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Crucifix Curl

Crucifix curls involve using a crossover cable machine. In this exercise, you will have two cables from each side equally loaded and curl your forearms towards your head. This isolates the biceps, maximizing tension for growth. 

The position also challenges your core, helping you improve stability and teaches you to focus on your posture.

When done right, crucifix curls target both heads of the biceps, leading to balanced and symmetrical growth. Consistent practice can add noticeable size to your arms.

This exercise also boosts strength for compound lifts. Stronger biceps support your performance in rows and pull-ups. Adding crucifix curls to your routine is a smart move.

How To Do

  1. On the cable crossover machine, start by adjusting the cables to shoulder height. Attach single-handle grips to each cable.
  2. Stand in the center and hold the handles with arms extended out to the sides and palms facing up.
  3. Position your feet shoulder-width apart. 
  4. Tighten your core and stand tall with a slight bend in your knees. Take a breath in.
  5. Curl the handles towards your head slowly, keeping your elbows and upper arms still. Exhale as you curl.
  6. At the top, squeeze your biceps hard and hold for a couple of seconds to feel the muscle contraction.
  7. Return the handles back to the starting position with control, maintaining tension in the biceps. Inhale before performing each repetition.
  8. Perform a number of reps based on your goals; refer to the table below.

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Tips From Expert

  • Core engagement is crucial to maintaining your body stable and preventing swaying during exercise.
  • Activate your leg muscles, particularly quads, to anchor your body and prevent unnecessary movement.
  • Ensure your elbows are fixed in position to maintain proper form and isolate the biceps.
  • Avoid using excessive weight to reduce strain on joints and ensure bicep activation.
  • Focus on slow, controlled reps for maximum effectiveness and to reduce the risk of injury.
  • Avoid holding your breath throughout the set.

Optimal Sets and Reps

The table below will help you decide on the correct rep range and sets based on your goals.

Training TypeSetsReps
Strength Training3–54–6
Hypertrophy3–48–10
Endurance Training3–412–20
Power Training3–51–3 (Explosive)
Optimal Sets & Reps of Crucifix Curl

How to Put in Your Workout Split

Crucifix curls are a powerful exercise that can isolate the biceps. It can contribute to strength and growth in this muscle. To include crucifix curls in your workout split, consider these recommendations:

Arm-Focused Day — Add crucifix curls to your arm days. Perform them alongside tricep exercises or other bicep peak exercises.

Push/Pull Split — Add crucifix curls as a finisher on pull days. This approach ensures balanced muscle training and proper recovery.

Upper/Lower Split — Include crucifix curls in your upper body workouts. Perform them after primary lifts, like pull-ups and rows.

Full-Body Routine — Integrate crucifix curls into your full-body workouts once or twice weekly.

Begin with a weight that allows you to complete all reps with good form. As you get stronger, you can increase the weight gradually. Remember, this is a smaller muscle, so you may only be able to increase weight in small increments.

You can follow the below loading recommendations according to your training goal based on your one-repetition maximum (1RM). This is the maximum weight a person can lift for a single repetition of an exercise. 

  1. Strength Training — 80%–95% of your 1RM. 
  2. Hypertrophy Training — 60%–80% of your 1RM. 
  3. Endurance Training — 40%–60% of your 1RM.
  4. Power Training — 85%–100% of your 1RM.

Primary Muscle Groups

Biceps Long Head

Most outside part of your bicep.The front of your upper arm.

Biceps Short Head

Most inside portion of the biceps. Located at the front of your upper arm closest to your chest.

Biceps Long Head

The biceps brachii is a muscle in the upper arm consisting of two main heads. These are the long head and the short head. 

The long head of the biceps brachii is located on the outer side of the upper arm. This muscle contributes to elbow flexion and helps stabilize the shoulder joint during crucifix curls. It is one of the primary muscles worked during this exercise. 

Maximal voluntary contraction (MVC) measures the maximum effort a muscle can produce during a specific movement or contraction. In a pronated position or when the wrist is rotated inwards, the biceps brachii achieves 10%–20% MVC during elbow flexion. The load used in an exercise like this one could potentially increase this activation rate.

There are specific long-head exercises that target this muscle even more than crucifix curls.

Biceps Short Head

The short head of the biceps brachii is located on the inner side of the upper arm. This part of the muscle also contributes to elbow flexion.

Along with the long head, the short head is one of the primary movers for crucifix curls. It plays a significant role in the exercise, aiding in flexing the elbow.

The short head's activation contributes to the overall effort of the biceps brachii. It works alongside the long head to support the movement and maintain joint stability.

To build strength and size in the short head, you can add other short-head exercises to your bicep workouts.

Secondary Muscle Groups

Anterior Deltoid

Muscles located at the front of your shoulder region

Brachialis

Muscle which starts at the middle of your upper arm and connects just below the elbow.

Wrist Flexors

Muscles that span the inside of your lower arm, between your elbow and wrist palm side up.

Brachioradialis

Muscle located between outside portion of your forearm from the elbow to the wrist.

Anterior Deltoid

The anterior deltoid is a muscle located on the front of the shoulder. It primarily functions to flex and internally rotate the shoulder towards the body. 

In this exercise, the anterior deltoid is more stretched and elevated compared to other bicep curl variations. This puts more demand on the muscle to stabilize the shoulder throughout the movement.

Brachialis

The brachialis is a muscle located beneath the biceps brachii. It originates from the lower half of the upper arm bone and inserts into the forearm bone.

During crucifix curls, the brachialis assists in elbow flexion. It works together with the biceps brachii to lift the weight, contributing to the overall effort.

Although not the key player in this movement, the brachialis plays a role in generating force and supporting the biceps.

Brachioradialis

The brachioradialis is a forearm muscle that extends from the upper arm bone to the thumb side forearm bone. It helps with elbow flexion and forearm rotation.

In crucifix curls, the brachioradialis is engaged to assist in stabilizing the elbow joint. It provides additional support to the biceps brachii during the curling motion.

This muscle becomes more active as the angle of the elbow flexion changes, aiding in the smooth execution of the exercise.

Wrist Flexors

The wrist flexors are a group of muscles on the forearm responsible for bending the wrist and gripping. They begin from the top of the forearm bone and insert into the hand bones.

During crucifix curls, the wrist flexors work to stabilize the wrist and maintain grip strength. They are engaged to prevent the wrists from overextending under load.

Proper engagement of the wrist flexors ensures a firm grip and helps maintain control throughout the movement.

Equipment

Single Grip Handle

Narrow Cable Pulley Towers

Single Grip Handle

This can be attached to a cable machine and used for a wide range of unilateral resistance exercises. Ensure you keep a firm grip.

Narrow Cable Pulley Towers

This versatile cable machine is suitable for a wide range of exercises. It provides constant resistance. Ensure the cable points are firmly clipped in.

Variations

Exercises that target the same primary muscle groups and require the same equipment.

Who Should Do?

Athletes

Strength training is effective in reducing the likelihood of sports injuries. Bicep-strengthening exercises like crucifix curls contribute to overall strength and endurance. 

Overuse injuries of the elbow and shoulder are prevalent in many sports. For example, the recorded incidence rates are as high as 52% and 63% in volleyball and handball players, respectively. 

Athletes can benefit from crucifix curls as they can contribute to bicep strength and shoulder stability. This can be very helpful in preventing such injuries.

Other types of athletes that can benefit from upper body strength exercises are weightlifters, rowers, and CrossFit enthusiasts. All these groups require strong biceps for better grip, power, and endurance; crucifix curls can help improve strength.

Bodybuilders

Crucifix bicep curls can contribute to overall bicep muscle hypertrophy. This exercise offers a different angle and stimulation to the muscle. Targeting muscles at different angles can help promote varied stimulation.

Those Who Want To Challenge Their Biceps Further

Those looking to challenge their biceps beyond traditional curls will find crucifix curls beneficial. This exercise provides a unique stretch and contraction, enhancing muscle activation. It helps achieve greater muscle hypertrophy and improve overall arm strength.

This exercise also forces you to use your stabilizer muscles more than other bicep curl variations. It can also challenge your balance and make you become more aware of how your whole body works together functionally.  

Who Should Not Do?

Individuals Who Have Poor Core Awareness

Individuals with poor core awareness may struggle with the crucifix curl, as maintaining proper posture is crucial. Weak core stability can lead to incorrect form and potential injury. 

Remember, work on your core strength and stability first before attempting exercises that require core engagement. Instability in this exercise could lead to it not being very effective.

Individuals With Elbow Or Shoulder Injuries

Those with existing elbow or shoulder injuries should avoid crucifix curls. The exercise requires significant joint stability and can aggravate pre-existing conditions. It’s important to choose exercises that don’t strain or worsen these injuries.

Consult with your healthcare provider and rectify any underlying issues that could trigger further damage to these joints. Surgery, physical therapy, or both may be needed before returning to exercises such as crucifix curls.

Beginners

Beginners might find crucifix curls challenging due to the need for proper form and technique. It’s advisable to build foundational strength with simpler bicep exercises before incorporating more advanced moves. 

Exercises like dumbbell bicep curls could be a better choice as they don’t rely on core strength as much. Having said that, even in other bicep exercises, it’s advisable to practice core engagement.

Benefits Of The Crucifix Curl

Enhances Stability

Crucifix curls can enhance stability by engaging the core and shoulder muscles throughout the movement. This helps to maintain proper form and control.

As you perform the exercise, the anterior deltoid and biceps work together to stabilize the shoulder joint. Improved shoulder stability translates to better performance in other exercises and sports activities.

Additionally, crucifix curls require balance and control, which strengthens the stabilizing muscles in the arms and shoulders. This contributes to overall stability and reduces the risk of injury during dynamic movements.

Improved Strength

Crucifix curls can improve strength by targeting the biceps with a unique movement. They can be a great additional challenge to other bicep exercises.

As you curl the weight in this position, the biceps work hard to lift and control the load. This increased effort leads to greater muscle growth and strength gains.

Additionally, the exercise engages supporting muscles in the shoulder and forearm. Strengthening these areas contributes to overall arm strength and performance in various daily activities and sports.

Increased Size

The crucifix curl is effective for increasing bicep size by targeting the muscle through a unique angle. This position promotes muscle hypertrophy in a different way from other bicep exercises. Adding variety to your workouts can help produce an increase in size.

The exercise causes significant muscle stretch and contraction, which is crucial for stimulating growth. This consistent tension encourages the biceps to expand and become larger.

Additionally, the isolation of the biceps during crucifix curls maximizes the effort applied directly to the muscle. This focused activation helps achieve noticeable increases in muscle size over time.

Frequently Asked Questions

What do crucifix curls work?

Crucifix curls primarily work the biceps brachii, targeting both the long and short heads. They challenge the muscle at a different angle than other bicep curl variations.

What are common mistakes when doing crucifix curls?

Common mistakes include using too much weight, improper shoulder alignment, and not engaging the core, leading to poor form.

Are crucifix curls effective?

Yes, crucifix curls are effective for isolating the biceps, enhancing both muscle size and strength while also improving stability.

How often should I do crucifix curls?

Incorporate crucifix curls along with other bicep exercises into your routine 1–2 times a week. Allow for adequate recovery between sessions.

Resources

Endomondo.com refrains from utilizing tertiary references. We uphold stringent sourcing criteria and depend on peer-reviewed studies and academic research conducted by medical associations and institutions. For more detailed insights, you can explore further by reading our editorial process.

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