Cᵣᵣ ranges from 0 to 10%, default is 10.7%. If using the AutoTerrain feature, assume a baseline value for smooth terrain (lower limit), as the app will generally increase the coefficient on rougher terrain.
Power exerted during activity, due to drag forces, altitude change, etc. Negative means power gain, e.g. when going downhill or braking. When in kcal/h or kJ/h, it also takes efficiency and BMR into account.
Purely mechanical work sexpent for this activityded (disregarding thermal efficiency and BMR). For bikes this can be regarded as a measure of chain wear - a standard bicycle chain will last about 100 MJ, for motorcycles about 1 GJ.
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