The katana extension is an overhead triceps extension done on a dual cable station with the cables crossed behind you. You stand with your back to the two stacks, each hand holding the opposite stack’s cable behind your head, and straighten both arms up and outward at once. The arms travel up and out along each cable rather than straight overhead, like drawing two swords from scabbards on your back, which is where the name comes from.
Nobody is credited with inventing or naming it. Vitónica, the Spanish fitness site, explains the name by the swordsman’s draw and credits no one. Brolic lists it as Katana Extension (Cable), with “Cable Katana Extension” as an alias, and logs it as an ordinary two-arm exercise in reps.
Muscles worked
Brolic tags the triceps as the primary muscle and nothing as secondary. Both coaches agree: Live Lean TV lists the triceps alone and says the overhead position gives both a stretch and a contraction, and Action Fitness teaches it for the lengthened position of the triceps.
No study measures the katana extension: a PubMed search on October 7, 2026 for “katana” with “triceps” returned nothing. The overhead position itself has one trial behind it. Maeo and colleagues (2023) had 21 adults train cable elbow extensions for 12 weeks, one arm overhead and the other at the side: the whole triceps grew about 1.4 times more on the overhead arm and the long head, which also crosses the shoulder, about 1.5 times more, despite lighter loads. That was a standard single-arm extension, not crossed cables: it supports overhead work, not the katana set-up over any other overhead extension.
Set the cables
Set both pulleys between waist and shoulder height. Live Lean sets them at about waist height; Action Fitness sets them just below shoulder height, with the rule that the cable should run in a straight line through the elbow and along the triceps once you are in position.
Cross the cables and turn your back to the stacks. Action Fitness takes the two cables without handles, crosses them, ducks under and brings them back behind the head. Live Lean faces the machine, takes each cable’s stopper ball in the same-side hand, then spins 180° while raising the cables overhead, which leaves them crossed behind you.
Stagger the feet and stand tall. Live Lean takes a staggered stance, keeps the chest up and braces the middle so the back does not arch.
Elbows up and out, not pinned to the ears. Live Lean’s start has the arms bent overhead, about 40° forward and flared out a little. Action Fitness holds the elbows out at around 45 to 60°, in the plane of the shoulder blade.
Draw the swords
Extend up and out along the cable. Live Lean’s cue is to extend both arms up and away as if unsheathing a pair of katanas from a harness on your back. Action Fitness says to push up toward the roof and out along the angle of the cable; if a cable crosses the upper arm instead of running along it, move until it does, because that alignment gives the stretch.
Squeeze, then lower slowly behind the head. Live Lean pauses briefly at full extension, then bends the elbows slowly to bring the hands back side by side behind the head until the triceps stretch. Action Fitness controls the lowering along the same path.
Versus the overhead rope extension
| Overhead rope extension | Katana extension | |
|---|---|---|
| Cables | One, with a rope or handle | Two, crossed, usually no handles |
| Hands | Together, in front of the head | One each side, behind the head |
| Arm path | Up and forward, elbows high | Up and outward, along each cable |
Catalyst Athletics’ cable overhead extension holds a narrow handle overhead facing away from the machine, elbows as high as possible, bending fully and extending completely, for 6 to 15 reps. Live Lean’s reason for the katana version is that each arm works its own cable, so a stronger side cannot help a weaker one. No trial compares the two.
Logging
Brolic logs Katana Extension (Cable) in reps, both arms together. Enter the weight set on one stack (both stacks carry the same), and note the pulley height and whether you held the stopper balls or clipped on handles, since both change the stretch. The free workout log has room for that, and the weekly set tally shows how these sets add to your triceps work beside pushdowns and presses.
Common questions
Handles or bare cables? Action Fitness uses no handles; Live Lean holds the stopper balls. Both work; record which.
What pulley height? Waist height in Live Lean’s version, just below the shoulder in Action Fitness’. Use the line test and write the height down.
One arm at a time? Vitónica treats a single-arm version as standard. Brolic’s entry is two-arm; a one-arm set needs a note so the histories do not mix.
My elbows or shoulders hurt. Lighten the stack, bring the elbows closer to Live Lean’s angle and check the cable line. If it still hurts, stop; pain is not a cue.
Sources and method
- Action Fitness and Nutrition: Tricep Katana Extension — crossed set-up, elbow angle, sword cue and cable line; automatic captions, pulley height from the description.
- Live Lean TV: How To: Katana Cable Triceps Extension — pulley height, stopper balls, the turn, the 40° start, stance and slow return; captions and description.
- Vitónica: the katana triceps extension — the name’s explanation, the long-head stretch and the single-arm version.
- Catalyst Athletics: cable overhead tricep extension — the comparison column and its rep range.
- Maeo et al. (2023) — overhead versus neutral cable elbow extensions over 12 weeks.
- Brolic catalog — name, alias, logging mode and muscle tag.
Pulley heights, elbow angles and rep ranges are coaching starting points from the sources cited, not optima from a trial.
