Neural drive to muscles is altered in pain, but this depends on task type. Acute experimental pain reduces the discharge rate of many active motor units during gentle isometric contractions,12,51,54 but this is less pronounced in position- than force-control tasks.44 Even when tasks are identical in mechanical requirements and muscle torques, neuromotor control during position- and force-control tasks differs. Task-specific differences at the spinal cord and descending inputs are thought to explain this difference.
from The Journal of Pain https://ift.tt/2zc73Ot
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