Berryessa: ERG Mode Ok for 20 Sec Sprints?

Im doing my 1st 200% 20 second sprints today on the Wahoo Kickr. Should I do these in ERG or do them in Resistance?

I did notice a similar question that said switch to resistance for the sprints, but I dont know how to do that in terms of timing and all that.

It’s going to take a little bit to figure out what resistance % to use but I think you should do it in resistance. I have found that on my Tacx neo I need 18% and a big ring shift to get me there.

Holding steady wattage in erg for that sprint is going to be pretty hard to do and doesn’t really matter. ERG mode on a sprint has a tendency to put you in a death spiral if you start to waver early in the sprint, and the ERG adjustments will drag you down to a stop. With resistance your watts will drop but you’ll still be able to pedal and attempt to push the watts up, and then you can “coast” a little after the interval

Either mode can work. Some people prefer one or the other. The only way to know is to test for yourself.

Resistance takes some experimentation to find the right gearing and cadence.

ERG works well for these efforts in my experience.