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Updated: Jan 30, 2026

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
Published on: March 9, 2021
Illness at a Para Athletics Track and Field World Championships under Hot and Humid Ambient Conditions
Lara Grobler1, Wayne Derman2, Sebastien Racinais3
1Institute of Sport and Exercise Medicine, Faculty of Health and Medical Sciences, Department of Sport Science, Faculty of Education, Stellenbosch University, Cape Town, South Africa.
Background:
Heat-related illness, including heat exhaustion and heat stroke, is seen as a major risk for athletes with a physical impairment.
Objective:
Primary: To survey the illness statistics during the 2015 Para Athletics World Championships and report on any cases of significant heat-related illnesses. Secondary: To document the heat countermeasures taken on behalf of the organizing committee.
Design:
Retrospective audit.
Setting:
Medical records collected at medical centers during the 2015 Para Athletics World Championships.
Participants:
Athletes participating in the 2015 Para Athletics World Championships.
Methods:
Illness statistics and records of hospitalizations of athletes participating in the championships were recorded by the medical officials during the precompetition (3 days) and competition (10 days) periods. Furthermore, wet-bulb globe temperatures (WBGTs) were measured at the competition venues.
Main Outcome Measurements:
Incidence rates of illness during the precompetition and competition periods.
Results:
WBGTs ranged from 24.6°C to 36.0°C, regularly exceeding the American College of Sports Medicine (ACSM) and International Association of Athletics Federations (IAAF) guidelines for cancelation in the morning both during the competition (ACSM, 52%; IAAF, 97%) and precompetition periods (ACSM, 75%; IAAF, 100%). These guidelines were not exceeded as regularly during the evening and noon for both the precompetition and competition periods (ACSM, 0%-5%; IAAF, 0%-58%). The illness incidence rate was 2.89 per 1000 athlete-days (incidence proportion = 3.76%; confidence interval = 2.69%-4.83%). Only seven cases of heat-related illness were recorded, of which three required hospitalization.
Conclusion:
This study indicates low rates of illness, including hospitalization and intravenous administration for heat-related illness among athletes participating in the 2015 Para Athletics World Championships.
Level Of Evidence:
III.
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