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Tricep Extension Machine

A guided extension movement using a seated machine, isolating the triceps with a controlled, stable path.

Setup

Adjust the seat and arm pads appropriately. Position your upper arms supported, forearms able to move through the machine's range.

Movement

Push the handles or pads down or forward. Extend your arms fully, depending on the machine's specific design. Squeeze at full extension. Peak contraction point of the exercise.

Return

Control the return. Let the weight rise back to the starting position slowly.

Common Mistake to Avoid

Letting the upper arms move during the extension. Same isolation principle as other tricep exercises — keep the upper arms still.

Equipment Tricep extension machine
Primary Muscles Triceps
Secondary Muscles None significant

Why it matters

Similar to a pushdown but with a fixed, guided path, this machine isolates the triceps with reduced technique demands compared to free-weight or cable variations, making it accessible for building initial tricep strength and muscle awareness.

How to do it

  1. Adjust the seat and arm pads appropriately. Position your upper arms supported, forearms able to move through the machine's range.
  2. Push the handles or pads down or forward. Extend your arms fully, depending on the machine's specific design.
  3. Squeeze at full extension. Peak contraction point of the exercise.
  4. Control the return. Let the weight rise back to the starting position slowly.

Common mistakes

  • Letting the upper arms move during the extension. Same isolation principle as other tricep exercises — keep the upper arms still.
  • Using momentum to push through the machine's resistance. A controlled, deliberate extension is more effective.
  • Setting the seat or pads incorrectly. An improperly adjusted machine can reduce effectiveness or add unnecessary strain.
  • Letting the weight drop quickly on the return. The lowering phase still builds muscle — control it.

Sets & reps by level

Beginner

3 sets of 12–15 reps with light to moderate weight.

Intermediate

3–4 sets of 10–12 reps at a more challenging weight.

Advanced

4 sets of 10–15 reps, often used as a finishing isolation movement.

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