How to do the Smith Single Leg Split Squat
LegsQuadsSmith MachineBeginner
The Smith Machine single leg split squat removes the balance variable and lets you focus entirely on loading the quads with precision and control. Mastering this movement builds the unilateral leg strength that transfers directly to every athletic and everyday demand you face.
Add this to my personalized plan →Muscles worked
Primary
Quadriceps
Secondary
GlutesHamstringsCalves
Step-by-step
- Set the bar at shoulder height, step one foot back onto a bench or flat surface and position your front foot roughly two feet ahead of the bar
- Unrack the bar and stand tall, keeping your torso upright and your front foot flat on the floor
- Lower your back knee toward the ground in a controlled descent until your front thigh is parallel to the floor
- Drive through your front heel to press back to the start, fully extending the front leg before beginning the next rep
Common mistakes
- Letting the front knee cave inward under load, which stresses the joint and kills power output, so actively push the knee out over your second toe throughout the movement
- Placing the front foot too close to the bar, which forces the torso to lean forward and shifts stress off the quads, so adjust your stance so the shin stays near vertical at the bottom
- Dropping too fast and losing tension at the bottom, which reduces quad stimulus and strains the knee, so aim for a two to three second lowering phase on every rep
Pro tip — At the bottom of each rep, pause for one full second and consciously squeeze your front quad before driving up, this eliminates momentum and forces the muscle to own every inch of the range of motion.
Sets & reps by goal
Build muscle3–4 sets × 6–10 reps
Get stronger4–5 sets × 3–6 reps
Lose fat / tone3 sets × 10–12 reps
Rest: 2–3 min between sets (60–90s on lighter days).
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