Compare and contract the two forms of PNF exercise and explain the role of the agonist muscle in these exercises
What will be an ideal response?
Contractâ€"relax (CR) and contractâ€"relax/antagonist contract (CRAC) are the two common types of PNF stretching.
In the contract-relax (CR) stretch technique, you ?rst contract the muscle to be stretched, then relax it. After you
relax the muscle, you slowly stretch it. The CRAC method calls for the same contractâ€"relax routine but then you
contract the antagonist muscle, which is the muscle on the opposite side of the joint. The purpose of contracting the
antagonist muscle is to promote a re?ex relaxation of the muscle to be stretched.
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