Seated Overhead Dumbbell Triceps Extension

Category: 🟧 Push – Chest / Shoulders / Triceps
Difficulty: ★★☆☆☆ (Intermediate)
Equipment: Short dumbbell (single or pair) + bench with back support

Goal

  • Target the long head of the triceps by placing the arms overhead, where the muscle is in a deep stretch.
  • Build pressing strength and scapular stability through a guided, controlled range of motion.
  • Stimulate triceps hypertrophy while limiting stress on wrists and shoulders if the back stays firmly supported.
  • Ideal exercise at the end of a strength block after presses or dips to fully finish the triceps.

Muscles Worked

  • Primary: Triceps brachii (long head dominant, medial and lateral heads).
  • Synergists: Anterior deltoid, scapular stabilizers.
  • Stabilizers: Lower trapezius, deep core, lumbar stabilizers (when the torso stays neutral).

Variations

  • Classic two-hand version: one dumbbell held with both hands, ideal when learning the movement.
  • Unilateral: one dumbbell per arm to correct strength imbalances and improve mind–muscle connection.
  • Bottom-range isometric: 1–2 s pause in the stretched position to emphasize long-head recruitment.
  • Slow tempo: 3–4 s controlled descent to increase time under tension without relying on heavy loads.

Strong triceps are often built overhead: controlled stretch, tight elbows, back firmly supported.

Technique — Step by Step

  1. Starting position:
    Sit on a bench with back support, upper back firmly against the pad, feet hip-width apart. Hold a dumbbell with both hands (or one dumbbell per arm in the unilateral version) and bring it overhead, elbows pointing up. Keep the chest lifted, core lightly braced, eyes facing forward.
  2. Eccentric phase (lowering):
    As you inhale, bend your elbows and let the dumbbell travel behind your head while keeping the elbows tight and fixed. Aim for a comfortable stretch in the triceps without arching the lower back or letting the elbows flare to the sides.
  3. Concentric phase (lifting):
    As you exhale, extend your arms, driving the dumbbell back up until you return close to vertical. Avoid snapping the elbows; keep a slight bend to maintain muscular tension.
  4. Target range / tempo:
    Use a full, controlled range of motion without torso momentum. Reference tempo: 2 – 1 – 2 (controlled descent – brief pause at the bottom – smooth, controlled lift). The triceps stay under tension from start to finish.
  5. Quick cues:
    “Elbows tight and pointing up”, “Back glued to the pad”, “Lower behind the head, not to the sides”, “Chest tall, no exaggerated arch”.
❌ Common Mistakes✅ Best Practices
  • 🚫Elbows flaring out, shifting stress away from the triceps and into the shoulder.
  • 🚫Excessive lower-back arch to “gain” extra range of motion.
  • 🚫Limited range of motion: the dumbbell only drops a few centimetres behind the head.
  • 🚫Using momentum at the top and snapping the elbows, losing tension at the end of the movement.
  • 🚫Broken or overextended wrists, especially with heavy loads.
  • 💡Choose a load that allows you to keep the elbows tight and stable from start to finish.
  • 💡Keep your back glued to the pad, brace the core and lift the chest to protect the lower back.
  • 💡Lower the dumbbell behind the head into a comfortable stretch with no shoulder pain.
  • 💡Lift with controlled drive, no jerking, and avoid fully locking the elbows.
  • 💡Keep the wrists neutral, aligned with the forearms for optimal force transfer.

Standard Workout Formats

Hypertrophy
(TUT 30–50 s)		Definition / Finisher
(TUT 40–60 s)		Strength / Control
(TUT 20–35 s)
Sets3 – 43 – 43 – 4
Reps8 – 1212 – 156 – 8
Tempo2 – 1 – 22 – 1 – 32 – 0 – 2
Rest60–90 s45–60 s90–120 s
Learn more about tempo

1% Method

PLC Power – Length – Contraction100-Rep Set Density / pump finisher
GoalDensify the key set with a calibrated load and strict tempo.Boost local endurance and triceps pump at the end of the session.
Structure1 “key” set based on the PLC widget (validated tempo and range of motion).100 total reps (e.g. 10×10 or 5×20) with clean technique.
LoadLoad selected from the widget, targeting RPE 8–9 without cheating with the back.Light to moderate, focused on burn and quality of execution.
Intra-set restContinuous tempo (no rest) or very short micro-pause at the top.10–20 s between mini-blocks to maintain form and tension.
Frequency1–2×/week on the main triceps exercise of the block.≤ 1×/week as an arm or upper-body finisher.
Key cueElbows tight, back glued to the pad, controlled range from start to finish.Break the set into chunks early, keep the elbows stable and breathe regularly.
100-Rep Set

Use PLC

1% Method Integration

Phase 4 – Muscle Block (7 to 10 min)

Integration Rationale

  • Recommended placement: after a compound push (press, dips) to finish the triceps specifically.
  • Optional superset with a light back or biceps movement to maintain blood flow without overloading the elbows.
  • 100-Rep Set: reserve for phases where the athlete tolerates deep stretches well, and keep technique extremely strict.
  • PLC: ideal for learning to manage load through full range of motion without cheating with the back or letting the elbows flare.

Recommended Frequency

  • 1 to 2 times per week depending on overall upper-body volume and elbow recovery.
  • Alternate with other triceps variations (cable, dips, kickbacks) to distribute joint stress.

Back supported, elbows tight, controlled range: the recipe for a strong long head that carries all your presses.