Core · Bodyweight

Sitting Stepout Knee Tuck on a Padded Stool

How to do the sitting stepout knee tuck on a padded stool, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.

Animated demonstration of the Sitting Stepout Knee Tuck on a Padded Stool
Equipment
Bodyweight
Difficulty
Beginner
Logged as
Reps
Movement
Flexion
Mechanic
Compound

How to do it

Sit on the edge of a padded stool with your core braced. Step one foot out to the side, then bring that knee back in and tuck it up toward your chest, crunching slightly as you pull it in. Lower the foot back out and alternate legs each rep.

  1. 1Your lower abs contracting as the knee tucks in
  2. 2The hip flexor driving the knee toward your chest
  3. 3A stable torso as the leg steps out and back

Common mistakes

  • Rounding hard through the lower back on the tuck
  • Using momentum to swing the knee up
  • Leaning so far back you lose balance on the stool

Muscles worked

The sitting stepout knee tuck on a padded stool mainly works the lower abs and hip flexors, with the obliques, upper abs, and quads assisting.

  • Lower AbsPrimary
  • Hip FlexorsPrimary
  • ObliquesSupport
  • Upper AbsSupport
  • QuadsSupport
  • Lower BackMinor
  • GlutesMinor
  • AdductorsMinor
  • Tibialis AnteriorMinor

Kovo programs the sitting stepout knee tuck on a padded stool 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.

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Last reviewed June 2026.