What does NMES refer to?

• A. High-frequency stimulation to brain
• B. Electrical stimulation for sensory feedback
• C. Application of pulses of electrical current to targeted muscle groups to stimulate active motion, strengthen muscles, and prevent muscle atrophy
• D. Ultrasound to promote tissue perfusion

Answer: (C)

NMES stands for neuromuscular electrical stimulation, a modality that delivers controlled electrical pulses through surface or implanted electrodes to activate the motor nerves that go to specific muscles. The purpose is to cause muscle contractions that enable active movement, help strengthen the muscle, and prevent or reduce disuse atrophy when a patient can’t or shouldn’t perform voluntary contractions. This focus on producing motor activation sets it apart from brain stimulation techniques, which target central nervous system structures, and from sensory-focused therapies that aim to modulate sensation or pain without inducing meaningful muscle contractions. It’s also distinct from ultrasound therapies, which use sound waves to influence tissue healing and perfusion rather than electrically stimulating muscles. So, NMES involves applying pulses of electrical current to targeted muscle groups to elicit active movement, build strength, and prevent atrophy.