Neuromuscular Electrical Stimulation (NMES) units are designed to:

Neuromuscular Electrical Stimulation (NMES) units are designed to:

• A. Elicit a muscle contraction of moderately high intensity with relatively little patient discomfort, typically using biphasic currents with a duty cycle.
• B. Deliver anti-inflammatory drugs transcutaneously.
• C. Heat tissue to reduce stiffness.
• D. Provide sensory nerve stimulation without muscle contraction.

Answer: (A)

NMES aims to activate motor nerves to produce a controlled muscle contraction, not just sensation or heat. By using biphasic currents, the stimulation is more comfortable for the person and allows precise control of the contraction without excessive skin irritation or polarization. The duty cycle (the on/off timing) lets the muscle contract strongly while providing brief rest periods to reduce fatigue, so you can achieve a moderately high-intensity contraction that the patient can tolerate. This combination—motor-level activation, biphasic waveform, and an appropriate on/off pattern—specifically targets strengthening and re-education of the involved muscle. It’s different from therapies that deliver drugs through the skin (transcutaneous pharmacologic delivery), apply heat to tissues, or provide only sensory stimulation without causing muscle contraction.

NMES aims to activate motor nerves to produce a controlled muscle contraction, not just sensation or heat. By using biphasic currents, the stimulation is more comfortable for the person and allows precise control of the contraction without excessive skin irritation or polarization. The duty cycle (the on/off timing) lets the muscle contract strongly while providing brief rest periods to reduce fatigue, so you can achieve a moderately high-intensity contraction that the patient can tolerate.

This combination—motor-level activation, biphasic waveform, and an appropriate on/off pattern—specifically targets strengthening and re-education of the involved muscle. It’s different from therapies that deliver drugs through the skin (transcutaneous pharmacologic delivery), apply heat to tissues, or provide only sensory stimulation without causing muscle contraction.