Dominic Stone
The rear deltoids, also known as posterior deltoids, are shoulder muscles that start from the spine of the shoulder blade and connect to the upper arm bone, or humerus. They are responsible for extending and externally rotating the arm, working alongside the infraspinatus and teres minor muscles of the rotator cuff. These muscles are essential for smooth and efficient shoulder movement. The rear delts can be targeted through various exercises, such as the quadruped rear delt raise, side-lying rear delt raise, cable rear delt row, and reverse dumbbell fly.
| Characteristics | Values |
|---|---|
| Location | The rear deltoids are muscles in the back of the shoulders |
| Shape | Upside-down triangle |
| Function | Shoulder stabilisation, extension and external rotation of the arm |
| Connection | The base of the rear deltoids connects to the upper part of the scapula (shoulder blade) and the side of the clavicle (collarbone). The point of the deltoids attaches to the side of the humerus (upper arm bone). |
| Weight | A study of 30 shoulders found an average mass of 192 grams, ranging from 84 grams to 366 grams. |
| Exercises | Quadruped rear delt raise, side-lying rear delt raise, cuff pivot, reverse fly, pull-apart, cable rear delt row, reverse dumbbell fly, barbell row, face pulls, pullups from a deadhang, wide grip rows |
Explore related products
What You'll Learn
Rear delts are shoulder muscles
The rear deltoids, or posterior deltoids, are indeed shoulder muscles. They are located at the back of the shoulders and are responsible for extending and externally rotating the arm. They are important for smooth and efficient shoulder movement and help to stabilise the shoulder joint.
The deltoid muscle as a whole forms the rounded contour of the human shoulder. It is made up of three distinct sets of muscle fibres, with the posterior deltoid being the rear deltoid. This is also known as the scapular part of the deltoid, as it arises from the scapula (shoulder blade). The base of the deltoids connects to the upper part of the scapula and the side of the clavicle (collarbone). The deltoid muscle is superficial, meaning it is close to the surface of the skin, and it is shaped like an upside-down triangle.
The rear deltoids are important for shoulder stabilisation and are used in many pulling movements. They can be targeted through exercises such as the quadruped rear delt raise, side-lying rear delt raise, cuff pivot, reverse fly, and pull-apart. These exercises can help to strengthen the rear deltoids and improve shoulder stability.
It is important to maintain proper form when performing these exercises to avoid potential injuries. Additionally, consulting a qualified professional before beginning a new exercise routine is always recommended. By training the rear deltoids, individuals can improve their shoulder stability, mobility, and overall strength.
Kali Muscle's Wealth: Secrets to His Success
You may want to see also
Explore related products
They help with shoulder movement
The rear deltoids, or posterior deltoids, are the muscles in the back of the shoulders. They are responsible for arm extension and external rotation. They are essential for efficient shoulder movement and posture, supporting the muscles in the back.
The rear delts help with shoulder movement by aiding in pulling movements and providing stability. They are important shoulder stabilizers and help to keep the shoulders pulled back, promoting better posture. They also help to lift the arm in a lateral raise and prevent shoulder rotation during a bench press.
Exercises that target the rear delts include pulling or rowing movements, such as face pulls, band pull-aparts, and dead hangs. Other exercises include the quadruped rear delt raise, side-lying rear delt raise, cuff pivot, reverse fly, and pull-apart.
The rear delts are often undertrained, as their close counterparts, the front and middle delts, usually take precedence. However, it is important to train the rear delts to promote healthy shoulder mobility and stability.
Muscle Tissue and Glucose Storage: What's the Link?
You may want to see also
Explore related products
They are used in pulling movements
The rear deltoids are the muscles on the back of your shoulders. They are one of three segments of the shoulder muscles, the other two being the front and side deltoids. They originate from the spine of the shoulder blade and connect to the upper arm bone, or humerus.
The primary function of the rear deltoids is shoulder extension, and they are used in many pulling movements. They work with the scapula, traps, and muscles of the upper back to pull your shoulders back. They are key movers in the majority of 'pulling' movements, including all forms of rows. For example, they are used when pulling a lawn mower cord or when you pitch a baseball.
In pulling and rowing movements, strong rear delts help your lats pull your upper arm back. The rear delt is a synergist to your lat muscle in movements where you pull your arm back, and a synergist to your rotator cuff in external shoulder rotation. The rear delt row is one of the best exercises for the rear deltoids. In this exercise, you pull with your upper arms straight out to your sides, like a T-shape.
The face pull is another classic rear delt exercise. In this exercise, you keep your elbows high and rotate your arms up so that you pull the cable toward your face. This works the pulling and external rotation functions of the rear delts.
The Intriguing Link Between Trapizes and Genetics
You may want to see also
Explore related products
They can be targeted with exercises
The rear deltoids, or posterior deltoids, are important shoulder muscles that help with shoulder extension and pulling movements. They are also important for maintaining an upright posture and preventing slouching. These muscles can be targeted with specific exercises to strengthen them and improve shoulder stability.
One effective exercise for targeting the rear deltoids is the quadruped rear delt raise. This exercise can be performed anywhere and does not require any special equipment. To do this exercise, start on all fours with your knees and hands shoulder-width apart. Keep your spine in a neutral position and engage your core. Raise one arm out to the side, parallel to the ground, and hold for a moment before returning to the starting position. Repeat this movement with the opposite arm.
Another exercise that targets the rear deltoids is the side-lying rear delt raise. This exercise requires the use of a dumbbell. Lie on your side with your head resting on your arm and your feet stacked on top of each other. Hold the dumbbell in your hand and slowly raise it until it is stacked over your shoulder. Control and slowly lower the weight back to the starting position.
Additionally, resistance band exercises are a great way to build strength and flexibility in the rear deltoids and rotator cuffs. You can also use a cable machine with a double-handled rope attachment to perform exercises that target the rear deltoids. Stand with your feet hip-width apart, facing the machine, and pull the ropes toward you while pulling them apart. This movement helps to isolate the rear deltoids and build strength.
For those with access to a gym or weights, there are additional exercises that can be performed to target the rear delts. One such exercise involves using a pair of dumbbells or a barbell. Stand tall while holding the weight at your waist and then hinge forward slightly before standing back up and pulling the weight up towards your chin. Slowly lower the weight back down to your waist under control. This movement targets the rear delts and helps build strength.
By incorporating these exercises into a regular workout routine, individuals can effectively target and strengthen their rear deltoids, improving shoulder stability and overall posture.
Neck Muscle Lumps: When to Worry?
You may want to see also
Explore related products
They are important for shoulder stability
The rear deltoids are muscles at the back of the shoulders. They are important for shoulder stability and help with many pulling movements. They are also important for shoulder extension, working alongside the scapula, traps and muscles of the upper back to pull the shoulders back.
The rear delts play a key role in supporting the other upper body muscles. They help lift the arm in a lateral raise, prevent shoulder rotation during a bench press, and provide stability during pull-ups. They are also important ''postural'' muscles, helping to keep the torso upright and prevent slouching. This is important in day-to-day life and in pursuits such as running, where maintaining a strong, upright torso can help conserve energy.
The rear delts are one of the most undertrained muscles in the body. They make up one-third of the shoulder muscle heads, but their close counterparts, the front and mid delts, usually take precedence. However, it is important to give equal attention to all three parts of the shoulder (front, side, and rear delts) for well-rounded shoulders.
The rear delts can be targeted through exercises such as the quadruped rear delt raise, side-lying rear delt raise, reverse fly, and barbell row. These exercises can help build size and strength in the rear delts, leading to more stable and durable shoulders.
Understanding Muscle Spasms: Causes and Treatment Options
You may want to see also
Frequently asked questions
The rear delt muscle, or posterior deltoid, is the back part of your shoulder muscle.
The rear delt muscle aids in pulling movements and is an important shoulder stabilizer. It helps extend your shoulder and externally rotates it.
There are many exercises that can strengthen the rear delt muscle, including the barbell row, cable rear delt row, and reverse dumbbell fly.
![Medical-Grade Work Back Brace with Adjustable Shoulder Straps [Stronger Support & Breathable Mesh] Lower Back Support Belt for Men Women - Pain Relief for Lifting, Warehouse, Construction & Moving](https://m.media-amazon.com/images/I/71yJ8hSbnxL._AC_UL320_.jpg)
