SPINE ADAPTIVE ABILITIES UNDER DISTURBING FACTOR IMPACT

Abstract

Objective. To define the range of body axis deviations outside of which a postural imbalance is determined.

Materials and methods. Static constituents in 25 individuals without spine pathology and pain syndrome in the previous history were studied according to data of computer optical topography and electromyography. Artificial disturbing factor in the form of the oblique pelvis was created at the expense of gradual extremity lengthening. For this purpose discrete supports with a step of 1 cm were placed in turn under each leg.

Results. Body axis oscillations with supports of 1 cm and 2 cm did not differ reliably from those without support, oscillations of interferential curve amplitude preserved their sinusoidal character with period enlargement, in other words this disturbing factor was compensated by the adaptive abilities of the organism. Body axis oscillations with a support of 3 cm reliably differed from those without support: in frontal and horizontal planes when body weight transferred to both legs and in sagittal plane when body weight transferred to the right leg.

Conclusion. Support of 2 cm is a maximum allowable disturbing factor, which organism can eliminate independently. This functional load can help to reveal in due time a latent deficiency of compensating mechanism and to organise correct treatment-and-preventive measures.