# Resistance Band Standing Single Leg Knee Extensio - Canonical: https://fitwill.app/exercise/10536/resistance-band-standing-single-leg-knee-extensio/ - Media ID: 10536 - Primary muscle: Quads - Body part: Legs - Equipment: Resistance Band - Video: https://fitwill.app/videos/10536/resistance-band-standing-single-leg-knee-extensio.mp4 ## Description The Resistance Band Standing Single Leg Knee Extension is an isolation exercise for the quadriceps performed one leg at a time from a standing position. A resistance band is anchored to a low, sturdy point such as a chair leg and looped around the back of the working knee. You hinge forward and hold onto the chair for support, then straighten the working knee against the band's pull. Because the band drags the shin toward flexion, your quads have to work through the entire range to finish the extension. This movement suits people who want direct quad work without a leg extension machine, including home trainees, anyone rehabbing or reconditioning a knee under professional guidance, and lifters who want a light, high-control finisher after squats or lunges. Training one leg at a time also exposes side-to-side differences in quad strength and knee control that bilateral exercises can hide. The primary muscle worked is the quadriceps on the front of the thigh, which extends the knee. The standing position adds a balance and stabilization demand: the support leg, hips, and core stay active to keep your torso still while the working knee moves. That stabilization component is why the setup matters so much — a stable hinge and a firm grip let the working leg do its job without your body wobbling around the joint. To execute it well, keep the band seated in the crease behind the knee rather than on the calf, and let the bend come from the knee only. Extend by squeezing the quad until the leg is straight, pause briefly, then lower the shin back with control instead of letting the band snap your heel forward. The forward hinge with hands on a chair back shifts your weight onto the support leg, so most people find the balance easier than a fully upright single-leg stance. A few practical points keep this exercise safe and effective. Choose a band tension you can extend smoothly for your target reps without jerking the leg, and never slam into a hard lockout at the top. Keep the working hip square to the anchor — if your pelvis rotates to help the leg, the tension drops off the quads. Work each side with the same range and tempo so both legs progress evenly. ## Instructions 1. Anchor one end of a resistance band to a low, sturdy object such as a heavy chair leg, positioned behind you once you face the support. 2. Loop the other end of the band around the back of your working knee so it sits in the crease just behind the joint. 3. Stand facing the chair, hinge forward from the hips, and place both hands on the chair back with your arms straight. 4. Shift your weight onto the support leg and let the band pull the working knee into a comfortable bend, foot relaxed below the knee. 5. Brace your core and keep your hips square to the chair so your lower back stays neutral. 6. Exhale and extend the working knee by squeezing the quad, pushing the shin back until the leg is nearly straight. 7. Pause for a moment at full extension with tension still on the band. 8. Inhale and slowly bend the knee, letting the band draw the shin back to the starting bend without losing control. 9. Complete all reps on one leg, then reset the band behind the other knee and repeat. 10. Adjust your distance from the anchor between sets to increase or decrease band tension. ## Tips & Tricks - Keep the band in the crease behind the knee — if it slides down onto the calf, it changes the pull and can irritate the shin. - Do not snap the knee into a hard lockout at the top; finish the rep by contracting the quad, not by flicking the leg straight. - If your hips rotate as the knee extends, imagine both hip bones pointing at the chair and slow the tempo down. - Start with a lighter band than you think you need; the standing balance demand makes moderate tension feel harder than on a machine. - Keep your grip firm and shoulders stable on the chair back — if your torso sways, the working leg loses its stable base. - If you feel the band's pull mostly at the very bottom of the bend, step slightly closer to the anchor so tension is present through the whole range. - Avoid arching your lower back as you push the leg back; the movement should come from the knee, not the spine. - Match reps and range on both legs exactly — use the weaker side to set the standard for the stronger one. - Move the anchor to a higher rung or attachment point if the band slips off the back of your knee during the rep. ## Frequently Asked Questions ### Which muscles does the Resistance Band Standing Single Leg Knee Extension work? The quadriceps on the front of the thigh are the primary movers, since they extend the knee against the band. The support leg, glutes, and core work to keep you balanced while the working knee moves. ### Why is the band placed behind the knee instead of around the ankle? Looping the band in the crease behind the knee lets it pull the shin directly into flexion, which mimics how a knee extension machine pads against the shin. It also keeps the resistance close to the joint so the quad, not the hip, drives the movement. ### Is the Resistance Band Standing Single Leg Knee Extension suitable for beginners? Yes, as long as you start with a light band and hold on firmly for balance. The forward hinge and chair support make it easier to control than an unsupported single-leg version. ### Why do I hinge forward and hold the chair instead of standing upright? Hinging forward shifts your weight onto the support leg and gives your hands a stable anchor, which frees the working knee to move without a balance struggle. It also makes it easy to feel the quad working through the full range. ### What is the most common mistake with this exercise? Letting the band snap the knee back into the bend on the return, which turns the exercise into a band-controlled swing. Always lower the shin deliberately and keep tension in the quads through the descent. ### How many reps should I do? For general strength and quad endurance, 2 to 4 sets of 10 to 15 controlled reps per leg works well. Increase band tension rather than adding fast, sloppy reps when it gets easy. ### Can I substitute the Resistance Band Standing Single Leg Knee Extension with another exercise? A band seated knee extension with the band around the ankle is the closest alternative and removes the balance demand. A leg extension machine is another option if you have gym access. ### Is this exercise safe if I have a knee issue? It is often used in knee reconditioning because the load is light and adjustable, but you should get clearance from a doctor or physical therapist first. Start with very light tension and a pain-free range, and stop if the joint complains. ### How do I make the Resistance Band Standing Single Leg Knee Extension harder? Use a thicker band, step farther from the anchor, or add a 2 to 3 second pause at full extension. You can also slow the return to a 3 to 4 second lower for more time under tension.