Long term effects from the summit series 1972?

The Summit Series was an eight-game Series of Ice Hockey, played between the Canada National team and the USSR in 1972. At the time, Canada had a long dominance of the sport and the Soviets were rising to the top as international competitions were disallowing professional players of Canada. Featuring a team of professional NHL all-stars, Canada was expected to not lose a single game in the series. Then came the upset, as USSR won not one, but three games out of eight, two of them on Canada's ice. As an effect of this, there was an immediate change in the NHL off-season training and physical conditioning, adapted with Soviet techniques. The Series would go on as a tradition for years to come, until 1991.

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