Forget Antarctica. You can't go to Antarctica unless you're some puffed-up research scientist. And there's nothing there but a bunch of damn penguins and some ice.
For real cold weather go to Siberia. You can go to Siberia as long as the Russians give you a visa.
There are many great hockey players from Canada, and many great hockey players from Russia, but there are none at all from Antarctica. That should tell you something about who has the best cold weather.
The Russians are also the only nation on Earth whose cold weather slaughtered an entire army of Germans. The Germans would have had no trouble invading Canada.