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What is the eccentric joint action for a lateral raise?
In a lateral raise, the eccentric joint action occurs when the arm is lowered back down after reaching the peak of the lift. During this phase, the deltoid muscles lengthen while controlling the descent of the weights, which helps to maintain tension and stability. This eccentric action is crucial for muscle development and injury prevention, as it promotes controlled movement and strength throughout the full range of motion.
What muscle lengthens during movement?
During movement, the muscle that lengthens is typically the antagonist muscle, which opposes the action of the primary mover (agonist). For example, when you extend your arm, the biceps (agonist) contracts while the triceps (antagonist) lengthens. This lengthening allows for controlled movement and stabilization of the joint involved. This process is known as eccentric contraction.
What joint do you use during a bicep curl up phase?
During the up phase of a bicep curl, the primary joint used is the elbow joint. As you lift the weight, the biceps brachii muscle contracts and causes flexion at the elbow, allowing the forearm to move closer to the upper arm. This action primarily targets the biceps while also engaging the forearm muscles.
What joint actions occurring in a lateral raise during the concentric and eccentric phase?
To see eccentric contraction, look at the biceps curl with flexion around the elbow. As you lower a weight, you are working against resistance, letting the joint angle increase to lower that object under your control.The opposite is the concentric contraction were the arm is flexed upward to decrease the angle at the elbow.
Which joint are the biceps working with in the body?
The joints that the biceps are working with are the elbow joint and the shoulder joint.
What is the joint action in the eccentric phase lateral raise?
In the eccentric phase of a lateral raise, the primary joint action occurs at the shoulder joint, specifically involving shoulder abduction. During this phase, the deltoid muscles, particularly the middle deltoid, control the lowering of the arms back to the starting position. The eccentric contraction helps to maintain tension in the muscles while they lengthen, promoting stability and muscle growth. Additionally, the scapulae may also move slightly to assist in the controlled descent of the arms.
What is the eccentric joint action for lateral raise?
The eccentric joint action during a lateral raise occurs when the deltoid muscles lengthen while controlling the descent of the weights after reaching the peak height of the lift. As you lower the weights back to the starting position, the muscles are under tension, which helps to promote strength and muscle growth. This phase is crucial for muscle development, as it emphasizes control and stability throughout the motion. Overall, the eccentric action aids in preventing injury and improving overall muscle function.
What are the antagonist of the elbow and radioulnar joints?
The antagonist muscles of the elbow joint are the biceps brachii and brachialis, which oppose the action of the triceps brachii. In the radioulnar joint, the supinator and biceps brachii act as antagonists to the pronator teres and pronator quadratus muscles.
When you bend your arms what muscle is the flexor?
Probably the Biceps Brachii (commonly called Biceps).
What are different types of contraction in sport?
The different types of contraction in sport is; Concentric Eccentric you also have to include; joint action e.g. Extension / flexion the agonist / agonistic muscle pairs e.g. hamstrings, quadriceps, biceps, triceps ect. & the joint itself e.g. knee, elbow, shoulder,
What are two muscles that are synergists with the biceps femoris muscle?
The semitendinosus and the semimembranosus muscles assist the biceps femoris in the action of flexing the knee joint. The semitendinosus and the semimembranosusmuscles also work together to perform extension of the hip joint.
What are the muscles that move the joint?
biceps and triceps
