Koaktivierung von Beuger und Strecker

stefaneidelloth edited this page Dec 29, 2018 · 9 revisions
Muscle coactivation occurs when agonist and antagonist (or synergist) muscles surrounding a joint contract simultaneously to provide joint stability.
In order for muscle coactivation to occur, it must inhibit reciprocal innervation, which occurs when a muscle contracts and the synergist muscle relaxes.


During maximal coactivation, the monosynaptic excitatory pathway (Ia) as well as the disynaptic reciprocal inhibitory pathway (Ib) are exposed to spinal inhibition via descending supraspinal pathways. ... The increase in muscle and joint stiffness mainly results from a direct activation from the CNS with the cerebellum playing an important role in switching from reciprocal activation to coactivation


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