The single-leg step down is a corrective exercise that builds knee stability, quad strength, and control through a functional range of motion. It is widely used in knee rehab programs and for addressing patellofemoral pain.

Setup

  1. Stand on a step, box, or stair with your right foot fully on the surface and your left foot hanging off the edge.
  2. Slowly bend your right knee, lowering your left heel toward the floor in a controlled manner.
  3. Lightly tap the left heel on the ground (or hover just above it), then drive through the right foot to return to standing.
  4. Keep your hips level throughout — do not let the pelvis drop on the lowering side.
  5. Perform 8–12 reps, then switch sides.

Coaching Cues

What to feel:

  • The quad and glute of the standing leg working hard to control the descent
  • Stability through the knee — it should track over the second toe

Common mistakes:

  • Letting the knee collapse inward (valgus) during the lowering phase
  • Dropping too fast — the eccentric (lowering) phase is the most important part
  • Hiking the hip on the standing side to compensate for weakness

Programming

Parameter Recommendation
Reps 8–12 per side
Sets 2–3 per side
Tempo 3 seconds down, 1 second up
Frequency 3–4 times per week
When to do it Lower body focus, post-shift recovery

Progressions

  1. Beginner: Use a low step (4–6 inches) with a wall nearby for balance.
  2. Intermediate: Standard step height (8 inches); slow 3-second eccentric.
  3. Advanced: Add a small dumbbell or increase step height; pause at the bottom.