Standing Bent-Over One-Arm Dumbbell Triceps Extension
The standing bent-over one-arm dumbbell triceps extension has you hinge forward at the hips, keep your upper arm fixed close to your body, and extend your forearm back and up against a dumbbell. Unlike a straight kickback, it allows a longer stretch at the bottom before you drive the weight through to full extension, which many lifters feel more directly in the triceps. It's a simple isolation move that needs nothing more than one dumbbell and a stable hinge position.
Why it works
Your triceps straighten your elbow, and this exercise isolates exactly that motion by fixing your upper arm in place and moving only your forearm through a full range from a deep bend to a locked-out extension. Bending forward at the hips lets gravity pull the dumbbell down and back instead of straight down, which keeps tension on the triceps through more of the range than a kickback where the arm stays closer to horizontal throughout. Because the shoulder barely moves, nearly all of the work falls on the triceps, with the shoulder mostly just holding the upper arm steady.
Set up
- Hold a dumbbell in your working hand and rest the other hand on a bench or sturdy surface for support
- Hinge forward at the hips until your torso is roughly parallel to the floor, keeping a flat back
- Bring your upper arm up so it's close to your body, elbow bent and pointing toward the ceiling
- Choose a light to moderate dumbbell, since this is a single-joint isolation movement
How to do it
- Start with your elbow bent and the dumbbell hanging down near your shoulder
- Extend your forearm back and up by straightening your elbow, keeping your upper arm still
- Pause briefly at full extension and squeeze your triceps
- Lower the dumbbell back down under control to the starting bent-elbow position
- Repeat for your full set, then switch arms
Form cues
- Keep your upper arm pinned close to your side throughout the movement
- Extend only at the elbow, not by swinging your shoulder or torso
- Squeeze the triceps at the top before lowering with control
Breathing: Exhale as you extend the dumbbell back and inhale as you lower it to the bent-elbow starting position.
Common mistakes
Swinging the upper arm or shoulder to help move the weight
Fix: Keep your upper arm fixed against your side and let your forearm do all the moving
Using a dumbbell too heavy to control through a full range
Fix: Drop the weight until you can extend fully and lower with control on every rep
Rounding the back instead of hinging with a flat spine
Fix: Set your hinge position before you start the set, keeping your back flat and core braced
How to program it
- Two to three sets of ten to fifteen reps per arm works well for this isolation movement, since it's a smaller muscle that responds to moderate volume
- As a light, single-joint accessory, two to three sessions a week is reasonable alongside your other upper-body training
- Pair it at the end of a push or arm-focused session rather than as a primary triceps movement, since the light load limits overall strength carryover
- Increase the stretch at the bottom gradually as your elbow mobility allows, rather than forcing a deeper range than feels controlled
Safety notes
- Keep the supporting hand firmly planted and your hinge stable so you don't lose balance mid-rep
- Use a weight light enough that your elbow stays the only joint moving through the exercise
Exercise profile
- Force
- Push
- Mechanics
- Isolation
- Category
- Strength
Frequently asked questions
How heavy should the dumbbell be for this triceps extension?
Light to moderate is enough, since the goal is a full, controlled range of motion rather than maximal load on a single joint.
What's the difference between this and a triceps kickback?
A kickback usually starts with the arm closer to a straight position and moves through a shorter range, while this extension starts from a deeper elbow bend for a longer stretch and range of motion.
Can I do this triceps extension seated instead of standing?
Yes, a seated bent-over version works the same way and can feel more stable if balance while hinging forward is a limiting factor.
Why can't I feel this much in my triceps?
Check that your upper arm stays completely still; if your shoulder or torso is moving to help lift the weight, the triceps are doing less of the work than they should.