Originally Posted by XJguy
Muscle size and power is generally slow twitch fibers, they tire quickly. What you want to do is enhance your endurance, the fast twitch fibers, its the muscles that the professional endurance athletes have greatly developed. The key to developing these muscles is intensity, you can lift everything is sight, have quads to make a bodybuilder envious, if you dont train your endurance by doing high intensity exercises you will benefit little from your training. High intensity means every stroke, every pedal, every move is done at 85% of your maximum output. Incidentally the same principle applies to putting on mass as well, there are books written on the subject and it is the best most efficient way to develope one's body. Just have to be up to the task, usually its just mental.
Completly agree. Skiing is a bit strange to try and get in shape for, because you don't need JUST endurance, you need power strength, but you need that power strength to be able to last.
As far as high intensity workouts that combine power strengh with endurance, I have found mountain biking to be the best way to get into shape for skiing. Way more than road biking actually, because mt biking, you HAVE to sprint sometimes, to make it over certain obstacles, up a little hill, etc. Since I find mountain biking pretty damn fun too, it is easy for me to push myself longer, harder, and to just keep sprinting. Also, mt biking does a great job of building core strength, and improving balence as well.
Lifting wieghts really doesn't do all that much for skiing shape, unless its just a supplement to a lot of other excersize
EDIT: Other things I do to get in shape:
PLyometrics as someone allready mentioned. Holding small wieghts in your hands (anywhere from 2-10lbs a hand) really does a great job of tiring you out, and makes balencing a little trickier too.
I like to go on short (1-2 mile) steep hikes, with a big internal frame backpack. I load it up with about 40lbs of full water bottles, and when I get to the top, I dump out the water so as to not kill my knees on the way down. It also makes sure you'll never go thirsty.
Longer hikes, as far as I can handle, without any extra wieght.
Working out on a boxing bag is GREAT for core strength. Most practice bag gloves give you enough dexterity to hold small wieghts in your hands while you box. I switch back and forth between no weights, 2lb, and 5lb wieghts.
I don't do any of this near as much as I should, especially in the fall once I start going to school, but every little bit helps.