Background: Individuals with vision loss are at an increased risk of falls. Understanding what factors contribute to postural instability within this
population is a necessary step towards the development of Training programs and rehabilitation targeted at reduction of falls within this population. The aim of this study was to Assessment of balance recovery During manipulation of Somatosensory, vision and Vestibular system in healthy and blind persons.
Methods: Thirty healthy and blind subjects were selected as samples. Balance recovery strategies in various situations were recorded by six high-speed cameras after sudden movement of the treadmill. Independent T-test test was used for data analysis (P≤0/05).
Results: The results of this study showed that the mean of hip and ankle swings in different conditions was significantly higher in the blind group than healthy group, both in the anterior-posterior and posterior-anterior disturbances. There was also a significant difference between the ratio of hip-to-wrist (the dominant strategy for balance recovery) in all situations (p <0.05).
Conclusion: The findings of this study showed that both healthy and blind groups showed different mechanisms and responses for balance recovery after anterior-posterior and posterior-anterior perturbations. Also the results showed that blind individuals utilize greater use of hip strategy to maintain postural stability and prefer to rely on Somatosensory information to restore balance as the dominant sensory system.