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Posterior Chain
The posterior chain is a group of muscles on the posterior of the body. Examples of these muscles include the hamstrings, the gluteus maximus, erector spinae muscle group, trapezius, and posterior deltoids. Exercises The primary exercises for developing the posterior chain are the Olympic lifts, squats, good-mornings, bent-over rows, deadlift The deadlift is a strength training exercise in which a weight-loaded barbell is lifted off the ground to the level of the hips, with the torso perpendicular to the floor, before being placed back on the ground. It is one of the three powerlifting ...s, pull-ups and hyperextensions. The common denominator among many of these movements is a focus on hip extension, excluding bent-over rows and pull ups. Working on hamstrings is also important. References Muscular system {{muscle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamstrings
A hamstring () is any one of the three posterior thigh muscles in human anatomy between the hip and the knee: from anatomical_terms_of_location#Medial_and_lateral, medial to anatomical_terms_of_location#Medial_and_lateral, lateral, the semimembranosus, semitendinosus and biceps femoris. Etymology The word "ham" is derived from the Old English “ham” or “hom” meaning the hollow or bend of the knee, from a Germanic base where it meant "crooked". It gained the meaning of the leg of an animal around the 15th century. ''String'' refers to tendons, and thus the hamstrings' string-like tendons felt on either side of the back of the knee. Criteria The common criteria of any hamstring muscles are: # Muscles should originate from ischial tuberosity. # Muscles should be inserted over the knee joint, in the tibia or in the fibula. # Muscles will be innervated by the tibial nerve, tibial branch of the sciatic nerve. # Muscle will participate in flexion of the knee joint and extension ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gluteus Maximus
The gluteus maximus is the main extensor muscle of the hip in humans. It is the largest and outermost of the three gluteal muscles and makes up a large part of the shape and appearance of each side of the hips. It is the single largest muscle in the human body. Its thick fleshy mass, in a quadrilateral shape, forms the prominence of the buttocks. The other gluteal muscles are the medius and minimus, and sometimes informally these are collectively referred to as the glutes. Its large size is one of the most characteristic features of the muscular system in humans,Norman Eizenberg et al., ''General Anatomy: Principles and Applications'' (2008), p. 17. connected as it is with the power of maintaining the trunk in the erect posture. Other primates have much flatter hips and cannot sustain standing erectly. The muscle is made up of muscle fascicles lying parallel with one another, and are collected together into larger bundles separated by fibrous septa. Structure The gluteus maxi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erector Spinae
The erector spinae ( ) or spinal erectors is a set of muscles that straighten and rotate the back. The spinal erectors work together with the glutes (gluteus maximus, gluteus medius and gluteus minimus) to maintain stable posture standing or sitting. Structure The erector spinae is not just one muscle, but a group of muscles and tendons which run more or less the length of the spine on the left and the right, from the sacrum, or sacral region, and hips to the base of the skull. They are also known as the sacrospinalis group of muscles. These muscles lie on either side of the spinous processes of the vertebrae and extend throughout the lumbar, thoracic, and cervical regions. The erector spinae is covered in the lumbar and thoracic regions by the thoracolumbar fascia, and in the cervical region by the nuchal ligament. This large muscular and tendinous mass varies in size and structure at different parts of the vertebral column. In the sacral region, it is narrow and pointed, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trapezius
The trapezius is a large paired trapezoid-shaped surface muscle that extends longitudinally from the occipital bone to the lower thoracic vertebrae of the human spine, spine and laterally to the spine of the scapula. It moves the scapula and supports the arm. The trapezius has three functional parts: * an upper (descending) part which supports the weight of the arm; * a middle region (transverse), which retracts the scapula; and * a lower (ascending) part which medially rotates and depresses the scapula. Name and history The trapezius muscle resembles a trapezoid, trapezium, also known as a trapezoid, or diamond-shaped quadrilateral. The word "spinotrapezius" refers to the human trapezius, although it is not commonly used in modern texts. In other mammals, it refers to a portion of the analogous muscle. Structure The ''superior'' or ''upper'' (or descending) fibers of the trapezius originate from the spinous process of C7, the external occipital protuberance, the me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deltoids
The deltoid muscle is the muscle forming the rounded contour of the human shoulder. It is also known as the 'common shoulder muscle', particularly in other animals such as the domestic cat. Anatomically, the deltoid muscle is made up of three distinct sets of muscle fibers, namely the # anterior or clavicular part (pars clavicularis) ( More commonly known as the front delt.) # posterior or scapular part (pars scapularis) ( More commonly known as the rear delt.) # intermediate or acromial part (pars acromialis) ( More commonly known as the side delt) The deltoid's fibres are pennate muscle. However, electromyography suggests that it consists of at least seven groups that can be independently coordinated by the nervous system. It was previously called the deltoideus (plural ''deltoidei'') and the name is still used by some anatomists. It is called so because it is in the shape of the Greek capital letter delta (Δ). Deltoid is also further shortened in slang as "delt". A study of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olympic Weightlifting
Weightlifting (often known as Olympic weightlifting) is a competitive strength athletics, strength sport in which athletes compete in lifting a barbell loaded with weight plates from the ground to overhead, with the aim of successfully lifting the heaviest weights. Athletes compete in two specific ways of lifting the barbell overhead. The ''Snatch (weightlifting), snatch'' is a wide-grip lift, in which the weighted barbell is lifted overhead in one motion. The ''clean and jerk'' is a combination lift, in which the weight is first taken from the ground to the front of the shoulders (the ''clean''), and then from the shoulders to over the head (the ''jerk''). The sport formerly included a third lift/event known as clean and press. Each weightlifter gets three attempts at both the snatch and the clean and jerk, with the snatch attempted first. An athlete's score is the combined total of the highest successfully-lifted weight in kilograms for each lift. Athletes compete in various we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squat (exercise)
A squat is a strength exercise in which the trainee lowers their hips from a standing position and then stands back up. During the descent, the hip and knee joints flexion, flex while the ankle joint dorsiflexion, dorsiflexes; conversely the hip and knee joints extension (anatomy), extend and the ankle joint plantarflexion, plantarflexes when standing up. Squats are considered a vital exercise for increasing the strength and Muscle hypertrophy, size of the lower body muscles as well as developing core stability, core strength. The primary Anatomical terms of muscle#Agonist, agonist muscles used during the squat are the quadriceps femoris, the adductor magnus, and the gluteus maximus. The squat also Isometric exercise, isometrically uses the erector spinae and the rectus abdominis muscle, abdominal muscles, among others. The squat is one of the three lifts in the strength sport of powerlifting, together with the deadlift and the bench press. It is also considered a staple exerc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Good-morning
The good-morning is a weight training exercise. It is known as a good-morning because of the movement in the erector spinae which resembles the bow that traditionally begins a schoolday in some East-Asian countries. The erector spinae muscles of the lower back work isometrically to keep the spine in an extended position while the hamstrings and gluteus maximus work isotonically to perform hip extension. Other muscles are involved in stabilizing weight on the back and maintaining balance. The degree of knee bend used will change the focus. The straighter the knees, the more the hamstrings are stretched and stressed by the movement and this stretch involves them more as the hip extensors. Bent knees can shift the weight forward, which allows the pelvis to drift back further as the body hinges in hip flexion. Importance The good-morning is an essential exercise in the Westside Barbell method and is often trained to near limit maxima. Developing strength in the lift aids in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deadlift
The deadlift is a strength training exercise in which a weight-loaded barbell is lifted off the ground to the level of the hips, with the torso perpendicular to the floor, before being placed back on the ground. It is one of the three powerlifting movements along with the Squat (exercise), squat and bench press, as well as a quintessential lift in strongman. The all-time world record deadlift stands at , achieved by Iceland's Hafþór Júlíus Björnsson. Two styles of deadlift are commonly used in competition settings: the conventional deadlift and the sumo deadlift. While both of these styles are permitted under the rules of powerlifting, only the conventional stance is permitted in strongman. Execution Form The conventional deadlift can be broken down into three phases: the setup, the initial pull or drive, and the lockout. Setup: When performing a deadlift, a lifter sets in a position that eccentrically loads the gluteus maximus, gluteus minimus, trapezius, biceps femoris, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pull-up (exercise)
A pull-up is an upper-body strength exercise. The pull-up is a Closed kinetic chain exercises, closed-chain movement where the body is suspended by the hands, gripping a bar or other implement at a distance typically wider than shoulder-width, and pulled up. As this happens, the elbows flexion, flex and the shoulders adduction, adduct and extension (anatomy), extend to bring the elbows to the torso. Pull-ups build up several muscles of the upper body, including the Latissimus dorsi muscle, latissimus dorsi, trapezius, and biceps brachii. A pull-up may be performed with overhand (pronated), underhand (supinated)—sometimes referred to as a chin-up—neutral, or rotating hand position. Pull-ups are used by some organizations as a component of fitness tests, and as a conditioning activity for some sports. Movement Beginning by hanging from the bar, the body is pulled up vertically. From the top position, the participant lowers their body until the arms and shoulders are fully ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperextension (exercise)
A back extension is an exercise that works the lower back as well as the mid and upper back, specifically the erector spinae muscles. There are two erector spinae, one on either side of the spine, that run along its length. These are formed of three smaller muscles – spinalis, longissimus, and iliocostalis. Hyperextension as a misnomer The name hyperextension is commonly used for back extension exercises that are done using a hyperextension bench in a fitness gym. However the name 'hyperextensions' is a misnomer, because hyperextension means a movement where Anatomical terms of motion, extension is performed at any joint beyond its normal range of motion. Instead, what one is trying to achieve in the ''back extension'' exercise is only to extend the spine within its normal range and not beyond its normal range of motion. When you extend the back from the flexed position, at the end range, your head and neck stays in neutral position. In fact, back extension beyond the norm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
