Originally Posted by Lisamarie
However, the core strength needs to be dynamic. Essentially, skiing is a game of catch with your center of mass. For this reason, core activation needs to be combined with agility. If someone simply has core strength, they may have good balance, but there skiing can be somewhat static.
First, when I ski the bumps for the day, a few hours, I am always beat but not as beat as one might think. Extension is a movement and does not require that much muscle to get where they need to be. This assumes that technique is good. Absorption is similar, you are dropping down and assisting that motion with muscle. It's finesse more than force. Yes it is active in nature and requires a lot of motion, but it should not be inefficient and strength oriented. The repetitive motion required of the hip flexers/quads and hams/glutes is exhausting over time but good skiers do it all day long.
Stabilizing the upper body should be as needed. I don't really like the term core because it implies an entity unto itself - which the abs for example are not. I feel sore in the mid-section the next day, but that is more a matter of clenching from fear than proper technique