Videre non videri
Join Date: Sep 2004
Location: Gothenburg, Sweden
Posts: 3,208
Bikes: 1 road bike (simple, light), 1 TT bike (could be more aero, could be lighter), 1 all-weather commuter and winter bike, 1 Monark 828E ergometer indoor bike
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My threshold HR has been essentially the same for the three tests, but the threshold power has varied widely (a range of almost 50 W). My assumption is therefore that the threshold HR, for me and for this purpose, is pretty much fixed. Power at the threshold is obviously not, and since the latest test was in May, I don't think that that threshold power is representative of my current fitness level.
Different intensities do different things in terms of adaptation. That's why I want to hit the right level for this.