When dynamically stretching the muscle, then sensory receptors located in the interior of the nervous system communicate this fact to (thin, blue line, 0) , but the information does not reach the brain, but remains at the level of the spinal cord, which " protecting "before tearing a muscle tightens and shrinks it (thin, red line, 0) . The vigorous stretching, the stronger the contraction. bottom line is that this whole process, at the beginning, we are not aware, and can be controlled, but only to understand its nature will allow us to do it. Otherwise, we are only waiting for the pain.
the way, the whole thing is used in physical activity. The last phase before the throw, versus in the flesh before the spin, or kick based on the stretch reflex, he skillfully exploited gives us about 15-20% more energy, which really is free.
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