How to Do Standing One-Arm Dumbbell Triceps Extension
Start and end of one clean rep of Standing One-Arm Dumbbell Triceps Extension.
Quick facts
| Primary muscle | Triceps |
|---|---|
| Secondary muscles | Chest, Shoulders |
| Equipment | Dumbbell |
| Category | Strength |
How to perform Standing One-Arm Dumbbell Triceps Extension
- To begin, stand up with a dumbbell held in one hand. Your feet should be about shoulder width apart from each other. Now fully extend the arm with the dumbbell over your head. Tip: The small finger of your hand should be facing the ceiling and the palm of your hand should be facing forward. The dumbbell should be above your head.
- This will be your starting position.
- Keeping your upper arm close to your head (elbows in) and perpendicular to the floor, lower the resistance in a semicircular motion behind your head until your forearm touch your bicep. Tip: The upper arm should remain stationary and only the forearm should move. Breathe in as you perform this step.
- Go back to the starting position by using the triceps to raise the dumbbell. Breathe out as you perform this step.
- Repeat for the recommended amount of repetitions.
- Switch arms and repeat the exercise.
Muscles worked
- Triceps (primary): straightens the elbow to lock out every press and pushdown.
- Chest (secondary): pushes the arms forward and across the body — your horizontal pressing power.
- Shoulders (secondary): raises and rotates the arms and drives everything overhead.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
Form tips
- Fix the elbows in place and let only the forearms move, keeping the load on the triceps.
- Each side works on its own, so match the depth and speed of both arms and don't let the stronger side take over.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Warm up the pattern with a couple of lighter, submaximal sets before your working sets.
Common mistakes
- Letting the elbows flare and drift forward so the shoulders quietly take over.
- Letting the dumbbells drift apart or clang together at the top instead of controlling the path.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does Standing One-Arm Dumbbell Triceps Extension work?
Standing One-Arm Dumbbell Triceps Extension mainly works the triceps, with the chest, shoulders helping as secondary movers.
What equipment do I need for Standing One-Arm Dumbbell Triceps Extension?
Standing One-Arm Dumbbell Triceps Extension needs a pair of dumbbells.
How many sets and reps should I do for Standing One-Arm Dumbbell Triceps Extension?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
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