The reason why the USSR "caught up" is simple IMO, and before ppl start bashing me I´d like to say that this a theory and may very well be wrong
. The russians were insanely competitive at that time, and by that i mean, they trained like idiots for 11 months of the year while playing their 40ish games of league hockey. The players were taken away from their families to train 300-some days of the year. From what Ive read and heard the NHL stars in the 60s-mid 70s weren´t as serious about their fitness (so I dont aggrivate anyone I want to add that I´m sure this didn´t apply to all players but some atleast). For instance i think i read somewhere that Guy Lafleur (might have been Gilbert Perreault, not 100% sure) used to smoke during games (between periods), and that doesnt do your fitness so good
. And the Canadians (again not sure this applies to all players, i know Bobby Clarke had to care about his fitness due to diabetes) didnt train very hard during the offseason while the russians would be at training camp all the time.
In short i think the Russians simply trained harder and alot more often and took their fitness alot more seriously and continously improves their technique. Again, this is my theory and id actually like some feedback on it, and id also like to know if the rumor about perreault/lafleur smoking is true, or the offseason letgo of general fitness.