Legs · Smith Machine

Smith Sumo Chair Squat

How to do the smith sumo chair squat, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.

Animated demonstration of the Smith Sumo Chair Squat
Equipment
Smith Machine
Difficulty
Beginner
Logged as
Weighted reps
Movement
Squat
Mechanic
Compound

How to do it

Set the Smith machine bar across your upper back and stand with a wide stance and toes turned out, a bench or box behind you. Push your hips back and bend your knees to lower until you lightly touch the seat, then drive through your heels to stand. Keep the bar path vertical along the rails throughout.

  1. 1Your glutes and inner thighs loading as you sit back and wide
  2. 2Heels driving into the floor to stand up
  3. 3Knees tracking out over your toes the whole way

Common mistakes

  • Crashing down onto the seat instead of touching it lightly
  • Letting your knees cave inward as you stand
  • Rounding your lower back at the bottom

Muscles worked

The smith sumo chair squat mainly works the quads, glutes, and adductors, with the hamstrings, lower back, lower abs, and calves assisting.

  • QuadsPrimary
  • GlutesPrimary
  • AdductorsPrimary
  • HamstringsSupport
  • Lower BackSupport
  • Lower AbsSupport
  • CalvesSupport
  • Upper TrapsMinor
  • Mid TrapsMinor
  • Upper AbsMinor
  • ObliquesMinor

Kovo programs the smith sumo chair squat for you and tracks it every session.

We build your whole program, drop the right lifts into each workout, and adjust your weights as you get stronger. Free on iOS and Android.

More quads exercises

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Last reviewed June 2026.