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  7. Sitting Jump Rope Knee Tuck On Chair

Exercise guide

Sitting Jump Rope Knee Tuck On Chair

  • Beginner
  • Compound
  • Timed hold
  • Lower legs
  • Upper legs
  • Waist

This dynamic core exercise combines seated knee tucks with the rhythmic arm movement of jumping rope to engage the abs, obliques, and shoulders simultaneously. It builds core stability and coordination while providing a low-impact cardiovascular challenge.

Reviewed by the Crucible team · Updated June 2026

Watch the Sitting Jump Rope Knee Tuck On Chair demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Abs
  • Deltoids
  • Obliques

Secondary

  • Glutes
  • Hip flexors
  • Quadriceps

Equipment

  • Rope

Setup

  1. Sit on the front edge of a sturdy, armless chair with your feet flat on the floor.
  2. Hold the jump rope handles with a neutral grip, keeping your hands at hip level.
  3. Lean your torso back slightly (about 20-30 degrees) while keeping your spine straight and core braced.

How to do it

  1. Begin rotating the jump rope using small, circular wrist movements as if skipping.
  2. As the rope passes under your thighs, lift both knees toward your chest in a controlled tucking motion.
  3. Exhale forcefully as you tuck your knees and inhale as you lightly tap your toes back to the floor.
  4. Maintain a steady 1:1 rhythm between the rope rotations and the knee tucks.

Form checklist

  • Keep your chest lifted and avoid rounding your shoulders or lower back.
  • Maintain a slight backward lean to keep the abdominals under constant tension.
  • Keep your elbows tucked close to your ribs to isolate the wrist and shoulder movement.
  • Ensure your feet only lightly touch the floor to maintain core engagement.

Pro tips

  • Focus on pulling your navel toward your spine to create a 'hollow body' effect for deeper abdominal recruitment.
  • Visualize clearing the rope with your feet to improve timing and coordination between the upper and lower body.

Make it harder

  • Perform 'double-unders' by rotating the rope twice for every single knee tuck.
  • Extend your legs straighter during the eccentric phase to increase the lever length and core demand.

Frequently asked

What muscles does the sitting jump rope knee tuck on chair work?
The sitting jump rope knee tuck on chair primarily targets the abs, deltoids, and obliques, and also works the glutes, hip flexors, and quadriceps as secondary muscles.
What equipment do you need for the sitting jump rope knee tuck on chair?
The sitting jump rope knee tuck on chair uses rope.
Is the sitting jump rope knee tuck on chair good for beginners?
Yes. The sitting jump rope knee tuck on chair is a beginner-friendly movement and a strong foundation to build on.

Related exercises

  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals
  • Alternate Single Leg Raise PlankIntermediate · abs, deltoids, hamstrings, and obliques
  • Bear Crawl Low HipIntermediate · abs, deltoids, and obliques
  • Bear Plank Floating Leg ExtensionIntermediate · abs, deltoids, hamstrings, and obliques

Train this with a plan, not guesswork

Crucible builds the sitting jump rope knee tuck on chair into a precise program around your body, equipment, location, and time.

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