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Restoration of thermoregulation after exercise
1Human and Environmental Physiology Research Unit, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada gkenny@uottawa.ca.
Journal of Applied Physiology (Bethesda, Md. : 1985)
|November 25, 2016
Summary
Exercise in heat raises body temperature, triggering cooling responses. Nonthermal factors and impaired recovery can prolong heat stress, impacting athletic and occupational safety.
Area of Science:
- Exercise Physiology
- Thermoregulation
- Environmental Physiology
Background:
- Exercise, particularly in hot conditions, elevates core body temperature.
- Autonomic thermoregulatory responses, including skin blood flow and sweating, are activated to dissipate heat.
- Nonthermal factors (sensory receptors, age, sex, fitness, disease) and phenotypic factors also influence heat dissipation during exercise.
Purpose of the Study:
- To review current knowledge on postexercise thermoregulation restoration.
- To identify factors influencing the return of body core temperature to resting levels postexercise.
- To highlight strategies for managing heat stress in athletic and occupational settings.
Main Methods:
- Literature review of thermoregulation during and after exercise.
- Analysis of autonomic and nonthermal influences on heat loss.
- Examination of factors affecting postexercise recovery and heat stress management.
Main Results:
- Thermoregulatory responses are initiated by temperature-sensitive receptors.
- Nonthermal factors significantly impact heat dissipation during exercise.
- Postexercise impairments in thermoregulation can lead to prolonged core temperature elevation and cardiovascular disturbances like postexercise hypotension.
Conclusions:
- Restoration of thermoregulation postexercise is complex and influenced by multiple factors.
- Delayed heat dissipation postexercise necessitates careful management strategies.
- Understanding these factors is crucial for preventing heat-related illnesses in various settings.
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