Summary
Experiments were carried out on frogs and rats, and a study was made of the effect of the pessimum condition on the recovery of contractility of a fatigued muscle subjected to direct and indirect stimulation. When the pessimum condition was induced by high frequency stimuli, muscular excitability increased, and with low frequency stimulation it fell. When in the pessimum condition muscular excitability is reduced, the contractility of a fatigued muscle in response to a direct stimulus is accelerated; however, a pessimum state in which excitability is augmented is followed by a delayed restoration of contractility elicited by a direct stimulus, though there is no delay when the stimulus is indirect.
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Translated from Byulleten', Éksperimental'noi Biologii i Meditsiny, Vol. 53, No. 5, pp. 17–22, May, 1962
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Tanin, S.A. The influence of the pessimum on the recovery of contractility of skeletal muscle. Bull Exp Biol Med 53, 498–502 (1963). https://doi.org/10.1007/BF00786730
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DOI: https://doi.org/10.1007/BF00786730