Alternating Machine Leg Press
Also known as: alternating leg press
- Secondary muscles
- Hamstrings, Glutes
- Body part
- Upper Legs
- Position
- Seated
- Laterality
- Alternating sides
- Category
- Strength
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Pressing one foot at a time while the other stays planted lets you alternate legs without changing the machine's load, building rest for each leg into the set itself. It exposes side-to-side strength differences more gently than the single leg horizontal leg press, since the resting foot still helps control the carriage between reps.
How to do the Alternating Machine Leg Press
- Adjust the seat and foot platform of the leverage machine to your desired position.
- Sit on the machine with your back against the backrest and your feet on the foot platform.
- Place your hands on the handles or sides of the machine for stability.
- Push one foot against the foot platform, extending your leg until it is almost fully straight.
- Pause for a moment, then slowly bend your leg and return to the starting position.
- Repeat with the other leg.
- Continue alternating legs for the desired number of repetitions.
Tip: Push through the whole foot and keep your knees tracking in line with your toes rather than caving inward.
Muscles worked
Primary
Quads · Legs
The quads extend the knee and do most of the work, and they should feel it hardest in the bottom half of each rep.
Secondary
- Hamstrings
- Glutes — The glutes get more involved the higher and wider your feet are on the platform and the deeper you go.
Common mistakes
- Lower back peeling off — if your hips lift at the bottom, the range is too deep for your hip mobility; stop just before the pelvis tucks.
- Slamming into lockout — slamming to full extension under a heavy sled loads the joint, not the muscle; stop just short of lockout and keep tension.
- Feet too low — a low foot position pushes the knees far forward and shifts everything onto the quads and knees; move the feet up to bring in the glutes.
- Half reps, too much weight — the leg press invites ego loading, so pick a weight you can take to at least 90 degrees of knee bend with control.
Where it fits in a workout
Use the leg press after squats as a way to get more quad volume without the bracing demand, or as the main lower body lift on a lighter day. Follow each set with calf raises on the same sled to save time.
How many sets, how heavy and how hard: see what the ACSM position stands support.
Variations and alternatives
When to talk to someone
- Chest discomfort, feeling faint or lightheaded, or trouble breathing during or after exercise can be signs of a heart attack. In the US, call 911 right away; elsewhere, call your local emergency number.
- Heart, metabolic or kidney disease, or symptoms like these when you are active: talk to your doctor before you start or step up training.
- Pregnant: ask your obstetric care provider which exercise suits you.
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Sources
- ACSM position stand on exercise quantity and quality (Garber et al., 2011)
- ACSM preparticipation health screening (Riebe et al., 2015)
- ACOG Committee Opinion No. 804 on exercise in pregnancy (2020)
- CDC: About Heart Attack Symptoms, Risk, and Recovery (2024)
Sources checked on October 17, 2026. Full citations are in the exercise library.
Animation and exercise data: ExerciseDB, licensed to SetGrip. General information, not medical or coaching advice.