[Evaluation of the temperature effect on contractility of frog myocardium].
Dynamics of the parameters of mechanical activity of the frog isolated myocardium was studied under conditions of temperature variations. Within the temperature range of 0-35 degrees C the temperature decrease leads to a rise in the strength of contractions. Meanwhile the velocity of contractions reaches its optimum value at 20 degrees C. The velocity of contractions proved to be a more adequate and sensitive criterion for evaluating the cold effect on contractility than the strength of contractions. From the analysis of the evidence obtained it is concluded that muscle contractility of the heart is depressed on cooling.
D000818:Animals; D001001:Anura; D007700:Kinetics; D009200:Myocardial Contraction; D011896:Rana temporaria; D013696:Temperature
K otsenke vliianiia temperatury na sokratimost' miokarda liagushki.