Exercise guide
Resistance Band Standing Single Leg Knee Extension
- Beginner
- Isolation
- Rep-based
- Lower legs
- Upper legs
This isolation exercise targets the quadriceps, specifically the vastus medialis (VMO), to improve knee stability and terminal extension strength. It is an effective low-impact movement for building muscle definition and rehabilitating knee mechanics.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Anchor a resistance band to a sturdy post at roughly knee height.
- Step inside the loop and place the band directly behind the back of your target knee (the popliteal fossa).
- Face the anchor point and step back until the band is taut and your knee is pulled into a slight bend.
- Stand tall with your non-working leg slightly behind you for balance, keeping your working heel firmly on the floor.
How to do it
- Exhale as you contract your quadriceps to straighten your leg, driving the back of your knee against the resistance of the band.
- Hold the fully extended position for one second, focusing on a hard peak contraction in the thigh.
- Inhale as you slowly allow the band to pull your knee back into a slight bend with a controlled 2-second eccentric phase.
- Complete the desired number of repetitions on one leg before switching to the other.
Form checklist
- Keep your working heel glued to the floor at all times.
- Maintain an upright posture with your core engaged; do not lean into the movement.
- Ensure the movement comes solely from the knee joint, not by shifting your hips.
- Achieve a full lockout to ensure maximum recruitment of the quadriceps.
Pro tips
- To emphasize the VMO (inner quad), slightly rotate your foot outward (external rotation) during the extension.
- Focus on the 'mind-muscle connection' by visualizing your quad pulling your kneecap upward as you straighten the leg.
Make it harder
- Step further away from the anchor point to increase the band's tension at the point of peak contraction.
- Add a 3-5 second isometric hold at full extension to increase time under tension.
Frequently asked
- What muscles does the resistance band standing single leg knee extension work?
- The resistance band standing single leg knee extension primarily targets the quadriceps, and also works the glutes as secondary muscles.
- What equipment do you need for the resistance band standing single leg knee extension?
- The resistance band standing single leg knee extension uses resistance band.
- Is the resistance band standing single leg knee extension good for beginners?
- Yes. The resistance band standing single leg knee extension is a beginner-friendly movement and a strong foundation to build on.