[Dynamics of ischemic skeletal soleus muscle contraction in rats]

The processes of change in the rate of generation of power response of artificially ischemic muscle using frequency modulated electrical efferent stimulation were investigated. A strain-gauge technique for registration of contraction process was used. Ischemia was induced by ligating main blood vessels of lower extremity. It is shown that ischemia causes a decrease in muscle performance and reduces maximum frequency of the stimulus signal, which leads to the titanic contraction level. It is shown that the lowering of ischemic muscle strength and reduction of the time that needed to establish a steady state depended on the time of discharge segment in stimulation pattern.