Exercise
Tricep extension (tricep pushdown) — the most popular isolation exercise for the triceps brachii (triceps). Performed on a cable machine with a rope, straight or V-shaped handle. The triceps makes up about 2/3 of the upper arm circumference, so training it is essential for bigger arms.
🎯 Primary Muscles
Triceps brachii — all three heads.
🔧 Secondary Muscles
Anconeus, forearm extensors.
⚡ Exercise Type
Isolation exercise. Single-joint — only the elbow joint works.
📊 Difficulty Level
Easy. Excellent exercise for beginners learning tricep activation.
📋 Proper Technique
1
Starting Position: Stand facing the cable machine, grab the rope/handle. Elbows tucked to your sides, bent ~90°.
2
Body position: Lean slightly forward. Back straight. Feet shoulder-width apart or one foot forward.
3
Elbow fixation: Elbows must be glued to your sides and stay still throughout the entire exercise. This is critically important.
4
Extension: Extend your elbows, pressing the handle down. Only the forearms move — the upper arms stay in place.
5
Bottom position: Fully extend your arms. With a rope — slightly spread your hands at the bottom to fully contract the triceps.
6
Return: Allow the weight to rise in a controlled manner until the elbows are bent ~90° again. Do not let the weight yank your arms.
💪 Muscles
| Muscle Group | Muscle | Role |
|---|---|---|
| Upper arm (head) | Triceps brachii — long head | Primary — elbow extension |
| Upper arm (head) | Triceps brachii — lateral head | Elbow extension — gives the "horseshoe" shape |
| Upper arm (head) | Triceps brachii — medial head | Elbow extension — deepest head |
| Elbow | Anconeus | Assists elbow extension |
⚠️ Mistakes
- Elbow movement: Elbows drift away from your sides or move back and forth. They must stay glued.
- Using body weight: Leaning with the whole body instead of working the triceps. Solution: reduce the weight.
- Too much weight: Forces you to use your shoulders and back. The triceps is an isolation exercise — use a controlled weight.
- Incomplete Range of Motion: Arms are not fully extended or not bent to 90°. Full range of motion is essential.
- Too Fast Tempo: The weight "drops" down. Control the lowering phase.
🔄 Variations
| Variation | Description | Difficulty |
|---|---|---|
| With rope | Classic — allows a neutral grip and spreading at the bottom. | Lightweight |
| With V-handle | V-shaped handle — a more neutral wrist position. | Lightweight |
| With a straight bar | Straight bar — emphasizes the lateral tricep head more. | Lightweight |
| Reverse grip | Palms up — emphasizes the medial (deep) head. | Intermediate |
| Single-arm | Each arm separately. Corrects imbalance. | Intermediate |
| Overhead extension | Arms overhead — stretches the long head of the triceps. | Intermediate |