Deltoid
in the arm: bicep contracts (agonist) triceps relax (antagonist) in the leg: hamstrings contract (agonist) quadriceps relaxes (antagonist) remember the agonist is the muscle "agonising" to do the work - like pulling the joint.
The two functional characteristics used to classify muscles into classes are agonist and antagonist. Agonist muscles are responsible for causing movement, while antagonist muscles work in opposition to the agonist to help control the movement.
the agonist of the muscle is a motion that contracts the body to move in its opposition the antagonist is the muscle that causes movement of the posterior and anterior terms of the human body.
Rectus abdominis is the prime agonist and the superior and inferior oblique muscles are synergists. Erector spinae is an antagonist including a number of other muscles of the back.
The antagonist for plank exercises are the muscles on the front of the body, particularly the muscles of the hips and abdomen, such as the hip flexors and rectus abdominis. These muscles work in opposition to the muscles engaged during a plank, which are predominantly the muscles of the back, core, and shoulders.
During exercise, agonist and antagonist muscles have complementary roles. The agonist is the muscle primarily responsible for the movement, contracting to produce the desired action. In contrast, the antagonist muscle opposes the action of the agonist, providing balance and stability by controlling the movement and preventing injury. This coordinated interaction allows for smooth and efficient motion.
Agonist
prime movers : muscle that initiate a particular movement synergism : muscles that have the same action of the prime mover antagonist : muscles that come into play to oppose a certain movement
Antagonist: lats Agonist: Abdominals
Antagonist
Agonist works with the muscles, and the antagonist is the muscle working against it in a contraction. i.e. Bicep curl, the agonist is the Biceps brachii and the antagonist muscle is the triceps brachii.The word agonist means "producing an action" - an antagonist opposes that action. In medicine, an agonist binds to a receptor site and causes a response, often imitating the natural body reaction. An antagonist acts against this drug and blocks the response. for examples ramiels small balls and pubic hair