Dominic Stone
When it comes to swimming, speed depends on the ability to generate propulsion while minimising frontal drag forces. Two muscle groups that stand out as potentially causing more drag than propulsion are the biceps and pectoralis major muscles. However, there is another muscle group that is essential for swimmers to consider when training: the trapezius muscles. These are two large muscles found in the upper back, which help with posture, head, neck and upper back movement, and shoulder movements.
| Characteristics | Values |
|---|---|
| Number of trapezius muscles | 2 |
| Location | Upper back |
| Shape | Trapezoid |
| Function | Maintain and adjust posture, move head, neck, and upper back |
| Sections | Upper, middle, and lower |
Explore related products
What You'll Learn
- The trapezius muscle is used to move the head, neck, and upper back
- The biceps muscle can cause more frontal drag than propulsion in swimmers
- The pectoralis major muscle adds girth to a swimmer's body, resulting in more drag
- The trapezius muscle is the only muscle in the upper limb that doesn't receive innervation from the brachial plexus
- The trapezius muscle has three sections: upper, middle, and lower
The trapezius muscle is used to move the head, neck, and upper back
The trapezius muscle is a large, triangular, paired muscle located on the posterior aspect of the neck and thorax. The muscle gets its name from the trapezoid shape it forms when viewed together. The trapezius muscle is involved in several movements of the head, neck, and upper back.
The trapezius muscle has three sections: the upper, middle, and lower sections. These sections run from the base of the neck, across the shoulders, and down to the middle of the back. The upper and middle sections are involved in movements of the head and neck, while the lower section is involved in movements of the shoulder girdle.
The trapezius muscle is responsible for various motions, including turning the head to either side, maintaining and adjusting posture, twisting the torso, shrugging the shoulders, and moving the shoulders during arm movements. The muscle helps to push the shoulder blade (scapula) during these movements.
The trapezius muscle is also involved in unilateral and bilateral contractions, which result in lateral flexion and rotation of the head and neck, respectively. The bilateral contraction of the descending part of the trapezius causes an extension of the head and neck. The ascending (lower) fibres of the trapezius are responsible for lowering the shoulder, which is important for activities where the shoulders are lowered against resistance, such as using the hands to get up from a seated position.
The trapezius muscle is one of the most superficial extrinsic back muscles and plays a crucial role in supporting and moving the head, neck, and upper back. It is important to maintain flexibility and strength in the trapezius muscle to avoid strains and injuries, which can cause pain and limit movement.
Magnesium: Muscle Relaxant and Spasms Solution
You may want to see also
Explore related products
The biceps muscle can cause more frontal drag than propulsion in swimmers
Swimming speed depends on the ability to generate propulsion from both the pull and the kick while minimising frontal drag forces. The biceps muscle can cause more frontal drag than propulsion in swimmers due to two main reasons. Firstly, the biceps muscle is not as important as other muscles in the biomechanics of the high-elbow pulling motion. The high-elbow pulling motion relies more on the muscles of the shoulder and upper back, such as the trapezius muscles. Secondly, if the biceps muscle is overly developed, it can increase frontal drag. This is because the biceps muscle gets in the way as the arm moves through the water, trying to generate propulsion. The bigger the object and the faster it moves, the more drag it causes. Therefore, a larger biceps muscle can add more girth to a swimmer's body, resulting in increased frontal drag.
To swim fast, it is essential to build swim-specific strength without disproportionately increasing frontal drag forces. This involves focusing on exercises that target the muscles critical to swimming biomechanics, such as the trapezius, rather than those that contribute more to drag, like the biceps. By prioritising the development of the appropriate muscle groups, swimmers can optimise their performance and minimise frontal drag.
Additionally, the pulling motion of the arm plays a significant role in frontal drag. During the pulling motion, it is the upper arm that causes the most frontal drag force, as it moves forward longer and faster than the rest of the arm. This understanding of the relationship between body shape and drag forces is crucial in designing effective swimming techniques and strength training programs.
Furthermore, it is worth noting that certain swimming strokes and events may allow for more girth and propulsion. For example, swimmers specialising in the 50-meter event can have more substantial physiques as they can generate the necessary propulsion to compensate for the increased frontal drag. However, for longer events, the accumulation of lactic acid becomes a more significant factor, influencing the trade-off between power and drag.
Muscle Recovery: Healing Injured Muscles
You may want to see also
Explore related products
The pectoralis major muscle adds girth to a swimmer's body, resulting in more drag
Swimming is a low-impact sport that works most of the muscles in the body. It is a full-body workout that helps build strength and flexibility. However, certain muscles are more important than others for swimmers, and some muscles can even hinder performance if they are too developed. One such muscle is the pectoralis major.
The pectoralis major muscle, or "pecs", is a large chest muscle. It is used in freestyle and breaststroke strokes to stabilize the swimmer's movements. While this muscle is important for swimmers, if it is overly developed, it can add girth to a swimmer's body, resulting in more drag. This is because the pectoralis major muscle is not crucial to the biomechanics of the high-elbow pulling motion. Instead, the upper arm, which creates the most frontal drag force, is responsible for most of the pulling motion.
Therefore, swimmers should be cautious about performing exercises that target the pectoralis major muscle, such as bench presses. While these exercises can build strength, they may inadvertently slow the swimmer down by increasing drag. This is especially true for swimmers who compete in freestyle, backstroke, and butterfly strokes, where the pulling motion is essential.
Instead, swimmers should focus on building strength in other muscle groups that contribute more to propulsion than drag. These include the core abdominal and lower back muscles, which help keep the body steady and streamlined in the water. Additionally, swimmers can target the deltoid and shoulder muscles, which aid in reaching forward and entering the water with proper technique. By focusing on these muscle groups, swimmers can improve their propulsion while minimizing frontal drag forces.
In summary, while the pectoralis major muscle is important for stabilization in certain swimming strokes, its overdevelopment can lead to increased drag. Swimmers should therefore be mindful of their training routines and focus on exercises that enhance performance without disproportionately increasing drag.
Keratin's Role in Muscles: What You Need to Know
You may want to see also
Explore related products
The trapezius muscle is the only muscle in the upper limb that doesn't receive innervation from the brachial plexus
The trapezius muscles are two large muscles in the upper back. They are commonly referred to as 'traps' or 'trap muscles'. Each trapezius muscle has three sections: upper, middle, and lower. These muscles help with various motions, including turning the head to either side, adjusting posture, twisting the torso, shrugging the shoulders, and moving the shoulder when lifting the arm or throwing something.
The trapezius muscle is considered a muscle of the upper limb rather than the back. Despite this, it is the only muscle in the upper limb that does not receive innervation from the brachial plexus. Instead, the trapezius muscle is innervated by the spinal accessory nerve (CN XI) and the anterior rami of the C3 and C4 spinal nerves. The brachial plexus is a network of nerves that originate from the spine in the neck and upper back and supply the arms and hands. It controls the movement and sensation of the shoulder, arm, and hand.
The SCA usually has an ascending and descending branch, and it lies deep to the trapezius muscle and superficial to the levator scapulae and rhomboids. The arterial supply to the trapezius varies depending on its level. The descending (upper) part of the muscle is supplied by the occipital artery, the transverse (middle) part by the superficial cervical artery, and the ascending (lower) part by the muscular branches of the dorsal scapular artery.
The trapezius muscle is a large, triangular, paired muscle located on the posterior aspect of the neck and thorax. When viewed together, the pair forms a diamond or trapezoid shape. The trapezius has many attachment points, extending from the skull and vertebral column to the shoulder girdle. The main function of the trapezius is to stabilize the scapula in its anatomical place and control it during movements of the shoulder and upper limb.
Muscle Men and Gay Stereotypes: Exploring the Truth
You may want to see also
Explore related products
The trapezius muscle has three sections: upper, middle, and lower
The trapezius muscle, commonly referred to as the "trap muscle", is a large muscle in the upper back. Each side of the body has one trapezius muscle, and together they form a trapezoid shape with four sides, two of which are parallel. These muscles help with various motions, including turning the head from side to side, adjusting posture, twisting the torso, shrugging the shoulders, and moving the shoulder when lifting the arm or throwing something.
The middle trapezius fibres originate from the spinous processes of T1-T4 vertebrae and their intervening supraspinous ligaments. These fibres are directed horizontally and run laterally towards the shoulder. Thus, the middle fibres represent the transverse part of the trapezius. The transverse fibres act together with the rhomboids to produce a retraction of the scapula by pulling it towards the midline.
The lower trapezius fibres, also known as the ascending fibres, originate from the spinous processes of the T4-T12 vertebrae and their respective supraspinous ligaments. These fibres are responsible for the depression of the medial part of the scapula, thus lowering the shoulder.
Muscle Adhesions: Understanding the Reality of This Painful Condition
You may want to see also
