What is the role of ramp time in NMES and TENS?

• A. Ramp time should be increased to 10-20 seconds for most patients
• B. Ramp time has no effect on comfort
• C. Ramp time gradually increases current at onset to improve comfort and tolerability; typical ramp is 1-2 seconds
• D. Ramp time is for reducing electrode contact

Answer: (C)

Ramp time controls how quickly the stimulation current rises at the start of a burst. It’s there to prevent a sudden, uncomfortable jolt when the device turns on, helping the person tolerate the stimulus and progress with therapy. In practice, a ramp of about 1–2 seconds is typical because it smooths onset without delaying the therapeutic effect too much; some patients may need a bit shorter or longer ramps based on comfort, but 1–2 seconds is a common default. Longer ramps generally feel more comfortable but slow down the onset of the treatment, while very short ramps can be abrupt and less tolerable. Ramp time is about how the current builds up, not about electrode contact or skin preparation.