Russian current is what percent of MVIC?

Russian current is what percent of MVIC?

• A. 150-170%
• B. 110-130%
• C. 50-70%
• D. 200-210%

Answer: (B)

In NMES, the intensity of stimulation is often described as a percentage of the muscle’s maximum voluntary contraction (MVIC). Electric stimulation can recruit motor units differently from voluntary effort and can produce a stronger, tetanic contraction than the same muscle can generate voluntarily. For Russian current, therapists commonly set the stimulus to produce a strong contraction that exceeds what the patient could voluntarily achieve, typically around 110–130% of MVIC. This provides a robust strengthening stimulus while still being monitored to avoid fatigue or overload. The lower ranges would yield too weak a contraction for effective strengthening, and a range like 200–210% would be excessive and risky.

In NMES, the intensity of stimulation is often described as a percentage of the muscle’s maximum voluntary contraction (MVIC). Electric stimulation can recruit motor units differently from voluntary effort and can produce a stronger, tetanic contraction than the same muscle can generate voluntarily. For Russian current, therapists commonly set the stimulus to produce a strong contraction that exceeds what the patient could voluntarily achieve, typically around 110–130% of MVIC. This provides a robust strengthening stimulus while still being monitored to avoid fatigue or overload.

The lower ranges would yield too weak a contraction for effective strengthening, and a range like 200–210% would be excessive and risky.