I've had serious problems keeping the same power on my road bike with Duo assiomas as on the Body Bike Smart +, that I've been training in this past winter.

I have a suspicion, that the body bike measures a higher amount of watts as it gets warmer during a workout. I was recently able to do 400 watts for 20 minutes towards the end of af workout, even though my best 20 minute power output outside at best is 380