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  • Title: [Potentiation and restitution of the myocardial contractility of rats adapted to physical stress].
    Author: Pfaĩffer K, Kapel'ko VI, Meerson FZ.
    Journal: Biull Eksp Biol Med; 1976 Jul; 82(7):780-2. PubMed ID: 953329.
    Abstract:
    Initial contractile amplitude of the myocardial strips determined the inotropic response to paired stimulation. The higher the initial amplitude -- the lesser the degree of potentiation and the greater the degree of contraction restitution. At equal amplitudes the myocardial strips taken from rats adapted to exercise showed a greater degree of potentiation and a lesser degree of restitution as compared to control. These changes appear to be due to the changes in the ionic transport in the myocardial cells.
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