How to Do One Arm Supinated Dumbbell Triceps Extension
Start and end of one clean rep of One Arm Supinated Dumbbell Triceps Extension.
Quick facts
| Primary muscle | Triceps |
|---|---|
| Secondary muscles | — |
| Equipment | Dumbbell |
| Category | Strength |
How to perform One Arm Supinated Dumbbell Triceps Extension
- Lie flat on a bench while holding a dumbbell at arms length. Your arm should be perpendicular to your body. The palm of your hand should be facing towards your face as a supinated grip is required to perform this exercise.
- Place your non lifting hand on your bicep for support.
- Slowly begin to lower the dumbbell down as you breathe in.
- Then, begin lifting the dumbbell upward as you contract the triceps. Remember to breathe out during the concentric (lifting part of the exercise).
- Repeat until you have performed your set repetitions.
- Switch arms and repeat the movement.
- Switch arms again and repeat the movement.
Muscles worked
- Triceps (primary): straightens the elbow to lock out every press and pushdown.
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.
- Breathe out on the effort and in on the return, keeping one steady rhythm across the set.
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 One Arm Supinated Dumbbell Triceps Extension work?
One Arm Supinated Dumbbell Triceps Extension is a focused movement that primarily works the triceps.
What equipment do I need for One Arm Supinated Dumbbell Triceps Extension?
One Arm Supinated Dumbbell Triceps Extension needs a pair of dumbbells.
How many sets and reps should I do for One Arm Supinated 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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