When using biphasic pulsed current for knee extension, what should the therapist adjust to make the current more tolerable while maintaining therapeutic effect?

Adjusting the pulse duration when using biphasic pulsed current can make the current more tolerable while still maintaining the therapeutic effect. Pulse duration refers to the length of time each pulse lasts. Shorter pulse durations can often be perceived as less intense by the patient, reducing discomfort while still targeting the desired muscle groups for stimulation during rehabilitation, such as knee extension.

Maintaining an effective pulse duration is crucial because it influences both the strength of muscle contraction and patient comfort. Too long of a pulse duration can lead to increased discomfort without necessarily enhancing the therapeutic benefits. By fine-tuning this variable, the therapist can ensure that the treatment remains effective in achieving the desired muscle response while preventing excessive discomfort for the patient, thereby enhancing overall adherence to the treatment protocol.

Adjusting the current intensity might risk either reducing the effectiveness of the treatment or causing discomfort if set too high. Current polarity typically does not affect tolerability in the same way and is more applicable in specific clinical scenarios. Pulse rate influences the frequency of muscle contractions but does not directly correlate to comfort when maintaining therapeutic goals.