Which of the following is the intended use of Russian current?

• A. Pain modulation
• B. Edema reduction
• C. Strengthening healthy muscles
• D. Wound healing

Answer: (C)

The main idea tested is that Russian current is used to strengthen muscles by actively contracting them. This modality delivers a medium-frequency alternating current in short bursts, which makes it easier for the nervous system to recruit motor units and produce strong, tetanic contractions. Those repeated, controlled contractions provide the stimulus the muscle needs to adapt by getting stronger, which is especially valuable in rehab after injury or in situations of muscle weakness.

This isn’t primarily used for pain relief or wound healing. Pain modulation usually relies on other forms of stimulation that target sensory pathways (like TENS), and wound healing therapies use currents designed specifically to influence tissue repair. While strong muscle contractions can indirectly help with edema by promoting fluid movement, the defining purpose here is strengthening healthy or weakened muscles.