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Seated Knee Thrust on a Chair

Step by step instructions, muscle activation and variants for the Seated Knee Thrust on a Chair.

EasyAbsCore

About this exercise

A seated core exercise performed on a chair where you drive one knee upward in a powerful thrusting motion. The explosive yet controlled movement activates the abs and hip flexors, making it a useful option for those performing chair-based workouts.

How to Perform

  • Sit upright near the edge of a sturdy chair with feet flat on the floor
  • Place your hands lightly on the sides of the seat for stability
  • Brace your core and maintain a tall posture throughout
  • Drive your right knee upward toward your chest in a controlled thrust
  • Hold the top position briefly, squeezing the core
  • Lower your foot back to the floor with control
  • Repeat for the desired number of reps on the right side
  • Switch legs and perform the same movement on the left side

Muscle Activation

Primary
AbsCore
Secondary
Quadriceps

About the Seated Knee Thrust on a Chair

The Seated Knee Thrust on a Chair is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.