Prolonged Whole Body Immersion in Cold Water: Hormonal and Metabolic Changes

Abstract

To characterize metabolic and hormonal responses during prolonged whole body immersion, 16 divers wearing dry suits completed four immersions in 5 deg C water during each of two 5-day air saturation dives at 6.1 meters of sea water. One immersion began in the Am (1000 hour) and one began in the PM (2200 h) to evaluate diurnal variations. Venous blood samples were obtained before and after completion of each immersion. Cortisol and (adrenocorticotropic hormone) levels demonstrated diurnal variation, with larger increases occurring after PM immersions. A greater than three-fold postimmersion increase occurred in norepinephrine (NE). Keywords: Diving, Epinephrine, Free fatty acid, Glucose, Lactate, Norepinephrine, Triiodothyronone uptake, Reprints, NE, ACTH, Immersion in cold water.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA223829

Entities

People

  • Caillin J. Ryan
  • D. J. Smith
  • P. A. Deuster
  • Thomas J. Doubt

Organizations

  • Naval Medical Research Center

Tags

DTIC Thesaurus Topics

  • Alcoholic Beverages
  • Analysis Of Variance
  • Biomedical Research
  • Blood Volume
  • Cold Water
  • Data Analysis
  • Dopamine
  • Endocrine Glands
  • Epinephrine
  • Fatty Acids
  • Hormones
  • Information Science
  • Norepinephrine
  • Statistical Analysis
  • United States Government
  • Volume
  • Water

Readers

  • Cardiovascular Physiology
  • Exercise and Sports Science.