Electrical stimulation used for the purpose of retarding muscle atrophy is most effective when using which of the following parameter settings?
A. A frequency of 80 pps and a high-voltage monophasic current
B. A frequency of 20 to 40 pps and a high-voltage monophasic current
C. A frequency of 30 to 60 pps and a high-frequency biphasic current
D. A frequency of 30 to 60 pps and a low-voltage monophasic current
Answer: C
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