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The Seated Leg Extension is a lower body exercise that primarily targets the quadriceps. This is an isolation exercise which is well suited to beginner lifters.



  • Set up a leg extension machine so that your feet are starting as close to your body as possible.
  • Squeeze your quadriceps to move the machine until your legs are fully extended.
  • Slowly return the machine to the starting position without releasing the tension on your quadriceps and repeat.
  • Focus on moving the machine smoothly and slowly to really focus on the quads.

Leg Muscle Diagram.

Leg Muscles