10/06/2026
Part 1 covered why winging it and feeling “fine” last season doesn’t mean your training was sufficient. Here is some of the physiology behind why your summer sport doesn’t prepare you for ski season.
Running cycles through contractions. Concentric on the flats and climbs, eccentric on the way down.
Skiing is mainly eccentric quasi-isometric. Meaning you hold a stance while oscillating between concentric and eccentric action through each turn.
This nuanced contraction shapes everything downstream, including energy system demands. Clearing metabolites depends on perfusion, and a muscle that stays contracted limits blood flow out and fresh blood flow in. That is a big part of the burn you feel on a long ski run.
This is just one of the reasons to train specifically for skiing. Stayed tuned for the next training tip.