Leg Extension

Which muscles does it train?

Equipment needed

How to perform it

Isolation work is usually trained in a higher rep range: 2 to 4 sets of 10 to 15 reps with 45 to 90 seconds of rest, performed under control.

Execution and technique cues

• Sit back in the machine, press your hips flat against the backrest, and pull yourself down using the handles.
• Align your knees with the pivot point of the machine and place the pad just above your ankles.
• Extend your legs fully, squeezing your quadriceps at the top of the movement.
• Lower the pad under control back to the starting position without letting the weights slam.

Common mistakes

• Allowing the hips or buttocks to rise off the seat during the extension.
• Using swinging momentum to kick the pad up rather than a controlled muscular contraction.
• Placing the leg pad too high on the shins or too low on the toes.

Frequently asked questions

Should I point my toes in or out?

Keep your toes pointed straight up for balanced quad development. Tilting them excessively can place uneven stress on the knees.

Is the leg extension bad for the knees?

No, when performed with controlled weight and proper alignment, it is a safe exercise that isolates the quadriceps.

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