Just out of curiosity, what the heck is a “Polar Road Spinter”?
This implies several other sprinter categories, e.g., Southern, Eastern, Hot Weather…
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That is the Specificity Rating of your ride - has nothing to do with the temperature 
Without looking at a Polar Road Sprinter ride power data, I could tell you that it would involve plenty of short, max effort sprints with very, very light pedalling or coasting between efforts.
Garmin Road Sprinter, Wahoo Road Sprinter…
sounds just like an ice bear to me
Everyone can sprint if they train for it.
This user relied on a SMART workout to get there – Xert - Sledghammer Workout Details
A change in sprint position also made a difference along with an aero skinsuit.
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