Dumbbell Single-Arm Triceps Kickback
What Is the Dumbbell Single-Arm Triceps Kickback?
Dumbbell Single-Arm Triceps Kickback is an isolation exercise that primarily targets the triceps, working all three heads as the elbow straightens behind the body. It is a beginner-level movement, suited to those who are building their foundation in upper-body strength training.
Performing this exercise while supported by a bench adds extra stability, allowing you to focus more precisely on form and controlled movement. This reduces the reliance on core balance and minimizes lower back strain compared to the standing Dumbbell Triceps Kickback.
The dumbbell gives the kickback an uneven resistance profile. With the forearm hanging straight down at the start, gravity barely loads the triceps, and the load peaks as the forearm reaches horizontal at full extension. That is why the top of each rep feels hardest, and why the weight used is far lighter than for presses or pushdowns. A Cable Triceps Kickback spreads the tension more evenly across the range.
The long head of the triceps also crosses the shoulder, so holding the upper arm in line with or slightly behind the torso keeps that head at a short length. The kickback therefore trains the triceps close to full contraction rather than under stretch. It fits best late in an arm or push session as an accessory after compound presses, alongside an overhead extension that works the long head at a longer length.
It's ideal for light to moderate weight training where the goal is mind-muscle connection rather than moving heavy loads. Anyone who struggles to keep the upper arm still can learn the elbow-only motion first with a Cable Triceps Pushdown (Rope), where the upper arm simply hangs at the side.
Muscles Worked
- Deltoid
- Low
- Latissimus Dorsi
- Minimal
Instructions
- Place one knee and the same-side hand on a flat bench, with your other foot planted on the floor.
- Hold a dumbbell in your free hand with a neutral grip, letting your arm hang straight down.
- Tilt your torso forward until it is close to parallel with the floor, keeping your back flat and both shoulders level.
- Raise your upper arm until it sits alongside your torso, with the elbow bent at about 90 degrees and the forearm hanging straight down.
- Keeping your upper arm stationary, extend your elbow and push the dumbbell back until your arm is fully straightened.
- Squeeze the triceps at the top of the movement.
- Slowly return the dumbbell to the starting position by bending the elbow again.
- Complete the desired reps, then switch sides.
Common Mistakes
Swinging the dumbbell
Using momentum instead of controlled movement reduces effectiveness and can lead to joint strain.
Dropping the elbow
Allowing the elbow to lower during the extension takes tension off the triceps.
Overarching the back
Failing to maintain a neutral spine can cause lower back discomfort over time.
Choosing weights that are too heavy
Heavy dumbbells can compromise form, making it harder to properly isolate the triceps.
Twisting the torso
Letting the working shoulder rise and the chest rotate open to heave the weight turns the lift into a trunk swing and strains the lower back and shoulder.
Injuries
Dumbbell Single-Arm Triceps Kickback is a low risk exercise when performed with proper technique. Possible injuries include elbow strain from using excessive weight or jerky movements. Shoulder discomfort may also occur if the arm is not properly stabilized throughout the exercise.
To prevent injuries, prioritize form over heavy lifting, move slowly and deliberately, and ensure that your upper arm stays fixed parallel to the body during each repetition. Straighten the elbow fully under control rather than snapping into lockout, and keep both shoulders level so the torso does not twist. The bench takes most of the load off the lower back as long as the spine stays neutral.
If holding the upper arm still is the problem, drop to a lighter dumbbell or practice the elbow motion with a Cable Triceps Pushdown (Rope). Once the strict version is easy, the Cable Triceps Kickback keeps tension on the triceps through the whole range.
Stop the set if you feel sharp pain at the back of the elbow near lockout, pain at the front or top of the shoulder, or numbness or tingling down the arm. Have elbow or shoulder pain that persists assessed by a physical therapist or doctor before continuing.
Frequently Asked Questions
- Q: Should I lock out my elbow at the end of the movement?
Fully extend the arm but avoid forcefully locking the elbow to protect the joint.
- Q: How should I breathe during triceps kickbacks?
Exhale as you extend the arm back and inhale as you return to the starting position.
- Q: Is it better to use lighter or heavier weights for triceps kickbacks?
Lighter weights are typically better to maintain strict form and maximize triceps engagement.
- Q: Is a cable kickback better than the dumbbell version?
Neither is better across the board. The dumbbell loads the triceps least with the forearm hanging down and most at full extension, while a Cable Triceps Kickback keeps tension through more of the range. The dumbbell version needs only a bench and one weight, so use whichever you can perform strictly and keep progressing.
- Q: Should I pair kickbacks with an overhead triceps exercise?
Yes, if triceps size is the goal. The kickback holds the upper arm in line with or slightly behind the torso, where the long head is short, and a 12-week study of 21 adults found cable elbow extensions done overhead grew the triceps more than the same extensions done with the upper arms down at the sides, most of all in the long head. Adding an overhead extension such as the Cable Overhead Triceps Extension covers the stretched position the kickback misses.