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ArmsCableIsolation — elbow extension

Cross-Body Cable Triceps Extension

Reviewed by Bryan Cortez, MS

Cross the cable, lock the upper arm, and let one elbow extend it.

Rep Sweet Spot
10-20
per side
Sets
2-4
sets per side
RIR
1-3

Demonstration

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How to do it

Setup

  • Set the cable around shoulder to upper-chest height
  • Take the opposite-side cable with one hand
  • Step out until the cable crosses the torso under tension
  • Brace the upper arm against the torso or steady it with the free hand

Execution

  • Extend the elbow down and away across the body
  • Keep the shoulder and torso still
  • Finish with the elbow straight but not jammed
  • Return until the triceps are lengthened without losing upper-arm position

Common Errors

  • Rotating toward the stack
  • Letting the elbow travel with the handle
  • Flexing the wrist to finish
  • Shortening the return as fatigue rises

Cues That Work

  • Pin the upper arm; move only the forearm; finish across and away

No-Fly Zone

Avoid rotating the torso, driving the shoulder forward, or adding load that turns the wrist and handle into the limiting factor.

Programming

Sequence priority

Late

The stable moderate-load isolation fits after pressing, when each side can be trained close to local failure without adding substantial systemic fatigue.

Progression

Model — Double

Fallback model — Double

Use the same pulley height, stance, upper-arm position, and return depth; reach the top of the range on both sides before increasing load.

Best program fit

Push

Load increments

Standardthe smallest cable-stack increment
Smaller incrementadd reps or use a fractional stack plate
Larger incrementone selector step only after upper-arm and torso position remain unchanged

If it hurts

Pain is information, not a challenge to push through. Stop the set if pain is sharp, worsening, or changes how you move. These are exercise-selection options, not medical diagnosis or rehabilitation advice.

Work down this list in order. Stop at the first change that removes the pain.

  1. Step 1

    Setup tweaks

    Reduce the step-out distance and load until the torso and upper arm can remain still.

  2. Step 2

    ROM / tempo / bias

    Use a cuff around the wrist or forearm if gripping the handle limits the triceps set.

  3. Step 3

    Implement swap

    Single-arm cable pushdown, bilateral pushdown, or lying cable triceps extension.

Substitutions

Approved fallback

Single-arm cable pushdown, bilateral pushdown, or lying cable triceps extension.

The Evidence

The unilateral cross-body resistance path is distinct, but triceps-head contribution cannot be inferred precisely from the label. Cable geometry and shoulder comfort determine the useful setup.

SFR — 4.5

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