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A Preclinical Model of Exertional Heat Stroke in Mice
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Exercise heat acclimation causes human responses and safety performance improvements.

Shuai Zhang1, Neng Zhu1

  • 1School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; Tianjin Key Laboratory of Built Environment and Energy Application, Tianjin University, Tianjin, 300072, China.

Journal of Thermal Biology
|September 10, 2021
PubMed
Summary

Heat acclimation (HA) improves physiological and psychological responses in hot environments. This study found that HA training, under specific conditions, enhances safety performance by improving hazard awareness and emergency response capabilities.

Keywords:
Heat acclimationHyperthermal environmentsPhysical responseSafety performanceSafety protection

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Area of Science:

  • Environmental Physiology
  • Human Performance

Background:

  • Heat acclimation (HA) is a known physiological adaptation to hot environments, offering benefits like hyperthermia prevention.
  • The dependency of HA on environmental conditions and its impact on safety performance remain underexplored.

Purpose of the Study:

  • To investigate the effects of different environmental conditions on heat acclimation.
  • To evaluate the impact of heat acclimation on physiological, psychological, and safety performance.

Main Methods:

  • Thirty healthy males underwent heat acclimation training in a climate chamber simulating hyperthermal conditions (38°C, 40% RH).
  • Participants performed heat stress tests under six varying temperature and humidity conditions.
  • Physiological (rectal temperature, heart rate, sweat loss, skin temperature), psychological (thermal sensation), and safety performance (hazard avoidance) were assessed.

Main Results:

  • Training and environmental conditions differentially influenced heat acclimation.
  • Significant improvements in physiological and psychological strain were observed post-HA.
  • Heat acclimation enhanced participants' hazard awareness and emergency response capabilities.

Conclusions:

  • Optimized heat acclimation training under appropriate environmental conditions can enhance human safety performance.
  • Further research is warranted to fully elucidate the role of heat acclimation in safety performance.