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Related Experiment Videos

The metabolic response to skin temperature.

G Kuhnen1, C Jessen

  • 1Physiologisches Institut der Universität, Giessen, Federal Republic of Germany.

Pflugers Archiv : European Journal of Physiology
|September 1, 1988
PubMed
Summary

This study investigated how skin temperature affects metabolic rate in goats during cold exposure. Findings reveal a complex relationship, not solely driven by cold receptors, suggesting muscle metabolism plays a role.

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Area of Science:

  • Physiology
  • Environmental Medicine

Background:

  • External cold exposure triggers metabolic responses.
  • Understanding the specific contribution of skin temperature to metabolic rate is crucial for thermoregulation research.

Purpose of the Study:

  • To quantify the metabolic response attributable to skin temperature in conscious goats.
  • To elucidate the relationship between varying skin temperatures and metabolic rate while maintaining constant core temperature.

Main Methods:

  • Metabolic rate was measured in 5 goats across a range of controlled skin temperatures (13-41°C) using a shower bath.
  • Core body temperature was maintained at 38.8°C via heat exchangers acting on arterial blood.
  • Goats were conscious and closely clipped to standardize skin conditions.

Main Results:

  • A biphasic response of metabolic rate to skin temperature was observed.
  • Above 25-30°C, metabolic rate decreased with falling skin temperature (-0.34 ± 0.07 W/kg·°C).
  • Below 25-30°C, the metabolic rate plateaued or decreased with further cooling, deviating from simple cold receptor response.

Conclusions:

  • The metabolic response to skin temperature is complex, involving more than just cutaneous cold receptor activity.
  • Non-specific effects on muscle metabolism likely contribute to the observed relationship.
  • Thermoregulation involves intricate interactions between peripheral and central factors.

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