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Recent advances in temperature regulation during exercise in humans
Federation Proceedings
|April 1, 1985
Summary
This study explains how active muscles transfer heat to the body core and how physiological mechanisms regulate body temperature. It highlights the critical role of body fluid status and blood volume in these thermoregulatory processes during exercise.
Area of Science:
- Physiology
- Thermoregulation
- Exercise Science
Background:
- Understanding heat transfer dynamics from active muscle to the body core is crucial for human physiology.
- Physiological regulatory mechanisms control heat transfer from the core to the skin and from the skin to the environment.
- Nonthermal factors, particularly body fluid status, significantly influence temperature regulation.
Purpose of the Study:
- To elucidate the dynamics of heat transfer from active muscle to the body core.
- To describe physiological regulatory mechanisms of heat transfer (core-to-skin, skin-to-environment).
- To emphasize the impact of body fluid status and blood volume on thermoregulation, especially during exercise.
Main Methods:
- Analysis of heat transfer dynamics in active muscle.
- Description of physiological regulatory mechanisms involved in thermoregulation.
- Examination of nonthermal factors affecting temperature control.
Main Results:
- Heat transfer from active muscle to the body core follows specific dynamics.
- Physiological mechanisms modulate heat transfer rates.
- Body fluid status and blood volume are critical determinants of thermoregulatory effectiveness.
- Interaction between blood pressure and temperature regulation during exercise, with cutaneous vasomotor tone predominating.
Conclusions:
- Body fluid status critically influences thermoregulatory mechanisms.
- Blood volume is essential for effective temperature regulation, particularly with improved physical condition.
- The interplay between cardiovascular and thermoregulatory systems is vital during physical exertion.