How to do the Machine Single-leg Leg Extension
Seat yourself in the machine and adjust it so that you are positioned properly. The pad should be against the lower part of the shin but not in contact with the ankle. Adjust the seat so that the pivot point is in line with your knee. Select a weight appropriate for your abilities.
Maintaining good posture, fully extend one leg, pausing at the top of the motion.
Return to the starting position without letting the weight stop, keeping tension on the muscle.
Repeat for the desired number of repetitions.
Sets and reps
| Goal | Sets | Reps | Rest |
|---|---|---|---|
| Muscle growth | 2–4 | 10–15 | 1 min |
| Muscular endurance | 2–3 | 15–25 | 45 s |
When you hit the top of the rep range on every set, add 5 kg (10 lb) next session and work back up.
Starting points from training research. Stop each set 1–3 reps short of failure.
Muscles worked
Primary
The front of your thighs straightens the knee. Squats, leg presses and lunges with deep knee bend build them; leg extensions isolate them.
Alternatives
Same muscles, similar movement: swap in one of these if the Machine Single-leg Leg Extension doesn’t suit your gym or your joints.
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