[Age Peculiarities of Formation of Spinal Inhibition of Skeletal Muscle in Males]

Age peculiarities of spinal inhibition in males in the relative muscular rest condition were studied. The main stages of development and formation processes of spinal inhibition in males, and set periods of weakening and increasing during ontogeny. It's shown, that the development and formation of different types of spinal inhibition in the period from 9 to 18 years there heterochronically and definitive level of their development are on a different age: presynaptic inhibition of heteronymous Ia afferent and reciprocal inhibition homonymous α-motoreurons in the age of 9-12 years, recurrent inhibition of heteronymous α-motorneurons--17-18 years, and nonreciprocal inhibition of heteronymous and homonymous α-motorneurons--14-15 years. Teenage age is a critical period in the development of presynaptic inhibition heteronymous and homonymous Ia afferents, recurrent inhibition α-motorneurons. Discusses the physiological mechanisms underlying the observed age-specific patterns.