[Characteristics of equilibrium function and the sensory organization of postural balance in women 85-95 years old.].

The purpose of this work is to establish the age-related indicators' characteristics of the effectiveness of the balance function and the postural balance sensory organization in women 85-95 years old. We examined 68 women aged 85-95 years [mean age (M±SD) 89,3±3 years]. The first age group included 37 women whose calendar age ranged from 85 to 89 years (mean age 86,9±1,6 years). The second age group included 31 women of 90-95 years (mean age: 92,1±1,4). To assess the components of the postural balance, a computer-based dynamic posturographic complex «Smart Equitest Balance Manager» was used. The Sensory Organization Test (SOT) was performed. Comparative assessment of the Equilibrium Score indicators in all SOT functional tests, including the Composite of all equilibrium scores, did not reveal statistically significant differences between the examined groups of women. The sensory analysis did not reveal age-related changes in somatosensory, visual and vestibular information in the control over balance, either. At the same time, the indicator of sensory preference (Ratio for sensory analysis-patient Preference) was higher in women 90-95 years old (p=0,007). In women after 89 years of age, there are no age-related changes in the sensory organization of postural control or the effectiveness of maintaining static and static-dynamic balance. No decrease in overall balance performance, as well as the adaptive capabilities of their balance function, was noticed. At the same time, long-lived women retain the effectiveness of the sensory integration process to maintain postural balance and a sense of spatial orientation, which can be considered a predictor of active longevity. In addition, centenarians retain the ability of spatial and temporal organization of postural equilibrium control, as well as the degree and order of the muscles involved to reduce the imbalance recruitment. The results obtained made it possible to designate SOT parameters that can be taken into account when predicting postural changes and life expectancy in women in old age.