Summary
Indirect stimulation of the rat neuromuscular preparation in situ by square-wave and saw-tooth electric current impulses with the frequency of 50–52 cycles/second, 10 msec duration causing submaximal or initial maximal responses gives rise to a peculiar tetanic contraction.
The usual increase of lactic acid in muscle tissue is absent in this contraction: the quantity of inorganic phosphorus in it even decreases compared with the value during the initial condition of rest, while the development of fatigue is retarded as compared to the directly stimulated muscle. The peculiarities of tetanus are connected with increased working capacity of the muscle as a result of the form of activity described above.
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Kondrashova, M.N. Increased work capacity of muscle on stimulation through the nerve and the causes of this phenomenon. Bull Exp Biol Med 46, 806–810 (1958). https://doi.org/10.1007/BF00837792
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DOI: https://doi.org/10.1007/BF00837792