Machine Triceps Extension
A beginner isolation movement that trains the triceps with a machine.
Force Type
Push
direction of effort
Difficulty
Beginner
training level
Variations
0
equipment swaps
Muscles
1
primary + secondary
The verdict
Machine Triceps Extension has 4-step instructions, documented to a similar depth as most of the 71 triceps exercises PlainExercise catalogues.
Ranked against the 71 triceps exercises PlainExercise currently catalogues, not the full exercise-science literature.
Catalog lens
Two ways this record sits in the source corpus
These are placement measures for the documented record, not a score for exercise quality, safety, or suitability.
Instruction steps
#496 of 868
Typical documentation depth
Numbered source steps, ranked across every documented exercise.
Instruction text
#568 of 868
Typical documentation depth
A separate character-length placement prevents step count from standing in for explanatory detail.
Machine Triceps Extension vs every catalogued exercise by instruction-text length
Where this record's instruction-character count sits among all 873 Free Exercise DB exercises with instructions, not a rating of the movement itself.
500 568th of 873 higher than 305 of 873 exercises
All exercises, banded by instruction-text character count
Each bar is a band; taller bars hold more exercises. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source Free Exercise DB · 2026-07-10
Machine Triceps Extension is documented from the Free Exercise DB (CC0) extract, last ingested July 2026. Classification, muscle roles and instruction text are source facts; the placement and cohort measures on this page are computed by PlainExercise and are not a rating of the movement.
What the Machine Triceps Extension Data Reveals · DOC · PUSH/ISOLATION
Machine Triceps Extension stands out on mechanic class: joint involvement separates this page from isolation peers.
A mid-length step list is enough detail to compare form without the longest upstream essays.
Across 71 catalogued triceps movements, the average instruction record is 744 characters and 4.7 steps; 58 of those (81.7%) clear the same ≥500-character rich bar used here. This page ranks #58 of 71 by instruction-character length (67.2% of the cohort average).
Among the 67 exercises that also use a machine, average instruction length is 786 characters; 59 of those peers are longer than this record. Equipment-matched peers are the honest comparison when you are choosing a substitute implement for the same pattern.
Other well-documented triceps movements (same ≥500-character bar):
- Tate Press (5 steps, 1,214 chars)
- Lying Close-Grip Barbell Triceps Extension Behind The Head (5 steps, 1,163 chars)
- Pin Presses (6 steps, 1,139 chars)
- Weighted Bench Dip (5 steps, 1,139 chars)
- Dumbbell One-Arm Triceps Extension (6 steps, 1,118 chars)
Context matters: taxonomy (level, mechanic, force, musculature, equipment) does not account for individual biomechanics, joint history, or recovery. Common-mistake framing below is derived from classification fields, not case-specific coaching. Not medical or personal-training advice. Consult a physician or certified trainer before starting, especially with injuries, cardiovascular conditions, recent surgery, or pregnancy.
Machine Triceps Extension catalog footprint
Among 71 exercises whose primary muscle is triceps, Machine Triceps Extension ranks #18 by catalogued variation count. The upstream file attaches 2 images to this slug. See the step-count ranking for triceps for peer documentation depth.
Muscles worked
The Free Exercise DB classifies each muscle as primary or secondary. It does not measure activation, so we show involvement, not percentages.
Source: Free Exercise DB primary/secondary muscle classification. Actual recruitment varies by load and form.
Intensity context
For reference, here is where common activities sit on the MET intensity scale. Machine Triceps Extension does not have a measured MET in the source data, its intensity depends on the load and effort you use. Estimate calories for any activity with the calorie calculator.
MET values from the Compendium of Physical Activities (Ainsworth et al., 2011). A general reference scale, not a rating of this specific movement.
How to do it
- Adjust the seat to the appropriate height and make your weight selection. Place your upper arms against the pads and grasp the handles. This will be your starting position.
- Perform the movement by extending the elbow, pulling your lower arm away from your upper arm.
- Pause at the completion of the movement, and then slowly return the weight to the starting position.
- Avoid returning the weight all the way to the stops until the set is complete to keep tension on the muscles being worked.
Common mistakes
- Rushing through reps before the pattern is grooved - at this stage, a slow, controlled tempo (2-3s down, 1-2s up) on Machine Triceps Extension teaches the nervous system the movement far faster than speed does.
- Cutting the range of motion short - moving the triceps through its full safe range on Machine Triceps Extension is what most reliably separates effective reps from wasted ones.
- Using momentum instead of muscle, isolation movements like Machine Triceps Extension reward strict form. If you're swinging the weight, it's too heavy.
- Flaring elbows excessively on push movements, tucked elbows protect the shoulder joint and transfer more force into the target muscles.
- Breathing out of sync with the lift on Machine Triceps Extension - brace and inhale during the lowering phase, exhale on the exertion, especially important with a machine where control matters most.
Who this is for
- People new to resistance training who want to build a foundation in the movement pattern
- People who want to train the Triceps
- People who have access to a machine
Who this is NOT for
- People hunting equipment swaps, this record has none to offer; browse the peer triceps exercises for alternate patterns instead.
- Anyone with acute pain in the joints or muscles involved, pain is a stop signal, not a soreness signal
- People with unresolved injuries in the loaded joints, seek clearance from a physical therapist first
- Anyone with a recent surgery, cardiovascular limitation, or pregnancy complication without physician clearance
Progression path
Once Machine Triceps Extension feels comfortable with your current load, progress by (a) adding reps until you can complete 12+ per set, (b) increasing resistance by 2.5-5%, (c) moving to harder variations such as single-limb or longer lever versions, and eventually (d) stepping up to intermediate-level movements that train the same muscle.
See the Progression guide for a full framework on when to advance, and the Compound vs Isolation guide to decide when to prioritize this movement in your program.
Safety notes · MACHINE · PUSH/ISOLATION · FLOOR
- On PUSH/ISOLATION triceps work, warm up 5–10 minutes before loading Machine Triceps Extension; keep first sets light until the path feels automatic.
- Sharp or joint pain is a stop signal. Muscle soreness during sets is normal; pain is not.
- Beginners on MACHINE gear: cut volume before cutting form, drop a set rather than rush reps.
- General information only. Consult a physician or certified trainer before starting any new exercise program.
Curated workout appearances
Machine Triceps Extension is not currently featured in one of the 186 curated workout routines on this site.
Nationwide exercises with similar documentation depth
Two Free Exercise DB peer sets for Machine Triceps Extension, drawn across all muscles (not the triceps-only related list below). Each metric produces a different neighborhood.
Similar instruction step count
Nearest catalog records by numbered steps.
Similar instruction text length
Nearest catalog records by upstream instruction characters.
Related exercises
Other exercises that target the Triceps.
See all Triceps exercises.
Using the machine triceps extension
Three ways to put it to work.
- Train the triceps 2–3 times a week with 48+ hours between hard sets; pair this with other triceps movements for balanced development. All triceps exercises
- Match the load and rep range to your goal, strength, size, or endurance each call for a different scheme. Strength vs hypertrophy
- As an isolation movement, use it to target the triceps directly after your compound lifts. Compound vs isolation
Form before load. If a movement causes sharp or joint pain, stop and substitute a safer alternative, this is general information, not medical or training advice.