Fatigue in the Back: How the Body Fails and What to Do About It

---

It's the fifth slalom run of the day. The knees start to cave in, you end up a bit late in gates you usually handle well.

Fatigue Is Not a State – It's a Process

Phase 1 – Neuromuscular Fatigue: RSI deteriorates relatively early.

Phase 2 – Isometric Endurance Begins to Wear: Hips fall back, position rises.

Phase 3 – Cognitive Fatigue: Initiations become reactive, lines become defensive.

What You Actually See in Video

Progressive knee valgus, increased back positioning, lost tuck position, late initiations, reduced gate boxing.

Why Fatigue Hits Harder at the End of the Competition Season

Cumulative fatigue during the competition season. Planning issues.

How to Train Fatigue Resistance

Aerobic capacity as fatigue protection, isometric endurance training, late runs in training, sleep optimization.

---

Sources: Breil, F.A. et al. (2010). Boraxbekk, C-J. et al. (2026). Müller, L. et al. (2017).

---

See Your Fatigue Patterns – and Train Them Away

Alpine Mastery identifies fatigue indicators in your video clip.

👉 Analyze your runs and get a targeted training program