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Temperature regulation during exercise: directions--1983.

C V Gisolfi

    Medicine and Science in Sports and Exercise
    |January 1, 1983
    PubMed
    Summary
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    During exercise, core body temperature (Tc) rises proportionally to workload, triggering sweating and vasodilation. This thermoregulation involves complex interactions influencing skin blood flow, even with non-thermal factors and hydration state.

    Area of Science:

    • Exercise Physiology
    • Human Thermoregulation
    • Autonomic Nervous System Function

    Background:

    • Core body temperature (Tc) increases during steady-state exercise, independent of ambient temperature within a specific range.
    • This temperature rise is proportional to relative workload and stimulates sweating and cutaneous vasodilation.
    • Thermoregulatory responses during rest and exercise share fundamental principles of heat production and dissipation.

    Purpose of the Study:

    • To explain the fundamental mechanisms of core temperature regulation during exercise.
    • To investigate the control of sweating and skin blood flow (SBF) in response to thermal and non-thermal stimuli.
    • To explore the influence of hydration state on thermoregulatory effectors.

    Main Methods:

    • Analysis of core temperature changes in relation to exercise intensity.

    Related Experiment Videos

  • Examination of sweating and skin blood flow responses.
  • Consideration of cardiovascular and hydration influences on thermoregulation.

    • Main Results:

    • Core temperature rise during exercise is proportional to relative workload.
    • Sweating and SBF changes are primarily driven by core and skin temperatures, but non-thermal inputs exist.
    • Skin blood flow regulation is complex, influenced by both cardiovascular and temperature factors, and significantly affected by hydration status.

    Conclusions:

    • Exercise thermoregulation is a complex process involving core temperature, sweating, and skin blood flow.
    • Non-thermal factors and hydration significantly modulate these responses.
    • Future research using animal models is needed to understand the neurochemistry of central effector mechanisms in thermoregulation.