Increasing cycling torque at the same power output shifts demand to the cardiovascular system and may increase CO2 production.

“torque you're switching more of the demand uh in in the direction of the the cardiovascular ular system I mean remember people used to talk about this all the time between Lance and Yan right one was pushing 95 to 100 RPM the other was pushing 65 to 70 rpm they're putting out the same power but two different strategies do do you do you think about that distinction for for the cyclist I again again yes well yes I do uh and this is also something that's very easy to measure so for example if you're out and you put on a V2 master and you go for a certain power output and you drop for example that Cadence or you bring that's right that's right yeah you can basically make V2 the metric that helps you decide and that should correspond most to to fatigue ex exactly so well actually the interesting thing is that what you'll see now is that you actually will you might actually bring down the V2 the V2 as a function of that you're increasing the torque increasing the torque uh so you get a little bit better ratio there but what can happen actually as a functional is that you also see that CO2 comes up a little bit more so you actually are shifting Shifting the substrate that's right exactly so and of course the mechanism behind this is probably also like it's fairly easy to rationalize and simply because when you're are starting to use a higher torque you are activating a larger crosssectional area of your of of of your muscles so maybe you're also recruiting more uh type two fibers versus only type one fibers as well right so you're becoming much more glycogen dependent as you make that recruitment yeah it's not it's not en black white like that but in general yes”