Cable Concentration Extension (on knee)

Sculpt and strengthen your triceps with the Cable Concentration Extension, a focused, kneeling exercise using a cable machine.

Intermediate
Isolation
Push
2 min per set1 min rest

Description

A cable extension exercise performed while kneeling, targeting the tricep muscles.

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How to Do Cable Concentration Extension (on knee)

  1. 1
    Setup

    Kneel facing a low cable pulley machine, placing one knee on the ground directly in front of the cable. Set the cable pulley to its lowest position and attach a single-grip handle.

  2. 2
    Setup

    Grasp the handle with an underhand grip (supinated) using the hand corresponding to the knee that is down. Lean forward slightly, resting the back of your working upper arm (triceps) against the inside of your thigh or a pad for stability.

  3. 3

    Keeping your upper arm stationary and pressed against your thigh, exhale and extend your forearm downwards and away from your body until your elbow is fully locked, squeezing your triceps at the bottom.

  4. 4

    Inhale slowly as you control the weight, allowing your forearm to return to the starting position without letting the weight stack touch down, maintaining tension on the triceps.

Tips

  • Maintain a strict upper arm position by firmly pressing it against your inner thigh throughout the entire movement to maximize triceps isolation.
  • Focus intently on squeezing your triceps at the very bottom of the extension to ensure a strong mind-muscle connection and full contraction.
  • Control the eccentric (lowering) phase of the movement by slowly returning the handle to the starting position, resisting the weight to enhance muscle growth.
  • Experiment with slightly different angles of your upper arm against your thigh to find the position where you feel the strongest triceps activation.

Common Mistakes

  • ×Swinging the upper arm to generate momentum reduces triceps isolation; instead, firmly anchor your upper arm against your thigh and only move your forearm.
  • ×Failing to achieve full elbow extension at the bottom of the movement limits triceps contraction; ensure you fully lock out your elbow for maximal muscle activation.
  • ×Allowing the weight stack to touch down at the top of the movement releases tension on the triceps; control the weight's ascent and stop just before the plates make contact.

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Frequently Asked Questions

What muscles does Cable Concentration Extension (on knee) work?
Cable Concentration Extension (on knee) primarily targets Triceps Brachii.
Is Cable Concentration Extension (on knee) good for beginners?
Cable Concentration Extension (on knee) is rated intermediate. Beginners can still attempt it with lighter weight and careful form, but it's best to master easier variations first.
What equipment do I need for Cable Concentration Extension (on knee)?
You need Cable to perform Cable Concentration Extension (on knee). If you don't have this equipment, look for variations that target the same muscles with what you have available.
What are the best tips for Cable Concentration Extension (on knee)?
Maintain a strict upper arm position by firmly pressing it against your inner thigh throughout the entire movement to maximize triceps isolation. Focus intently on squeezing your triceps at the very bottom of the extension to ensure a strong mind-muscle connection and full contraction. Control the eccentric (lowering) phase of the movement by slowly returning the handle to the starting position, resisting the weight to enhance muscle growth. Experiment with slightly different angles of your upper arm against your thigh to find the position where you feel the strongest triceps activation.
What are common mistakes when doing Cable Concentration Extension (on knee)?
Swinging the upper arm to generate momentum reduces triceps isolation; instead, firmly anchor your upper arm against your thigh and only move your forearm. Failing to achieve full elbow extension at the bottom of the movement limits triceps contraction; ensure you fully lock out your elbow for maximal muscle activation. Allowing the weight stack to touch down at the top of the movement releases tension on the triceps; control the weight's ascent and stop just before the plates make contact.

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Cable Concentration Extension (on knee)

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