Landing knee collapses inward
Maximum single-leg force on landing exposes valgus completely.
Overactive muscles
Adductor complexTFL
Corrective work
Foam RollAdductors↗Foam RollTFL↗StretchButterfly adductor stretch↗Plyo · Lower Body
Single-Leg Depth Jump
Coaching cues
- Step off a box onto one foot; land and immediately jump as high as possible
- Single-leg contact only — the opposite leg does not touch the floor
- Arms drive up on the jump; absorb with a hip hinge on the landing
- Highest demand unilateral reactive drill — master bilateral first
Common faults 2
Second foot touches to help — not truly single-leg
Bilateral support removes the unilateral reactive demand.
Overactive muscles
GastrocnemiusSoleus
Corrective work
Foam RollCalves↗StretchWall calf stretch↗