Best Workout for Triceps on a Cable Machine

If you want strong, well-defined triceps, the cable machine offers some of the best exercises to target all three heads of the triceps muscle. Cable machines are essentially the MacGyver of gym equipment (or if you don’t get that reference, the “Swiss army knife”) (and you’ve got some pop culture catching up to do on Apple TV). 

In other words, if you’re creative and knowledgeable, an effective workout can be accomplished with only a cable machine for just about every muscle group. For triceps, whether you're new to the gym or a seasoned lifter, understanding how to effectively use this equipment can make a big difference in your arm development.  

Parts of the Triceps Muscle 

The triceps, named for its three distinct heads ("tri-" means "three," and "ceps" comes from "head"), is located on the back of your upper arm. Here's a quick breakdown: 

• Lateral Head: The outer part of the triceps, key for pushing movements and giving your arm a defined look from the side. 

• Medial Head: Found on the inner part of the upper arm, it's crucial for all elbow extension and stabilizing movements. 

• Long Head: This part runs along the back of your arm, attaching to your shoulder blade. It's involved in shoulder stability and helps with overhead movements. 

Together, these three heads make up the triceps muscle, essential for arm strength and stability. 

Why Workout the Triceps? 

Working out your triceps is crucial for several reasons, especially if you're aiming for bigger, stronger arms: 

Arm Size and Definition: The triceps make up about two-thirds of your upper arm muscle mass, so if you're looking to increase the size of your arms, targeting your triceps is key. Well-developed triceps give your arms a fuller, more balanced look. 

Strength and Power: The triceps play a major role in many pushing movements, such as bench presses, push-ups, and overhead presses. Strong triceps improve your performance in these exercises, allowing you to lift heavier and push harder. 

Joint Stability: Strong triceps help stabilize your elbow and shoulder joints, reducing the risk of injury during various activities, whether you're lifting weights or just going about daily tasks. 

Tricep Pushdowns vs. Tricep Extensions  

Two of the most popular cable exercises for triceps are the tricep pushdown and the tricep extension. While both exercises target the triceps and are effective for strength development, they do so in slightly different ways.  

Tricep Pushdown 

Performed by pressing a bar or rope down toward your thighs, the pushdown primarily targets the lateral and medial heads of the triceps. What this means for you: It's great for adding mass and definition to your arms, building what many lifters refer to as “a horseshoe.”  

Tricep Extension 

This movement, often done overhead or at shoulder level, focuses on the long head of the triceps, adding more shape and fullness to the muscle. The classic adage “a long muscle is a strong muscle” is demonstrated well here, as it utilizes the full length of the triceps.  

Incorporating both exercises into your arm routine ensures you hit the triceps from different angles, leading to more balanced muscle development.  

How to Do Tricep Pushdowns with a Rope: Proper Form & Technique  

1. Set Up

2. Grip and Position

Keep your elbows close to your body, your back straight with a neutral spine, and engage your core to stabilize. 

3. Execute the Pushdown 

Pull the rope down by extending your elbows until your arms are fully straight. Separate your hands at the bottom to maximize tricep activation. And, while not required, squeeze for a second at each lockout for the fullest result. Burn, baby, burn!

4. Control the Return

Slowly return to the starting position, keeping control of the movement. By capitalizing on both the positive motion (the extension) and the negative (the return), you will gain more stability, strength, and aesthetic fullness. 

This exercise with a rope is effective because it allows for a greater range of motion compared with other bar attachments, leading to better muscle activation. Also, unlike bar attachments, the rope pushdown forces each tricep to work independently, especially at the spread. This helps develop an even distribution of strength in both of your arms.  

Common Mistakes in Tricep Pushdowns with Rope  

Avoid these common pitfalls to get the most out of your tricep pushdowns:  

Using Too Much Weight: This can cause you to rely on momentum instead of flexing it down as intended. If your bodyweight or your chest take over the motion, your triceps miss out on what should be theirs.  

Elbows Flaring Out: Keep your elbows close to your body to target the triceps properly. A simple way to remember is to imagine a bar going from one tricep to the other, connecting through your body. This helps prevent the arms from flailing and guides a more controlled motion. 

Inadequate Range of Motion: Fully extend your arms for the best results. If you cannot lock out your elbows, lighten the weight and try again. Do not rob yourself of the range of motion at the top or the bottom of the lift. (Mantra: Long muscle = strong muscle.) 

Leaning Too Far Forward: This shifts the focus away from the triceps into the chest and can strain your lower back. Once again, try to maintain a neutral spine. 

Tricep Pushdown Alternatives & Variations  

To keep your workouts ever fresh and effective, try these alternatives and variations:  

Overhead Rope Tricep Extension: Targets the long head of the triceps more directly, with the added benefit of core stabilization during the exercise.  

Single Arm Rope Tricep Extension: Focuses on isolating each tricep, helping to correct muscle imbalances. The weight will be humbling, but the results are *chef’s kiss*! 

Tricep Dips: A great bodyweight alternative that also engages the chest and shoulders. Much like cable pushdowns, the narrower and closer to your body the dip bars, the more triceps it will engage, while the wider the dip bars, the more the chest takes over. Either are great for developing pressing power, but narrow will add more to your arm day.  

You can do these on ISO Arms, too. 

Different Attachments: You can also mix up your tricep cable workouts by using different handles and attachments. Try the D-handle for single-arm pressdowns, kickbacks, or extensions; the Triangle Row instead of the rope; the hard chrome Tricep Pressdown Bar with knurling and end pieces to help your hands stay in place; or the USA Leather Accessory Strap (pictured below) in lieu of a rope. 

Rope Tricep Extension Instructions & Tips  

For the rope tricep extension:  

1. Attach the rope to a lower pulley of the cable machine. 
2. Face away from the machine, grip the rope with both hands, and extend it overhead with your elbows bent. 
3. Straighten your arms by extending your elbows fully, then slowly return to the starting position. 

Tips:  

• Keep your upper arms stationary to fully engage the triceps. Burns so good!
• Control the movement throughout the exercise to maximize effectiveness and reduce the risk of injury. If you are struggling to control your core, lighten the weight.

Sometimes it also helps to use a bench with back support during this exercise.  

How Many Sets and Reps Should You Do?  

For muscle growth, aim for 3 to 4 sets of 8 to 12 reps. If strength is your goal, 4 to 5 sets of 6 to 8 reps with heavier weight is recommended. Adjust your workout based on your experience level and fitness goals. With either goal, always remember to warm up first and cool down after.  

Bottom Line

The cable machine is an invaluable tool for building strong, well-defined triceps. Whether you're focusing on tricep pushdowns, extensions, or their variations, mastering these exercises will help you achieve balanced arm development and overall upper body strength. Remember to pay attention to your form, control your movements, and experiment with different exercises to keep your routine effective and engaging.