What ramp time is recommended when programming NMES for wrist extensor strengthening?

• A. 1–2 seconds
• B. 0 seconds
• C. 3–4 seconds
• D. 5–6 seconds

Answer: (A)

Ramp time is how long it takes for the current to rise from zero to the set peak at the start of a contraction. For wrist extensor strengthening, a gradual ramp of about 1–2 seconds provides a smooth, tolerable onset, which helps the muscle recruit more predictably and reduces abrupt, painful sensations or joint torque. This makes it easier for the patient to perform the targeted contraction consistently and with less anxiety or guarding.

If the ramp is zero, the contraction starts abruptly, which can be uncomfortable and harder to control. If the ramp is too long, like 3–4 or 5–6 seconds, the contraction onset becomes too slow, wasting time and reducing the peak force you can develop during the session, which is not ideal for strengthening.