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Related Experiment Videos

Peripheral cold acclimatization in Antarctic scuba divers.

S A Bridgman1

  • 1British Antarctic Survey, Cambridge, England.

Aviation, Space, and Environmental Medicine
|August 1, 1991
PubMed
Summary

Scuba divers in Antarctica showed no peripheral acclimatization to cold. Their cold-induced vasodilatation responses were similar to non-cold-adapted individuals, suggesting whole-body cooling may inhibit adaptation.

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Area of Science:

  • Human Physiology
  • Environmental Medicine
  • Diving Science

Background:

  • Peripheral acclimatization to cold is crucial for individuals exposed to low temperatures.
  • Scuba divers in polar regions face prolonged cold water immersion.
  • Understanding cold adaptation in divers is important for safety and performance.

Purpose of the Study:

  • To investigate peripheral cold acclimatization in scuba divers at Signy Station, Antarctica.
  • To compare cold adaptation responses between divers and non-diver controls.
  • To identify factors influencing peripheral cold acclimatization in divers.

Main Methods:

  • Monthly laboratory tests involving 30-minute index finger immersion in cold water.
  • Measurement of finger pulp temperature and onset of cold-induced vasodilatation (CIVD).
  • Subjective pain ratings and statistical analysis (ANOVA) for comparison.

Main Results:

  • No significant differences in finger temperature or CIVD onset were found between divers and non-divers.
  • Divers exhibited responses typical of non-cold-adapted Caucasians.
  • The study found no evidence of peripheral cold acclimatization in the surveyed divers.

Conclusions:

  • The lack of peripheral acclimatization may be due to whole-body cooling effects or insufficient cold exposure.
  • Further research is needed to determine the necessary duration, frequency, and severity of cold exposure for acclimatization.
  • Findings suggest current diving practices may not induce significant peripheral cold adaptation.

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