Dec 3, 2025 · These muscles, comprising the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius, are responsible for knee extension and play a crucial role in various lower …

Sep 13, 2024 · Understanding the specific muscles engaged during leg extensions is key to improving your form, targeting your quads more effectively, and preventing injury. In this guide, …

Aug 29, 2025 · But before you jump into the movement, it’s important to understand the leg extension muscles worked, the benefits, and how to do them safely without hurting your …

Jul 27, 2025 · All four muscles insert on the tibial tuberosity via the patellar tendon (yellow) and act to extend, or straighten, the knee. The three vasti muscles originate from the thigh, …

Sep 22, 2025 · These anterior muscles help stabilize your kneecap and support running, squatting, and even jumping higher. The leg extension machine is a classic in most …

The leg extension is an isolation exercise that specifically targets the quadriceps muscles. This guide covers proper technique, variations, and programming strategies for both aesthetic …

Jun 10, 2024 · Simply sit on the machine's padded seat and raise the padded bar with your legs. This particular exercise works mainly the quadriceps muscles of the front of the thigh — the …

Unlike exercises that involve movement across multiple joints, the leg extension focuses almost exclusively on the single action of extending the lower leg. Understanding which muscles are …

Mar 7, 2025 · The primary muscles recruited during leg extensions are the quadriceps, which consist of four distinct muscles working together to extend the knee. The rectus femoris is the …

May 29, 2014 · Extend your legs until they are straight. Pause at the top of the movement, then slowly lower back to the starting position. Repeat for the desired number of reps. To build …