What is a characteristic of long wavelengths in electrotherapy?

Long wavelengths in electrotherapy are associated with low frequency and deeper penetration. This characteristic arises from the properties of electromagnetic energy; as the wavelength increases, the frequency decreases, which allows the electrical currents to penetrate the skin and underlying tissues more effectively.

In electrotherapy, longer wavelengths generate a current that has the capability to reach deeper structures in the body, making it particularly useful for therapeutic applications aimed at muscle stimulation, pain relief, and promoting healing in deeper tissues. The low frequency allows for a more gentle stimulation, which can be beneficial for sensitive areas or clients who may not respond well to higher frequency treatments.

This is contrasted with shorter wavelengths, which tend to have higher frequencies and are more energetic, typically resulting in more superficial effects; they stimulate at the surface level rather than reaching deeper tissues. Hence, the distinction is important in selecting the appropriate treatment modality based on the therapeutic goals.