Erector Spinae.....really it's a group of underlying muscles as well, but the erectors are the primary movers
The latissimus dorsi muscle is responsible for adducting the shoulder and causing extension of the shoulder joint. It is a large triangular muscle located in the back that helps with various movements of the shoulder and arm.
Flexion movements of the back involve bending forward, while extension movements involve arching backward. Flexion can help stretch the back muscles and improve flexibility, but excessive flexion can strain the spine. Extension movements help strengthen the back muscles and improve posture, but too much extension can also lead to strain. Balancing both movements is important for overall spinal health and function.
Shoulder extension involves moving the arm backward, increasing the angle between the arm and the body, while shoulder flexion involves moving the arm forward, decreasing the angle. Shoulder extension typically has a greater range of motion compared to flexion. Different muscles are activated during each movement: shoulder extension primarily activates the latissimus dorsi and teres major muscles, while shoulder flexion primarily activates the anterior deltoid and pectoralis major muscles.
Flexion and extension are movements that occur at joints in the body. Flexion decreases the angle between two body parts, while extension increases the angle. Flexion typically decreases the range of motion, while extension increases it. In terms of muscle activation, flexion usually activates muscles on the front side of the body, while extension activates muscles on the back side.
Neck flexion is the movement of bringing the chin towards the chest, while neck extension is the movement of tilting the head back. Flexion can help strengthen the front neck muscles and improve posture, but excessive flexion can strain the neck. Extension can strengthen the back neck muscles and improve range of motion, but too much extension can also lead to strain. Balancing both movements through proper exercise and posture can help maintain the overall health and function of the neck.
Back extension primarily works the muscles in the lower back, specifically the erector spinae muscles.
The back extension exercise strengthens and tones the muscles in your lower back, helping to improve posture and reduce the risk of back pain.
Longissimus Spinalis Semispinalis Iliocostalis, a minor role in extension but a major role in lateral bending and twisting of the spine Multifidius, a stabilizer muscle, plays a minor role in back extension
The movements involved in the flexion of the back include bending forward, while the movements involved in the extension of the back include straightening or arching backward.
The latissimus dorsi muscle is responsible for adducting the shoulder and causing extension of the shoulder joint. It is a large triangular muscle located in the back that helps with various movements of the shoulder and arm.
An MLS (Major Leauge Soccer, USA) extension is a team added to the Leauge. For example, a 2009 extension team was Seattle Sounders, and this year, 2010, it will be Phillidalphia Union
Erector Spinae
The extension of slavery
Shoulder extension is controlled by: Long head of the triceps, the last, and the teres major
There are five muscles worked when doing a triceps extension. The main muscle is, obviously, the triceps. Secondary muscles that are worked are the deltoid, pectorals major, latissimus dorsi, and teres major.
Hip Extension the agonist would be Glutues Maximus
A backshooter is a cowboy who kills someone by shooting them in the back, or, by extension, a treacherous person.