Dumbbell One Arm Kickback is a beginner dumbbell exercise for the primary: triceps brachii secondary: deltoids. Most lifters train it for 3 to 4 sets of 12 to 15 reps.
Hinged forward with your upper arm pinned at your side, you extend one elbow to kick the dumbbell straight back, then return under control. Keeping the upper arm still isolates the triceps at the end of the movement where they're weakest.
Kickbacks belong at the end of a push or arm session, after presses and heavier triceps work like dips or skull crushers. Program 3 to 4 sets of 12 to 15 reps per arm with a one second hold at full extension; the exercise loads the triceps hardest in the fully shortened position, which is why it should be a finisher rather than a main lift.
Hinge until your torso is nearly parallel to the floor and set the upper arm level with the back before the first rep. Most people should start with 4 to 6 kg and add 1 to 2 kg once 15 strict reps are easy on both arms. The most common fault is the upper arm dropping toward the floor between reps, which turns the movement into a swing. Fix it by pressing the elbow up slightly higher than the torso and keeping it there for the whole set.
Begin with 4 to 6 kg; even experienced lifters rarely need more than 10 to 12 kg because the lever is long and the top position is the hardest point. If the elbow moves, the dumbbell is too heavy.
Yes, research on triceps activation consistently ranks the kickback near the top for the lateral and long heads when done strictly. The limitation is loading, so pair it with a heavier pressing or extension movement.
Pushdowns allow more load and a more even resistance curve, while kickbacks hit the peak contraction harder. Doing pushdowns first and kickbacks last gives the best of both.
Log your dumbbell one arm kickback sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.