Which therapeutic modality utilizes electrical stimulation for muscle activation?

Neuromuscular Electrical Stimulation (NMES) is a therapeutic modality specifically designed to activate muscles through electrical stimulation. This technique involves the application of electrical currents to induce muscle contractions, helping to improve muscle strength, function, and reduce atrophy in individuals who may be unable to engage in regular physical activity due to injury or other medical conditions.

NMES works by delivering electrical impulses through electrodes placed on the skin over the target muscles. These impulses mimic the natural signals that the nervous system sends to muscles, causing them to contract. This process can be beneficial in rehabilitation settings, particularly for patients recovering from surgery, stroke, or injuries, as it helps maintain muscle tone and prevents deterioration.

In contrast, other modalities mentioned do not primarily focus on muscle activation through electrical stimulation. For instance, Transcutaneous Electrical Nerve Stimulation (TENS) is primarily used for pain relief rather than muscle activation. Magnetic resonance therapy and ultrasound therapy utilize different mechanisms (magnetic fields and sound waves, respectively) to promote healing and pain relief but do not activate muscle fibers in the same way that NMES does.