Effect of foot orthoses on frequency and amplitude of ground reaction forces in older adults during walking

Valizadeorang, Aydin Effect of foot orthoses on frequency and amplitude of ground reaction forces in older adults during walking. University of Mohaghegh Ardabili.

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Abstract

Background & Purpose: With aging, the pattern of walking is altered and the person's ability to walk decrease. Also, with the onset of the aging process, the postural control system become unstable. A small biomechanical change in the leg, as the lower limb and affecting balance, is effective on postural control. The use of textured foot orthoses leads to rehabilitation of injuries, improved efficiency and increased comfort. The purpose of this study was to investigate the effect of textured foot orthoses on ground reaction force components and frequency spectrom of ground ground reaction forces in the older adults during walking. Methodology: 21 older adults (age 66.65 ± 6.62 years, height 165.15 ± 9.41 cm, weight 79.15 ± 15.24 kg) were volunteered to participate in this study. Ground reaction force data was recorded by the Beretc force plates (Beretc CorporationColumbus, OH). ANOVA test with repeated measures was used for statistical analysis. All analyzes were performed at the significance level of 0.05. Results: The results showed that the amount of anterior-posterior force in the heel contact phase in conditions with a small insufficiency was reduced compared to unaffected conditions and the amount of this force in this phase in the large inferior to the conditions without foot orthoses tended to decrease significantly. The time to peak vertical force during the heel contact phase was decreased in the large inferior to submerged conditions and tended to increase during the push off phase in the large undercoat. In addition, the loading rate under conditions with a large texture tended to increase significantly without contamination. The comfort level during wearing of large texture insole condition significantly increased compared to other conditions. Conclusion: According to the results of the foot orthoses study on the frequency spectrum and components of ground reaction forces, it can be pointed out that although these orthoses are ineffective on muscle tone, they change the amount of slip and instability. Therefore, it can be considered as an effective factor on equilibrium. Using the orthoses used in the present study may be useful for improving one's comfort during walking.

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