Previously during my warm-up routine, I had been exercising with the stimulation frequency around 40 Hz, and a pulse width of around 300 µs. Now I have made a change, and increased the pulse width to 500 µs. Immediately I noticed an improvement in the warm-up results: at each level of increased resistance, the stimulation required is lower. A couple of times I have been able to go all the way up to a resistance of 5 Nm before the stimulation hits 100%. Why is this? A higher pulse width causes stimulation to reach more muscle fibers. Something to consider for those of you that are riding FES bikes.
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