Type change of bioelectric control of shin, hip and back muscles at the older preschool age during squat performance

The method of the interferential superficial electromyogram based on the Neuro-MVP computer complex of the Neurosoft (Ivanovo) was used to study bioelectric activity patterns of muscles of the shin, hip and back during squat performance by 5-6-year-old children. Dominant types of patterns are defined. It is established that at the age of 5 years the shot-like electromyogram prevails in work of the studied muscular groups, and at six-year age, the single-phase electromyogram predominates. Formation of the established types of bioelectric control of the studied muscular groups is subject to the laws of a heterochronia and heterotropia.