Lever Leg Extension

The leg extension is a seated machine exercise that straightens the knee against a padded lever. It isolates the quadriceps, including the rectus femoris that squats train less, and it is the only common exercise that works the quads fully in their shortened position.

Targets: Quadriceps
Equipment: Leverage machine
Level: Intermediate
Start with: 3 × 10-12, 60s rest

How to do it

Adjust the seat so your knees line up with the machine's pivot, and the pad sits on your lower shins.
Hold the handles and sit back firmly against the seat.
Straighten your legs until your knees are fully extended.
Hold for a moment, then lower slowly until your knees are bent past 90 degrees.

Form cues

Squeeze the quads hard at the top.
Hips stay down on the seat.
Lower for two or three seconds.

Common mistakes

Kicking the weight up, which swaps quad work for momentum and jolts the knee. Lift for a second, lower for two or three.
A seat set wrong, so the knee does not line up with the pivot. It is the setup detail that makes the exercise comfortable.
Partial reps at the top only. Use the full range unless a knee injury says otherwise.

Where this fits in a week

Dietly Fit scores one photo a week out of 100, names the area holding the score back, and builds the week around it — so a movement like this gets programmed when your quadriceps is what needs the work, not because it was next on a list.

More quadriceps movements

Demonstration courtesy of Gym Visual. Sets and reps are a starting point, not a prescription. Speak to a qualified professional before starting a new exercise program, particularly if you are managing an injury or a health condition.