Last Updated on January 26, 2025

Overview:
The standing one-arm triceps extension with a dumbbell is a focused isolation exercise that targets the triceps. This single-arm variation allows for greater control and helps correct muscle imbalances between the arms. Itโ€™s an effective movement for building arm strength and enhancing muscle definition in the back of the upper arms.


Muscles Worked:

  • Primary: Triceps brachii (long head, medial head, and lateral head)
  • Secondary: Shoulders (stabilizers) and core (for balance)

How to Perform Standing One-Arm Triceps Extension

Step-by-Step Instructions:

  1. Set Up:
    • Select a dumbbell of appropriate weight.
    • Stand upright with your feet shoulder-width apart to ensure a stable base.
    • Keep your back straight, shoulders relaxed, and your core engaged by pulling your abs inward.
  2. Starting Position:
    • Hold the dumbbell in your right hand with your palm facing up (supinated grip).
    • Raise your arm fully overhead, ensuring your wrist is aligned with your shoulder.
    • Keep your elbow close to your head, pointing upward.
  3. Lower the Dumbbell:
    • Slowly lower the dumbbell in an arc behind your head, bending your elbow without moving your upper arm.
    • Lower the dumbbell until it is aligned with your spine or as far as your mobility allows without discomfort.
  4. Return to Start:
    • Engage your triceps to extend your elbow and lift the dumbbell back to the starting position overhead.
    • Move slowly and avoid locking your elbow at the top.
  5. Switch Arms:
    • Complete the desired number of repetitions with your right arm, then switch to your left arm and repeat.

Tips for Proper Form:

  • Elbow Position: Keep your elbow close to your head throughout the exercise. Avoid letting it flare out to maintain proper isolation of the triceps.
  • Controlled Movement: Perform the exercise slowly to maximize triceps engagement and prevent momentum from taking over.
  • Neutral Spine: Stand tall with your back straight and avoid arching your lower back. Engage your core to support your posture.
  • Breathing: Inhale as you lower the dumbbell behind your head, and exhale as you lift it back to the starting position.

Reps and Sets:

  • Beginners: 2โ€“3 sets of 12โ€“15 repetitions per arm.
  • Intermediate/Advanced: 3โ€“4 sets of 10โ€“12 repetitions with a heavier dumbbell.

Benefits of Standing One-Arm Triceps Extension:

  1. Triceps Isolation: Effectively targets and strengthens the triceps, improving arm definition and strength.
  2. Improved Muscle Imbalance: Training one arm at a time helps correct any strength or size discrepancies between your arms.
  3. Enhanced Stability: Engages your core and shoulder stabilizers for balance, contributing to overall strength.
  4. Functional Strength: Builds pushing strength essential for sports and daily activities.

Common Mistakes to Avoid:

  1. Elbow Flaring: Keep your elbow close to your head to ensure proper triceps engagement.
  2. Arching the Back: Avoid leaning backward by engaging your core to maintain a neutral spine.
  3. Using Too Much Weight: Start with a manageable weight to ensure good form and avoid unnecessary strain on your shoulder and elbow joints.
  4. Fast Movements: Avoid rushing through the exercise; perform it slowly and with control.

Incorporate the standing one-arm triceps extension into your arm workout routine to build stronger, more defined triceps. Combine it with other triceps exercises like dips and pushdowns for a well-rounded arm day!