Single Arm Overhead Extension
Primary
Triceps
Secondary
Shoulders
Equipment
Dumbbell
Difficulty
Beginner
Type
Push
Single Arm Overhead Extension
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Single arm overhead extensions let you focus completely on one tricep at a time, revealing and correcting strength imbalances. The unilateral approach also allows greater range of motion since there is no bar connecting your hands. Each arm works through its natural path for maximum long head stretch.
When to use it
Use for unilateral long head work.
Who it's for
All levels wanting focused isolation.
Hold the dumbbell overhead with your working arm, upper arm close to your ear. Use your free hand to support your working elbow if needed for stability. Lower the dumbbell behind your head until you feel a stretch, then extend back up. Complete all reps on one arm before switching.
Muscles worked: Single Arm Overhead Extension
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Single Arm Overhead Extension form guide
- 1
Stand or sit holding dumbbell in one hand overhead.
- 2
Keep upper arm close to ear, arm fully extended.
- 3
Lower dumbbell behind head by bending elbow.
- 4
Keep upper arm stationary throughout.
- 5
Extend elbow to raise weight back up.
- 6
Complete reps then switch arms.
What are the best tips for the Single Arm Overhead Extension?
Allows focus on each tricep individually.
Use other hand to stabilize working arm if needed.
Great for fixing imbalances.
When to Use the Single Arm Overhead Extension
Use single arm overhead extensions to address tricep imbalances, increase mind-muscle connection, or when bilateral overhead work bothers your shoulders. They fit well as a secondary movement after heavier tricep work, in moderate to high rep ranges (12-15+).
What are common Single Arm Overhead Extension mistakes to avoid?
Letting elbow drift forward.
Letting your elbows drift wide during the Single Arm Overhead Extension shifts load onto your shoulder joint instead of your Triceps (long head). Keep them tucked at about 45 degrees to protect your rotator cuff and keep tension where it belongs.
Moving upper arm for optimal results.
During any pressing movement like the Single Arm Overhead Extension, this mistake reduces how effectively your Triceps (long head) can produce force. Focus on the muscle you're trying to work — if you can't feel your Triceps (long head) driving the movement, something is off.
Using momentum instead of controlled muscle contraction.
Bouncing or using momentum during the Single Arm Overhead Extension takes work away from your Triceps (long head) and puts your connective tissue at risk. Control the weight through the full range — if you can't, lower the load.
Is the Single Arm Overhead Extension right for you?
All levels wanting focused isolation.
How to Program the Single Arm Overhead Extension
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3 sets of 12-15 reps per arm. Rest 30-45 seconds.
What are good alternatives to the Single Arm Overhead Extension?
Overhead Tricep Extension
Tricep Pushdown
Tricep Kickback
Other Variations
- Seated Single Arm Extension
- Cable Single Arm Extension
Frequently Asked Questions About the Single Arm Overhead Extension
The Single Arm Overhead Extension primarily targets the Triceps (long head), making it an effective exercise for triceps development. Secondary muscles worked during the Single Arm Overhead Extension include Anconeus, providing additional training stimulus. Stabilizer muscles engaged include Core, Shoulders.
Yes, the Single Arm Overhead Extension is an excellent choice for beginners due to its straightforward movement pattern and lower technical demands. All levels wanting focused isolation. Start with lighter weights to master proper form before progressing.
For the Single Arm Overhead Extension, the recommended approach depends on your goals. 3 sets of 12-15 reps per arm. Rest 30-45 seconds. For strength, use 8-10 reps. For muscle growth, perform 12-15 reps. For endurance, complete 15-20 reps.
Yes, the Single Arm Overhead Extension can be done at home with a dumbbell. It requires minimal space and is a great option for home workouts targeting triceps.
Good alternatives to the Single Arm Overhead Extension include: Overhead Tricep Extension, Tricep Pushdown, Tricep Kickback. These exercises target similar muscle groups as the Single Arm Overhead Extension and can be used as substitutes based on your equipment availability, gym setup, or training preferences.
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Safety Notes
- Control the weight.
- Keep upper arm stable.