What is a common frequency range for electrical stimulation units used in therapy?

The common frequency range for electrical stimulation units used in therapy typically falls between 20 to 100 Hz. This frequency range is particularly advantageous for therapeutic applications as it effectively stimulates muscle contractions while also providing relief from pain.

In this range, the electrical impulses can produce strong and effective neuromuscular stimulation, making it suitable for various therapeutic interventions, including muscle re-education and pain management. Frequencies below 20 Hz tend to produce lower muscle contractions, and although they may be beneficial in specific contexts, they are generally less effective for therapeutic purposes. On the higher end, frequencies above 100 Hz can lead to muscle fatigue quickly, making them less suitable for continuous therapeutic use.

Overall, the 20 to 100 Hz range maximizes the effectiveness of muscle stimulation without overwhelming the muscle or the nervous system, which is why it is the standard for therapeutic electrical stimulation units.