Originally Posted by Carl R
Comparing the "power release drill/retreaction turn" with harolds skiing the first thing I'm seeing is that the "power release drill/retreaction turn" transition seems to be tough on the legs. There's no moment of relaxation. Looks like he's doing leg workout.
How on earth can that be efficient?
How is Harald not up unweighting when his butt moves 3 feet vertically?
Skiing overly flexed like you do in the PR drill is not that hard on the legs since you are retracting your legs through the transition when there is no real pressure on skis. The problem I have seen with students preforming the drill is that they dont make proper use of the rebound to fuel their transition and they do not bend at their knees as low as they should to ease the pressure. Insted they bend a lot at the waist. All of this ads to fatique in the legs. But remember its a drill and not the way you should be skiing normally.
What causes the most fatique in your legs is constant pressure and not relaxing at all. In that sence the retraction turn is quite good because you get a moment of relaxation in your legs in the transition. Remember that we are talking serious performance here. You cannot compare it to cruising on a groomer. But you are right in a sence because constantly flexing and extending is more tiresome than not moving your legs at all.
He is not unweighting according to the popular skiing definition where upunweighting is a leg extention movement. He is also carving arc to arc so there is no need for unweighting but you are right because if you look at the classical physical definition of unweighting the CoM is moving up thus causing a moment of unweightiness as he lowers his body after "vaulting over". So you are right and/but you are wrong
. In such high performance skiing with so much tipping there is always CoM movement up and down.