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

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

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 comp...

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Bibliographische Detailangaben
Hauptverfasser: Matthew, Candance B, Bastille, Amy M, Gonzalez, Richard R, Sils, Ingrid V, Hoyt, Reed W
Format: Report
Sprache:eng
Schlagworte:
Anatomy and Physiology
AUTONOMIC NERVOUS SYSTEM
BODY WEIGHT
DEHYDRATION
HEART RATE
HYPERTHERMIA
INDEXES
Physical Chemistry
PHYSIOLOGICAL EFFECTS
RATS
SPECTRUM ANALYSIS
STRAINS(BIOLOGY)
STRESSES
SYMPATHETIC NERVOUS SYSTEM
TIME DOMAIN
VARIATIONS
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Beschreibung
Zusammenfassung: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. Published in Journal of Thermal Biology, v29 p211-219, 2004.