Analysis of the spatial-temporal and angular variables of gait of blind individuals
DOI:
https://doi.org/10.5935/0104-7795.20170025Keywords:
Visually Impaired Persons, Biomechanical Phenomena, GaitAbstract
Analyze and describe the spatial-temporal and angular variables of gait of total blind individuals. Method: The present study included 19 individuals with a mean age of 28±6 years, who were divided into two groups, the first composed of eight blinded individuals, and the second group of 11 individuals with normal vision. The variables were collected by the Peak Motus system and were analyzed with the Ariel Performance Analysis System Software. The subjects walked at a self-selected speed on a seven-meter long, obstacle-free route, until reaching six valid strides. For statistical analysis, the Student t test was applied, with significance level of p≤0.05. Results: The blind individuals showed a significant reduction of gait velocity, cadence, stride length, swing phase and maximum angle of knee flexion, as well as increased support phase and double-support period, compared to the subjects with normal vision. No significant difference was found for maximum hip extension angle between the groups. Conclusion: The findings of this study showed that the absence of visual information associated with postural and balance changes induce the blind subjects to have slower gait, with reduced stride length, angle of knee flexion and swing phase, and increased support phase and period of double-support, when compared to subjects with normal vision.
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