[Dynamics of changes in integral parameters of muscle tissue heat resistance after preliminary heating at the damaging temperature in various frog species].
The dynamics of mean heat resistance of the Rana temporaria m. sartorius against heating at 38 degrees C were studied. The following indices were used: heat resistance (HR), coefficient of correlation between the initial HR level of the muscle and the magnitude and direction of its change, and coefficient of correlation between the heat resistance of the paired muscle and HR variability under the influence of preliminary heating at 38 degrees C for 5-180 min. Almost all these indices showed a biphasic pattern of changes with reference to the dose of preliminary treatment. The dynamics of the coefficient of correlation between the initial HR of muscle and its change and the coefficient of correlation between the resistance of paired muscle and HR variability provides much more information about both the pattern of muscle reaction to preliminary heating and muscle functional state than the mean HR level does.
Mironova
A P
AP
Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia.
D000222:Adaptation, Physiological; D000818:Animals; D001833:Body Temperature Regulation / Q000502:physiology; D006358:Hot Temperature; D008297:Male; D018482:Muscle, Skeletal / Q000294:innervation / Q000502:physiology*; D011896:Rana temporaria; D013045:Species Specificity