Tyrosine Supplementation Attenuates Cognitive and Psychomotor Deficits in Cold Environments

Abstract

In rats, dietary supplementation with the amino acid tyrosine (TYR) prevented depletion of central catecholamines observed during acute environmental stress. Concomitant changes in the animals' behavioral and cognitive responses to stress suggest that TYR might have similar effects on cognitive, psychomotor, and physical performance in humans exposed to environmental stress. This study evaluated the effect of TYR supplementation on cognitive, psychomotor, and physical performance during and following a cold water immersion that lowered body core temperature. Volunteers completed a control trial (CON) in warm (35-deg C) water and two cold water trials (10-18-deg C), each spaced a week apart.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2009
Accession Number
ADA507113

Entities

People

  • Caroline Mahoney
  • Catherine O'brien
  • John W Castellani

Organizations

  • United States Army Research Institute of Environmental Medicine

Tags

Communities of Interest

  • Biomedical
  • Human Systems
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Amino Acids
  • Blood
  • Body Temperature
  • Body Weight
  • Catecholamines
  • Cold Water
  • Computers
  • Department Of Defense
  • Information Processing
  • Measurement
  • Pattern Recognition
  • Performance Tests
  • Psychomotor Performance
  • Reaction Time
  • Statistical Analysis
  • United States Special Operations Command

Fields of Study

  • Biology
  • Psychology

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Cardiovascular Physiology
  • Thermal Physics or Thermal Science.

Technology Areas

  • Space