REGULATION OF HUMAN BODY'S POSE AND POSITION UNDER CONDITIONS OF DIRECTIONAL MODIFICATION OF HIS MASSES' GEOMETRY

  • A.N.Laputin Laputin
  • KhmelnitskayaI.V. Khmelnitskaya
  • Yu.D. Gruzin

Abstract

Analysis of special literature shows the majority of authors have studied the interaction between man and support. The keeping of reciprocal balance between separate links takes into account invariable mass geometry within the body[]]. Known mass geometry of the human body changes not only in ontogenesis, but under influence of many other external and internal factors, Authors of this work have proposed to study the peculiarities of the regulation of the human body's position under directional modification of mass geometry during vertical standing and jumping motions. Frequency-amplitude characteristics of the head and pelvis oscillations are studied with sportsmen of high qua1ification. Special hypergravitational overalls [2], with additional masses are formed uniformly on all body links. Piezoelectric inertial sensors were located on the subject's body. The information from the sensors is registered and processed by computer. The data testifies that the modification of masses' geometry causes essential modifications with frequency amplitude parameters on examinees' body. Local increase of mass causes the increase of oscillation amplitude in both the head and pelvis. Meanwhile, the uniform addition of mass onto every separate link causes the stabilization of frequency-amplitude parameters and increases the stability. The body's stability increases the accuracy of shooting for sportsmen training with the hypergravitational overalls.