Dumbbell One-Arm Triceps Extension
An intermediate isolation movement that trains the triceps with a dumbbell.
Force Type
Push
direction of effort
Difficulty
Intermediate
training level
Variations
0
equipment swaps
Muscles
1
primary + secondary
The verdict
Dumbbell One-Arm Triceps Extension has 6-step instructions, among the most thoroughly documented 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
#89 of 868
Most thoroughly documented
Numbered source steps, ranked across every documented exercise.
Instruction text
#71 of 868
Most thoroughly documented
A separate character-length placement prevents step count from standing in for explanatory detail.
Dumbbell One-Arm 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.
1,118 71st of 873 higher than 802 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
Dumbbell One-Arm 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 Dumbbell One-Arm Triceps Extension Data Reveals · DEEP · PUSH/ISOLATION
Dumbbell One-Arm Triceps Extension stands out on mechanic class: joint involvement separates this page from isolation peers.
Longer step lists usually mean finer setup cues, not a harder movement by themselves.
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 #5 of 71 by instruction-character length (1.50× the cohort average).
Among the 123 exercises that also use a dumbbell, average instruction length is 790 characters; 13 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)
- Decline Close-Grip Bench To Skull Crusher (7 steps, 1,085 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.
Dumbbell One-Arm Triceps Extension catalog footprint
Among 71 exercises whose primary muscle is triceps, Dumbbell One-Arm 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. Dumbbell One-Arm 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
- Grab a dumbbell and either sit on a military press bench or a utility bench that has a back support on it as you place the dumbbells upright on top of your thighs or stand up straight.
- Clean the dumbbell up to bring it to shoulder height and then extend the arm over your head so that the whole arm is perpendicular to the floor and next to your head. The dumbbell should be on top of you. The other hand can be kept fully extended to the side, by the waist, supporting the upper arm that has the dumbbell or grabbing a fixed surface.
- Rotate the wrist so that the palm of your hand is facing forward and the pinkie is facing the ceiling. This will be your starting position.
- Slowly lower the dumbbell behind your head as you hold the upper arm stationary. Inhale as you perform this movement and pause when your triceps are fully stretched.
- Return to the starting position by flexing your triceps as you breathe out. Tip: It is imperative that only the forearm moves. The upper arm should remain at all times stationary next to your head.
- Repeat for the recommended amount of repetitions and switch arms.
Common mistakes
- Rushing through reps, controlled tempo (2-3s down, 1-2s up) is what drives muscle tension on Dumbbell One-Arm Triceps Extension, not raw speed.
- Cutting the range of motion short - moving the triceps through its full safe range on Dumbbell One-Arm Triceps Extension is what most reliably separates effective reps from wasted ones.
- Using momentum instead of muscle, isolation movements like Dumbbell One-Arm 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 Dumbbell One-Arm Triceps Extension - brace and inhale during the lowering phase, exhale on the exertion, especially important with a dumbbell where control matters most.
Who this is for
- People with 6+ months of consistent training who can perform basic compound lifts with good form
- People who want to train the Triceps
- People who have access to a dumbbell
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 Dumbbell One-Arm 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 expert-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 · DUMBBELL · PUSH/ISOLATION · MID
- Intermediate PUSH/ISOLATION: warm up mobility matching triceps before Dumbbell One-Arm Triceps Extension with a dumbbell.
- Sharp or joint pain is a stop signal. Muscle soreness during sets is normal; pain is not.
- Adjust sets, reps, and rest to recovery; 6 upstream steps are a template, not a prescription.
- General information only. Consult a physician or certified trainer before starting any new exercise program.
Curated workout appearances
Dumbbell One-Arm 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 Dumbbell One-Arm 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 dumbbell one-arm 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.