Originally Posted by samurai
And it's Make that hour of exercise count for something other than just losing weight or building quads. build the right quads with the right amount of fast-twitch vs. slow-twitch muscle fibers. by no means should you jump off your roof.
Second, the fast-twitch/slow-twitch thing - it's genetic, man. If we look at great athletes, one can see that a sprinter is explosive, even before he took up the sport that makes him worth studying. Skiers who are fast-twitch were fast in the 100 when they were in high school. You can train to make a muscle faster, but not much. You can train the skill to make you faster, by working with a speed trainer. They can teach you how to be faster and to improve your skill. They can't make you fast twitched when you are not.
Specificity is complicated stuff and it has it's place in sport. I focused on strength train with a swim team and the results were poor. All the key muscles got stronger, but it really screwed up their skill. It's a sport of skill not strength. Skiing is like that too. It is a sport of skill with all the athletes owning thick legs.