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[Modulation of the effects of dexamethasone in rat skeletal muscle by testosterone].

In experiments on young females white rats by means of methods of electromyography and ergography we investigated the efficiency of a testosterone-propionate for smoothing of negative effects of dexamethasone on skeletal muscle. It has been established that the chronic injection of dexamethasone causes the decreasing of amplitude of contraction of forward tibial muscle on 29.7-59.3% (after 5-25 injections) and the lengthening of the latent period of muscle's excitation on 18.5-16.5% (after 15-25 injections), whereas the complex application of testosterone and dexamethasone prevents the changing of these parameters. At the same time testosterone didn't provide the smoothing of negative influence of dexamethasone on muscle's resistance to fatigue development.