Leg Extension
Seated knee extension: the machine movement that fully isolates the quads.
- Sets
- 3
- Reps
- 12-15
- Rest
- 60 s
- Difficulty
- Beginner
Machine
Demonstration
Targeted Muscles
How to Perform
- 01Adjust the seat so your knee joint lines up with the machine’s pivot axis.
- 02Raise your legs against the pad until they are fully extended.
- 03Squeeze your quads at the top, then lower with resistance.
Form Tips
- Do not kick the weight up fast; this protects your knee joint.
- Keep your hips on the seat; use the handles for support.