Short-Arc Quad over Bolster
strengthenkneeactivefront-splits

How to do it
- Lie on your back with one knee supported over a bolster, foam roller, or rolled towel.
- Keep the back of the knee resting on the support.
- Tighten the front thigh muscle.
- Slowly straighten the knee until the heel lifts and the leg becomes almost straight.
- Pause briefly at the top.
- Lower the heel back down with control.
Form cues
- Keep the thigh resting on the bolster; only the lower leg should move
- Fully squeeze the quad at the top
- Do not lift the whole leg from the hip
- Move slowly and avoid locking the knee aggressively
Dosage
3 × 15 reps per side
- Frequency: 3–5×/week
- Volume: 2–3 sets × 10–15 reps per side
- Optional hold: 2–5 s squeeze at the top.
Muscles worked

Strengthens: quadriceps, rectus femoris