Heart Rate Variability as an Index of Physiological Strain in Hyperthermic and Dehydrated Rats

Abstract

Telemetry-equipped rats were subjected to hyperthermia (H, T sub c) = 41.5 deg C) with and without dehydration (D 9% loss of body weight) stresses. Time domain and spectral analysis of heart rate variability indicated that the dehydrated hyperthermic (DH) rats had increased sympathetic activity compared to H rats, and DH rats had decreased discriminated the more physiologically stressful of these states. These non-invasive measures of physiological strain discriminated the more physiologically stressful of these states.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2004
Accession Number
ADA453854

Entities

People

  • Amy M. Bastille
  • Candance B. Matthew
  • Ingrid V. Sils
  • Reed W. Hoyt
  • Richard R. Gonzalez

Organizations

  • United States Army Research Institute of Environmental Medicine

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Autonomic Nervous System
  • Blood Flow
  • Blood Volume
  • Body Temperature
  • Body Weight
  • Cardiac Arrhythmias
  • Cardiovascular Diseases
  • Cardiovascular Physiological Phenomena
  • Cardiovascular System
  • Data Analysis
  • Data Science
  • Frequency
  • Frequency Bands
  • Health Services
  • Heart Rate
  • Nervous System
  • Physiology

Fields of Study

  • Biology
  • Psychology

Readers

  • Exercise and Sports Science.
  • Neuroscience
  • Speech Processing/Speech Recognition.