppl 3):71–9.

    Google Scholar 

  12. Saat M, Sirisinghe RG, Singh R, Tochihara Y. Effects of short-term exercise in the heat on thermoregulation, blood parameters, sweat secretion and sweat composition of tropic-dwelling subjects. J Physiol Anthropol Appl Hum Sci. 2005a;24:541–9.

    Google Scholar 

  13. Saat M, Tochihara Y, Hashiguchi N, Sirisinghe RG, Fujita M, Chou CM. Effects of exercise in the heat on thermoregulation of Japanese and Malaysian males. J Physiol Anthropol Appl Hum Sci. 2005b;24:267–75.

    Google Scholar 

  14. Voltaire B, Berthouze-Aranda S, Hue O. Influence of a hot/wet environment on exercise performance in natives to tropical climate. J Sports Med Phys Fitness. 2003;43:306–11.

    CAS  Google Scholar 

  15. Galloway SD, Maughan RJ. Effects of ambient temperature on the capacity to perform prolonged cycle exercise in man. Med Sci Sports Exerc. 1997;29:1240–9.

    CAS  Google Scholar 

  16. Maughan RJ, Otani H, Watson P. Influence of relative humidity on prolonged exercise capacity in a warm environment. Eur J Appl Physiol. 2012;112:2313–21.

    Google Scholar 

  17. Hue O, Voltaire B, Hertogh C, Blonc S. Heart rate, thermoregulatory and humoral responses during a 9-day cycle race in a hot and humid climate. Int J Sports Med. 2006;27:690–6.

    CAS  Google Scholar 

  18. Wu SS, Peiffer JJ, Brisswalter J, Nosaka K, Lau WY, Abbiss CR. Pacing strategies during the swim, cycle and run disciplines of sprint, Olympic and half-Ironman triathlons. Eur J Appl Physiol. 2015;115:1147–54.

    Google Scholar 

  19. Nielsen B. Olympics in Atlanta: a fight against physics. Med Sci Sports Exerc. 1996;28:665–8.

    CAS  Google Scholar 

  20. Kenefick RW, Cheuvront SN, Sawka MN. Thermoregulatory function during the marathon. Sports Med. 2007;37:312–5.

    Google Scholar 

  21. Ely MR, Cheuvront SN, Roberts WO, Montain SJ. Impact of weather on marathon-running performance. Med Sci Sports Exerc. 2007;39:487–93.

    Google Scholar 

  22. Marino FE, Mbambo Z, Kortekaas E, Wilson G, Lambert MI, Noakes TD, Dennis SC. Advantages of smaller body mass during distance running in warm, humid environments. Pflugers Arch. 2000;441:359–67.

    CAS  Google Scholar 

  23. Del Coso J, et al. Relationship between physiological parameters and performance during a half-ironman triathlon in the heat. J Sports Sci. 2014;32:1680–7.

    Google Scholar 

  24. Siegel R, Mate J, Brearley MB, Watson G, Nosaka K, Laursen PB. Ice slurry ingestion increases core temperature capacity and running time in the heat. Med Sci Sports Exerc. 2010;42:717–25.

    Google Scholar 

  25. Zaryski C, Smith DJ. Training principles and issues for ultra-endurance athletes. Curr Sports Med Rep. 2005;4:165–70.

    Google Scholar 

  26. Maughan RJ. Distance running in hot environments: a thermal challenge to the elite runner. Scand J Med Sci Sports. 2010;20(Suppl 3):95–102.

    Google Scholar 

  27. Parise CA, Hoffman MD. Influence of temperature and performance level on pacing a 161 km trail ultramarathon. Int J Sports Physiol Perform. 2011;6:243–51.

    Google Scholar 

  28. Brotherhood JR. Heat stress and strain in exercise and sport. J Sci Med Sport. 2008;11:6–19.

    Google Scholar 

  29. Taylor NA. Challenges to temperature regulation when working in hot environments. Ind Health. 2006;44:331–44.

    Google Scholar 

  30. Gagnon D, Jay O, Kenny GP. The evaporative requirement for heat balance determines whole-body sweat rate during exercise under conditions permitting full evaporation. J Physiol. 2013;591:2925–35.

    CAS  Google Scholar 

  31. Brown JS, Connolly D. Food and fluid intake during extreme heat: experiences from the Badwater Ultramarathon. Wilderness Environ Med. 2015;26:e4.

    Google Scholar 

  32. Knechtle B, Knechtle P, Rosemann T. Low prevalence of exercise-associated hyponatremia in male 100 km ultra-marathon runners in Switzerland. Eur J Appl Physiol. 2011;111:1007–16.

    Google Scholar 

  33. Tam N, Hew-Butler T, Papadopoulou E, Nolte H, Noakes TD. Fluid intake and changes in blood biochemistry, running speed and body mass during an 80 km mountain trail race. Med Sport. 2009;13:108–15.

    Google Scholar 

  34. Stuempfle KJ, Hoffman MD, Weschler LB, Rogers IR, Hew-Butler T. Race diet of finishers and non-finishers in a 100 mile (161 km) mountain footrace. J Am Coll Nutr. 2011;30:529–35.

    CAS  Google Scholar 

  35. Glace BW, Murphy CA, McHugh MP. Food intake and electrolyte status of ultramarathoners competing in extreme heat. J Am Coll Nutr. 2002;21:553–9.

    Google Scholar 

  36. Hue O, Henri S, Baillot M, Sinnapah S, Uzel AP. Thermoregulation, hydration and performance over 6 days of trail running in the tropics. Int J Sports Med. 2014;35:906–11.

    CAS  Google Scholar 

  37. Sawka MN, Montain SJ, Latzka WA. Hydration effects on thermoregulation and performance in the heat. Comp Biochem Physiol A Mol Integr Physiol. 2001;128:679–90.

    CAS  Google Scholar 

  38. Sawka MN, Noakes TD. Does dehydration impair exercise performance? Med Sci Sports Exerc. 2007;39:1209.

    Google Scholar 

  39. Latzka WA, Sawka MN, Montain SJ, Skrinar GS, Fielding RA, Matott RP, Pandolf KB. Hyperhydration: thermoregulatory effects during compensable exercise-heat stress. J Appl Physiol (1985). 1997;83:860–6.

    CAS  Google Scholar 

  40. Ross ML, Jeacocke NA, Laursen PB, Martin DT, Abbiss CR, Burke LM. Effects of lowering body temperature via hyperhydration, with and without glycerol ingestion and practical precooling on cycling time trial performance in hot and humid conditions. J Int Soc Sports Nutr. 2012;9:55.

    CAS  Google Scholar 

  41. Latzka WA, Sawka MN. Hyperhydration and glycerol: thermoregulatory effects during exercise in hot climates. Can J Appl Physiol. 2000;25:536–45.

    CAS  Google Scholar 

  42. Sawka MN, Francesconi RP, Young AJ, Pandolf KB. Influence of hydration level and body fluids on exercise performance in the heat. JAMA. 1984;252:1165–9.

    CAS  Google Scholar 

  43. Scheadler CM. Glycerol hyperhydration and endurance running performance in the heat. Ohio: The Ohio State University; 2009.

    Google Scholar 

  44. Teunissen LP, Grabowski A, Kram R. Effects of independently altering body weight and body mass on the metabolic cost of running. J Exp Biol. 2007;210:4418–27.

    Google Scholar 

  45. Noakes TD, Goodwin N, Rayner BL, Branken T, Taylor RK. Water intoxication: a possible complication during endurance exercise, 1985. Wilderness Environ Med. 2005;16:221–7.

    Google Scholar 

  46. Speedy DB, et al. Fluid balance during and after an ironman triathlon. Clin J Sport Med. 2001;11:44–50.

    CAS  Google Scholar 

  47. Kenefick RW. Drinking strategies: planned drinking versus drinking to thirst. Sports Med. 2018;48:31–7.

    Google Scholar 

  48. Hew-Butler T, et al. Statement of the second international exercise-associated hyponatremia consensus development conference, New Zealand, 2007. Clin J Sport Med. 2008;18:111–21.

    Google Scholar 

  49. Noakes TD. Drinking guidelines for exercise: what evidence is there that athletes should drink “as much as tolerable”, “to replace the weight lost during exercise” or “ad libitum”? J Sports Sci. 2007;25:781–96.

    CAS  Google Scholar 

  50. Hoffman MD, Stuempfle KJ, Rogers IR, Weschler LB, Hew-Butler T. Hyponatremia in the 2009 161-km western states endurance run. Int J Sports Physiol Perform. 2012;7:6–10.

    Google Scholar 

  51. Lebus DK, Casazza GA, Hoffman MD, Van Loan MD. Can changes in body mass and total body water accurately predict hyponatremia after a 161-km running race? Clin J Sport Med. 2010;20:193–9.

    Google Scholar 

  52. Maughan RJ. Fluid and electrolyte loss and replacement in exercise. J Sports Sci. 1991;9(S1):117–42.

    Google Scholar 

  53. Shirreffs SM, Sawka MN. Fluid and electrolyte needs for training, competition, and recovery. J Sports Sci. 2011;29(Suppl 1):S39–46.

    Google Scholar 

  54. Speedy DB, et al. Hyponatremia in ultradistance triathletes. Med Sci Sports Exerc. 1999;31:809–15.

    CAS  Google Scholar 

  55. Vrijens DM, Rehrer NJ. Sodium-free fluid ingestion decreases plasma sodium during exercise in the heat. J Appl Physiol (1985). 1999;86:1847–51.

    CAS  Google Scholar 

  56. Del Coso J, et al. Effects of oral salt supplementation on physical performance during a half-ironman: a randomized controlled trial. Scand J Med Sci Sports. 2016;26:156–64.

    Google Scholar 

  57. Von Duvillard SP, Braun WA, Markofski M, Beneke R, Leithauser R. Fluids and hydration in prolonged endurance performance. Nutrition. 2004;20:651–6.

    Google Scholar 

  58. Bergeron MF. Heat cramps: fluid and electrolyte challenges during tennis in the heat. J Sci Med Sport. 2003;6:19–27.

    CAS  Google Scholar 

  59. Hoffman MD, Stuempfle KJ. Hydration strategies, weight change and performance in a 161 km ultramarathon. Res Sports Med. 2014;22:213–25.

    Google Scholar 

  60. Baillot M, Le Bris S, Hue O. Fluid replacement strategy during a 27-km trail run in hot and humid conditions. Int J Sports Med. 2014;35:147–52.

    CAS  Google Scholar 

  61. Tran Trong T, Riera F, Rinaldi K, Briki W, Hue O. Ingestion of a cold temperature/menthol beverage increases outdoor exercise performance in a hot, humid environment. PLoS One. 2015;10:e0123815.

    Google Scholar 

  62. Burdon CA, Hoon MW, Johnson NA, Chapman PG, O’Connor HT. The effect of ice slushy ingestion and mouthwash on thermoregulation and endurance performance in the heat. Int J Sport Nutr Exerc Metab. 2013;23:458–69.

    Google Scholar 

  63. Riera F, Trong T, Rinaldi K, Hue O. Precooling does not enhance the effect on performance of midcooling with ice-slush/menthol. Int J Sports Med. 2016;37:1025–31.

    CAS  Google Scholar 

  64. Siegel R, Mate J, Watson G, Nosaka K, Laursen PB. Pre-cooling with ice slurry ingestion leads to similar run times to exhaustion in the heat as cold water immersion. J Sports Sci. 2012;30:155–65.

    Google Scholar 

  65. Yeo ZW, Fan PW, Nio AQ, Byrne C, Lee JK. Ice slurry on outdoor running performance in heat. Int J Sports Med. 2012;33:859–66.

    CAS  Google Scholar 

  66. Arngrimsson SA, Petitt DS, Stueck MG, Jorgensen DK, Cureton KJ. Cooling vest worn during active warm-up improves 5-km run performance in the heat. J Appl Physiol (1985). 2004;96:1867–74.

    Google Scholar 

  67. Hasegawa H, Takatori T, Komura T, Yamasaki M. Wearing a cooling jacket during exercise reduces thermal strain and improves endurance exercise performance in a warm environment. J Strength Cond Res. 2005;19:122–8.

    Google Scholar 

  68. Luomala MJ, Oksa J, Salmi JA, Linnamo V, Holmér I, Smolander J, Dugue B. Adding a cooling vest during cycling improves performance in warm and humid conditions. J Therm Biol. 2012;37:47–55.

    Google Scholar 

  69. Ansley L, Marvin G, Sharma A, Kendall MJ, Jones DA, Bridge MW. The effects of head cooling on endurance and neuroendocrine responses to exercise in warm conditions. Physiol Res. 2008;57:863–72.

    CAS  Google Scholar 

  70. Stevens CJ, Kittel A, Sculley DV, Callister R, Taylor L, Dascombe BJ. Running performance in the heat is improved by similar magnitude with pre-exercise cold-water immersion and mid-exercise facial water spray. J Sports Sci. 2017;35:798–805.

    Google Scholar 

  71. Tyler CJ, Sunderland C. Neck cooling and running performance in the heat: single versus repeated application. Med Sci Sports Exerc. 2011;43:2388–95.

    Google Scholar 

  72. Stevens CJ, Best R. Menthol: a fresh ergogenic aid for Athletic performance. Sports Med. 2017;47:1035–42.

    Google Scholar 

  73. Stevens CJ, Thoseby B, Sculley DV, Callister R, Taylor L, Dascombe BJ. Running performance and thermal sensation in the heat are improved with menthol mouth rinse but not ice slurry ingestion. Scand J Med Sci Sports. 2016;26:1209–16.

    CAS  Google Scholar 

  74. Stevens CJ, Bennett KJ, Sculley DV, Callister R, Taylor L, Dascombe BJ. A comparison of mixed-method cooling interventions on preloaded running performance in the heat. J Strength Cond Res. 2017;31:620–9.

    Google Scholar 

  75. McKeag D, Moeller JL. ACSM’s primary care sports medicine. Philadelphia: Wolters Kluwer/Lippincott Williams & Wilkins; 2007.

    Google Scholar 

  76. Armstrong LE, Maresh CM. The induction and decay of heat acclimatisation in trained athletes. Sports Med. 1991;12:302–12.

    CAS  Google Scholar 

  77. Nielsen B. Heat stress and acclimation. Ergonomics. 1994;37:49–58.

    CAS  Google Scholar 

  78. Kirby CR, Convertino VA. Plasma aldosterone and sweat sodium concentrations after exercise and heat acclimation. J Appl Physiol (1985). 1986;61:967–70.

    CAS  Google Scholar 

  79. Voltaire B, et al. Effect of fourteen days of acclimatization on athletic performance in tropical climate. Can J Appl Physiol. 2002;27:551–62.

    Google Scholar 

  80. Costa RJ, Crockford MJ, Moore JP, Walsh NP. Heat acclimation responses of an ultra-endurance running group preparing for hot desert-based competition. Eur J Sport Sci. 2014;14(Suppl 1):S131–41.

    Google Scholar 

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Chabert, C., Hermand, E., Hue, O. (2019). Triathlon and Ultra-Endurance Events in Tropical Environments. In: Périard, J., Racinais, S. (eds) Heat Stress in Sport and Exercise. Springer, Cham. https://doi.org/10.1007/978-3-319-93515-7_15

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