Biomechanics of erect posture maintaining (review of equilibrium control models)

Aim: to review the equilibrium control models described in the literature. To reveal the features of study of sagittal and frontal stability in practice. Equilibrium control is studied with the help of computer complex “MBN - Stabilo” designed for detection of abnormalities of postural and locomotive systems. The complex includes a specialized stabilometer deve-loped for recording the projection of the body pressure center on the platform and its deviation over time and within the coordinate system considering the feet positioning of the examined subject relative to the absolute position. Changes of the erect posture are recorded by means of high-speed video shooting system Ultra Motion Pro. The first obtained results include the digital values of movement of the active points and changes of hip joint and ankle joint angles. The authors have also found that the equilibrium control in sagittal plain requires more efforts than in frontal one. The next stage of the research implies that the new data will be obtained on the vertical stability of the body, and the stabilometric data will be compared with temporal and linear characteristics of Ultra Motion necessary for development of the biomechanical method of control.