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Captain's Chair Knee Raise

Supported lower core exercise ideal for lifters developing grip or abdominal strength.

Recommended Sets3 Sets
Rep Range12–15 Reps
Rest Period45s Rest
Equipmentbodyweight

3D Visual Form & Technique Demonstration

Biomechanically verified form execution and joint angle cues.

Official Video Tutorial · 3D Biomechanics & Form DemonstrationWatch on YouTube
How to Execute the Captain's Chair Knee Raise

Mount captain chair station resting forearms on pads with back against cushion. Raise knees up towards chest while flexing pelvis upward.

  • Primary Muscle: ABS
  • Secondary Synergists: Pure Isolation
  • Rest Interval: 45 seconds between sets

Captain's Chair Knee Raise Anatomy Activation

Primary motor unit recruitment for abs with secondary synergist stabilizers.

Primary (abs)
Anterior (Front View)
Anterior Muscle Recruitment: absFront anatomical silhouette highlighting abs in orange as active agonist.
● Primary Target View
Posterior (Back View)
Posterior Muscle Recruitment: absBack anatomical silhouette highlighting abs in orange as active agonist.
Secondary / Stabilizer View
Anatomical PlaneSagittal & Transverse Planes
Primary KinesiologySpinal Flexion & Anti-Rotation
Biomechanical VectorCompressive intra-abdominal stabilization
Active Anatomy:Primary: abs
Figure: Biomechanical muscle recruitment model for abs. Highlighted in orange is the primary agonist motor unit; highlighted in blue are synergistic stabilizing groups (isolation mechanics).

Step-by-Step Execution Guide

1

Mount captain chair station resting forearms on pads with back against cushion.

2

Raise knees up towards chest while flexing pelvis upward.

3

Pause for 1 second at top, lower slowly.

Common Mistakes & Form Fixes

Swinging legs with momentum.

Shrugging shoulders into ears.

Biomechanical Safety & Injury Warning

Focus on curling pelvis, not just lifting legs.

Alternative Exercises & Swaps

If the equipment is occupied or you need a joint-friendly variation, substitute with these approved movements:

Hanging Leg Raiseabs
View Form
Kneeling Cable Crunchabs
View Form
Rohan Varma, CSCS
Authored By
Rohan Varma, CSCSHead Strength Coach & Biomechanics Lead
Rohan Varma, CSCS
Medically Reviewed By
Rohan Varma, CSCSHead Strength Coach & Biomechanics Lead
Last Reviewed & Verified: 2026-03-29
Read our Medical Fact-Checking Standards
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