About this exercise
Seated leg extensions are an effective isolation exercise that targets the quadriceps, helping to strengthen and define the muscles at the front of your thighs.
Seated leg extension
Step by step instructions, muscle activation and variants for the Seated leg extension.
EasyQuadriceps
How to Perform
- Sit on the leg extension machine with your back against the pad and your legs under the padded lever.
- Adjust the machine so that your knees align with the machine's pivot point and your legs are at a 90-degree angle.
- Grip the handles or the sides of the seat for stability.
- Extend your legs by straightening your knees, lifting the padded lever until your legs are fully extended.
- Hold the position for a moment, squeezing your quadriceps.
- Slowly lower the lever back to the starting position, bending your knees to a 90-degree angle.
- Repeat the movement, maintaining control and proper form throughout.
Muscle Activation
Primary
Quadriceps
Common Mistakes
Common mistakes content is coming soon.
About the Seated leg extension
The Seated leg extension is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.