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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.
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.
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.
Agonist is muscarine and antagonist is atropine.
Agonist
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
agonist : trapizius antagonist: latissimus dorsi
The agonists are the muscles that help you to do this exercise. The antagonists are the muscles that bring you back to a regular position instead of being stuck.