Variability Index (VI)

Variability index (VI): algorithm showing how smooth or evenly paced an athletes power output was during a race or work out.

A properly paced time trial should have a VI value of 1.05 or less while a road race or criterium may have a VI as high as 1.1 or more.

Calculated by dividing Normalized Power by Average Power and can be found in the Map & Graph view


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