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The shivering response in animals and man.

J B Mercer1

  • 1Department of Arctic Biology, University of Tromsø, Norway.

Arctic Medical Research
|January 1, 1991
PubMed
Summary

Body cooling triggers a normal homeostatic response. However, factors like anesthesia, sleep, and circadian rhythm disruptions can impair shivering, leading to inadequate thermoregulation, especially in arctic shift workers.

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Area of Science:

  • Physiology
  • Thermoregulation
  • Homeostasis

Background:

  • Body cooling initiates a homeostatic, negative feedback response.
  • Metabolic adjustments typically ensure adequate thermoregulation.
  • Paradoxical responses like absent shivering or shivering at elevated temperatures are reported.

Purpose of the Study:

  • To investigate the physiological and homeostatic responses to body cooling.
  • To understand the reasons behind inadequate or paradoxical thermoregulatory responses.
  • To explore factors influencing thermoregulation, particularly in vulnerable populations.

Main Methods:

  • Review of physiological responses to body cooling.
  • Analysis of factors affecting thermoregulatory control.
  • Consideration of afferent thermal information from body core sensors.

Main Results:

  • The metabolic response to falling body temperature is usually appropriate and adequate.
  • Impaired shivering responses to hypothermia occur during anesthesia and certain sleep phases.
  • Rate of cooling and circadian rhythm disruptions can significantly impact thermoregulation.

Conclusions:

  • Thermoregulation is a complex homeostatic process influenced by multiple factors.
  • Anesthesia, sleep, and circadian disruptions can impair the shivering response to hypothermia.
  • Understanding these factors is crucial for populations exposed to extreme cold, such as arctic shift workers.

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