Rear Delt Fly Machine

Master the rear delt fly machine to achieve balanced shoulder development and enhance your overall upper body strength. This exercise specifically targets the rear deltoid muscles, which are often neglected in traditional shoulder workouts.

This guide will explain the correct setup and execution to get the most out of using the machine.  We will highlight common mistakes to avoid and take you through the proper techniques to adopt. Learning good form is crucial to avoid injury and maximize benefits. Whether you're a gym novice or a seasoned athlete, these tips will help you enhance your shoulder workouts effectively.

How To Do

  1. Adjust the seat height so that your shoulders are level with the handles.
  2. Set your weight and handlebars. Ensure the handlebars are set in the forward position, allowing you to reach them comfortably when seated.
  3. Sit with your back straight, facing the machine. Your chest should press against the pad with both feet flat on the floor. Grasp the handles with an overhand (palms facing down) or neutral (thumbs up) grip.
  4. Engage your core with a slight bend in your elbows. Slowly pull the handles outward and backward. Focus on engaging your rear deltoid muscles. Exhale as you pull the handles back.
  5. Pause briefly at the peak of the movement, ensuring a full contraction of the rear delts.
  6. Slowly return to the starting position, controlling the weight as it moves back. Inhale as you return to the starting position.

Tips From Expert

  • Do not grip the handles tightly. You will end up engaging other muscles in your shoulders and rely on them to complete the movement. Instead, grip the handles lightly and focus on working your rear delts.
  • Maintain chest contact with the pad throughout the exercise and keep your back straight to avoid poor form.
  • Try not to shrug your shoulders. This will engage upper back and shoulder muscles, which are not the focus of this particular exercise.      
  • Maintain control throughout the movement, and don’t pull too far back. This can overly engage the shoulder blades, which are primarily controlled by different muscles in your back.

Optimal Sets and Reps

Your ideal sets and reps will depend on your goals. See below for common training goals.

Training Type Sets Reps
Strength Training 3–5 4–6
Hypertrophy 3–4 8–12
Endurance Training 3–4 15–20
Power Training 3–5 1–3
Optimal Sets & Reps of Rear Delt Fly Machine

How to Put in Your Workout Split

By programming the rear delt fly machine into your split, you can ensure balanced shoulder development, improved posture, and upper body strength.

  • Push/Pull/Legs Split — Include the rear delt fly machine on pull days. This allows you to target your rear delts along with other upper back exercises and your biceps. Do it towards the end of your pull workout, after compound movements like rows and pull-ups.
  • Upper/Lower Split — Add the rear delt fly machine to your upper body days along with other rear delt exercises. This ensures comprehensive shoulder training. Position it after your primary shoulder presses and before isolation exercises for the biceps and triceps.
  • Full Body Split —​​ Integrate the rear delt fly machine 2—3 times per week. Place it towards the end of your workout to avoid fatigue impacting larger muscle group exercises.
  • Shoulder/Arm Day — For your dedicated shoulder or arm day, the rear delt fly machine is a must. It fits perfectly after this shoulder machine workout but before tricep exercises. This ensures your rear delts are adequately targeted.

To load the exercise and meet your training goals, use your 1RM. This is the maximal amount of weight you can lift for one repetition.

  • For strength training and powerlifting, use 80%–100% of your 1RM. Allow two to three minutes of rest between sets for both.
  • For hypertrophy gains, use 60%–80% of your 1RM.
  • For endurance training, use 50%–60% of your 1RM. Make sure you get 45–90 seconds of rest between sets for hypertrophy and endurance training.

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Equipment

Fly Machine

Fly Machine

This machine provides an excellent way for you to strengthen your chest muscles without worrying about balance. Ensure you perform the movement in a controlled manner.

Who Should Do?

Athletes

This exercise is invaluable for ‘overhead’ athletes engaged in sports such as swimming and tennis. Shoulder muscle imbalances in this population can lead to shoulder impingement syndromes, which are painful and limit athletic ability.

Benefits include increased power and endurance in their shoulders, as well as improved posture. This exercise counteracts the forward shoulder posture that can result from repetitive movements. By incorporating this exercise into their training regimen, athletes can achieve greater muscular symmetry and enhanced functional performance.

Office Workers

Office workers often spend long hours sitting, leading to poor posture and rounded shoulders. This exercise helps to counteract the effects of prolonged sitting by strengthening the upper back and shoulder muscles.

Improved strength of postural muscles can reduce issues such as neck and shoulder pain. By adding the rear delt fly machine to their fitness routine, office workers can enhance shoulder stability and maintain better postural alignment. 

Older People

As we age, muscle mass and strength decline, leading to reduced functional capacity and increased risk of injuries. Targeting the posterior deltoids can help counteract the forward shoulder posture commonly seen in older adults. This promotes better alignment, reducing strain on the neck and upper back.

Additionally, strengthening the posterior delts enhances overall shoulder mobility and stability. This is important for daily activities such as lifting, reaching, and maintaining balance. Regular strengthening of postural muscles can contribute to a better quality of life and greater independence for older adults.

Who Should Not Do?

People With Acute Shoulder Injuries

People with acute shoulder injuries may need to avoid this exercise, as it can place significant stress on the joint. Without proper healing, it could potentially lead to further damage, inflammation, and prolonged recovery times.

For instance, shoulder impingements may require a rehab program to first stabilize the shoulder blade in a neutral position. Without stabilizing the shoulder blade, attempting targeted strength training with the arms abducted, a less stable position, could exacerbate the injury.

People With Limited Shoulder Mobility

People with limited shoulder mobility should avoid the rear delt fly machine if it causes them pain or discomfort. The exercise requires a functional range of motion to perform it safely with the proper technique. Insufficient mobility can lead to improper form, increasing the risk of strain or injury to the shoulder joints and surrounding muscles.

For example, in the early stages of a frozen shoulder, there are high pain levels and insufficient movement to use the machine safely. Individuals should first work on improving their shoulder flexibility and range of motion through gentle mobility exercises.

Beginners With Poor Form Awareness

Beginners with poor form awareness should avoid the machine because improper technique can increase the risk of injury. This exercise requires precise movement to target the muscles correctly and avoid placing undue stress on the shoulders and upper back.

Without proper form, beginners may overcompensate with other muscles, reducing the exercise’s effectiveness. Novices may benefit from building a foundation of strength and form awareness with simpler exercises under personal trainer guidance. They can then progress to more complex movements like the rear delt fly machine.

Benefits Of The Rear Delt Fly Machine

Targeted Muscle Isolation

By isolating the posterior deltoids, the machine allows for more effective muscle development, improved shoulder stability, and enhanced posture. Targeting helps ensure specific engagement and strengthening. This is often challenging with compound exercises that recruit multiple muscle groups.

This isolation also helps achieve balanced shoulder aesthetics and prevents muscle imbalances that can lead to injuries. The rear delt fly machine is an invaluable tool for anyone aiming to refine their upper body strength and appearance.

Improved Shoulder Stability

Shoulder stability is improved by strengthening the posterior deltoid muscles, which play a role in maintaining balanced shoulder function. Improved shoulder stability reduces the risk of injuries, supports better posture, and enhances performance in various physical activities.

The importance of the deltoid muscles is increased for those with shoulder joint instability. It is tasked with providing extra stabilization. Targeting them with the rear delt fly machine helps create a stronger and more resilient shoulder joint. This leads to well-rounded shoulder strength and stability.

Enhanced Posture

The rear delt fly machine enhances posture by strengthening the posterior deltoid and upper trapezius muscles. Both muscles counteract the forward pull of the chest and anterior shoulders. Regular use of this machine helps correct rounded shoulders and promotes a more upright, balanced posture.

Improved posture not only reduces strain on the neck and upper back but also contributes to a more confident and healthy appearance. Incorporating the rear delt fly machine into a fitness routine can achieve better alignment and posture. This ultimately improves overall musculoskeletal health and reduces the risk of postural-related pain and injuries.

Reduced Risk Of Injury

Strong posterior deltoids and upper trapezius muscles help balance out the shoulder musculature. This can prevent muscle imbalances that can lead to overuse injuries or joint instability.

By targeting and strengthening these muscles specifically, the machine promotes proper shoulder mechanics during everyday activities and athletic movements. This improved muscle balance and stability enhances performance while contributing to long-term joint health.

Frequently Asked Questions

Is the reverse fly machine good for shoulders?

Yes, this exercise targets the posterior deltoid and upper trapezius exercises. Focusing on these muscles adds to the overall strength and stability of the shoulders.

What grip is best for rear delt flys?

The overhanded (palm down) grip is the most effective for activating the targeted posterior deltoid and upper trapezius muscles. The neutral (thumbs up) grip is a preference for some and is also highly effective.

Why do I feel my triceps during rear delt fly?

If your triceps are engaged more than intended, they could be compensating for weak posterior deltoids. Reduce tricep strain by slightly bending your elbows throughout the exercise. Maintain controlled motion and use lighter weights if required to maintain proper form.

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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